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  • Forschungsdaten  (1.311)
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  • 1
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    40Ar/39Ar Radiometric Dating of Quaternary Basaltic Volcanism at the Kula Volcanic Province, Western Türkiye (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-04-09
    Beschreibung: Abstract
    Beschreibung: During this research at the 40Ar-39Ar Geochronology Laboratory, CNR, Pisa, Italy, the analysis focused on 40Ar- 39Ar radiometric dating to investigate three distinct periods of volcanism from the Kula Volcanic Province in western Türkiye. This area is a monogenetic volcanic field (MVF) and exhibits three eruptive periods in the Quaternary Period. The three periods of volcanism are named the Burgaz (first stage), the Elikcitepe (second stage), and the DivilitTepe (third stage). This type of volcanism is poorly understood due to their small eruption size and limited material, lack of suitable datable material, and short eruption duration, with geological histories often poorly constrained. The data publication includes data of four samples from the three different eruptive phases that were analysed, including one from the first stage, one from the second stage, and two from the third stage. The samples were successfully dated and gave ages as the Early Pleistocene (first stage), the Middle Pleistocene (second stage) and the Holocene (third stage). The data from this work will be used as part of a PhD thesis. The ages will be integrated into a more detailed geochemical analysis and facilitate a detailed examination of the temporal and spatial relationships for the evolution of the volcano, and insights into the mechanisms driving volcanic activity in the region. Data was acquired by an ARGUS VI multi-collector noble gas mass spectrometer, using the step-heating process for all samples. Between 9.9 and 11.1 mg of groundmass material was analysed.
    Schlagwort(e): Monogenetic Volcanism ; Monogenetic Volcanic Field ; Western Turkey ; EPOS ; multi-scale laboratories ; geochemistry and microscopy ; geochemistry data ; EARTH SCIENCE ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 VOLCANIC ACTIVITY ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 VOLCANIC ACTIVITY 〉 ERUPTION DYNAMICS ; lava flow ; magmatic process ; tectonic setting 〉 intraplate tectonic setting ; tectonic uplift ; volcanic features ; volcano
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 2
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    Anthropogenic Disturbances Superimpose Climate Effects on Soil Organic Carbon in Savanna Woodlands of sub-Saharan Africa: R-codes (2025)
    TRR228 Database (TRR228DB)
    Details
    Publikationsdatum: 2025-01-06
    Beschreibung: Abstract
    Beschreibung: R-Script for Savanna ecosystems in sub-Saharan Africa (SSA) harbor substantial yet relatively unexplored reserves of soil organic carbon (SOC). Our study unravels for the first time the interplay between climate, reference soil groups (RSGs), and anthropogenic disturbances in shaping SOC dynamics in these ecosystems. We analyzed SOC along climosequences in natural woodlands in Mozambique and Zambia, with mean annual temperature (MAT; 20-24°C) and precipitation (MAP; 365-1227 mm). Anthropogenic disturbances were assessed through comprehensive field surveys and remote sensing of vegetation and indices changes. MAT and evapotranspiration (PET) had no discernible effect on SOC. Bulk SOC, particulate organic matter (POM), and mineral-associated organic matter (MAOM) stocks in the topsoil (0-10 cm) increased with MAP, though this relationship was not significant for subsoil. MAP explained only 35% of topsoil SOC variability, limited by anthropogenic disturbances, which raised SOC stocks in the dry savanna but resulted in SOC losses at 〉 600 mm MAP, and extended into subsoil. For sites with little disturbance, in the past decades, there were RSG-specific effects of MAP on SOC, explaining up to 85% of data variability. In disturbed sites, human presence altered the C balance to an extent that, as a rough estimate, could account for up to 2.6 Gt CO2-C loss over 20 years in wetter sites, with another 2.4 Gt CO2-C at risk as populations spread into these otherwise pristine environments. Accurate modelling of climate-change effects on the C cycle must, therefore, include the transformative impacts of current human activities, such as wood harvesting and grazing
    Schlagwort(e): Ecology ; Environment ; Soil Organic Carbon
    Materialart: Workflow , R-Markdown
    Format: PDF
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 3
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    Data: Anthropogenic Disturbances Superimpose Climate Effects on Soil Organic Carbon in Savanna Woodlands of sub-Saharan Africa (2025)
    TRR228 Database (TRR228DB)
    Details
    Publikationsdatum: 2025-01-06
    Beschreibung: Abstract
    Beschreibung: Data for Manuscript: Savanna ecosystems in sub-Saharan Africa (SSA) harbor substantial yet relatively unexplored reserves of soil organic carbon (SOC). Our study unravels for the first time the interplay between climate, reference soil groups (RSGs), and anthropogenic disturbances in shaping SOC dynamics in these ecosystems. We analyzed SOC along climosequences in natural woodlands in Mozambique and Zambia, with mean annual temperature (MAT; 20-24°C) and precipitation (MAP; 365-1227 mm). Anthropogenic disturbances were assessed through comprehensive field surveys and remote sensing of vegetation and indices changes. MAT and evapotranspiration (PET) had no discernible effect on SOC. Bulk SOC, particulate organic matter (POM), and mineral-associated organic matter (MAOM) stocks in the topsoil (0-10 cm) increased with MAP, though this relationship was not significant for subsoil. MAP explained only 35% of topsoil SOC variability, limited by anthropogenic disturbances, which raised SOC stocks in the dry savanna but resulted in SOC losses at 〉 600 mm MAP, and extended into subsoil. For sites with little disturbance, in the past decades, there were RSG-specific effects of MAP on SOC, explaining up to 85% of data variability. In disturbed sites, human presence altered the C balance to an extent that, as a rough estimate, could account for up to 2.6 Gt CO2-C loss over 20 years in wetter sites, with another 2.4 Gt CO2-C at risk as populations spread into these otherwise pristine environments. Accurate modelling of climate-change effects on the C cycle must, therefore, include the transformative impacts of current human activities, such as wood harvesting and grazing
    Schlagwort(e): Ecology ; Environment ; Soil Organic Carbon
    Materialart: Dataset , Data (SOC, soil properties) fo
    Format: MS Excel
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 4
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    40Ar/39Ar age, whole rock and mineral composition of Cenomanian Serra do Cuó basalts on the Brazilian equatorial margin (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-01-21
    Beschreibung: Abstract
    Beschreibung: This dataset comprises new chemical, isotopic and geochronological analyses for 3 samples from the Cenomanian Serra do Cuó olivine basalts from northeast Brazil. Whole rock major, trace element and Sr-Nd-Pb isotope compositions as well as mineral oxide compositions for pyroxenes, plagioclase, olivine, and Fe-Ti oxides. New analyses on 3 samples are presented in the bulk and in-situ data templates developed by EarthChem. A compilation of all new analyses and previous whole-rock data from Sial (1978) are also provided. Analyses were carried out at the Geoanalítica Core Facility, Isotope Geology Research Center and Geochronological Research Center (CPGeo) at the Instituto de Geociências, University of São Paulo, Brazil. This dataset is supplementary to: Macêdo Filho, A. A., Oliveira, A. L., Klöcking, M., Janasi, V. A., Archanjo, C. J., & Lino, L. M. (2025). Petrology of Cenomanian basalts on the Brazilian equatorial margin: Implications for the tectonomagmatic evolution of the drift phase. Geochemistry, 126248. https://doi.org/10.1016/j.chemer.2025.126248. The data publication includes the following Excel Tables: (1) 2025-002_MacedoFilho_BulkSample_Analyses (DIGIS/EarthChem Template, EarthChem Team, 2022a): Whole rock major, trace element and Sr-Nd-Pb isotope compositions and 40Ar/39Ar age; with additional information on sample collection and analytical methods. (2) 2025-002_MacedoFilho_InSitu_Analyses (DIGIS /EarthChem Template, EarthChem Team, 2022b): Mineral oxide compositions for pyroxene, plagioclase, olivine, and Fe-Ti oxides; with additional information on sample collection and analytical methods. (3) 2025-002_MacedoFilho_suppl-compiled: supplementary data tables from Macêdo Filho et al. (2025). Excel file with the six spreadsheets: Table A1. whole-rock chemistry; Table A2. Feldspar chemistry; Table A3. Pyroxene chemistry; Table A4. Olivine chemistry; Table A5. Titanomagnetite chemistry; Table A6. Ar-Ar Geochronology. Table A1 compiles analyses from Sial (1978) as well as new data. Reference: Sial, A. N. (1978). Major and trace chemistry of the Tertiary basaltic suite of Rio Grande do Norte and Paraíba, northeast Brazil. Jornal de Mineralogia, 7, 119-128.
    Beschreibung: Other
    Beschreibung: The DIGIS geochemical data repository is a research data repository in the Earth Sciences domain with a specific focus on geochemical data. The repository archives, publishes and makes accessible user-contributed, peer-reviewed research data in standardised form (EarthChem Team, 2022, https://doi.org/10.26022/IEDA/112263) that fall within the scope of the GEOROC database (https://georoc.eu). All submissions of new data will be considered for inclusion in the GEOROC database. It is hosted at GFZ Data Services through a collaboration between the Digital Geochemical Data Infrastructure (DIGIS) for GEOROC 2.0 (https://digis.geo.uni-goettingen.de) and the GFZ German Research Centre for Geosciences.
    Schlagwort(e): basalt ; major elements ; trace elements ; Sr-Nd-Pb isotopes ; ICP-MS ; TIMS ; 40Ar/39Ar age ; plagioclase ; pyroxene ; olivine ; Fe-Ti oxide ; EMP ; EARTH SCIENCE 〉 SOLID EARTH ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 VOLCANO ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 VOLCANIC ACTIVITY 〉 ERUPTION DYNAMICS 〉 LAVA COMPOSITION/TEXTURE ; Phanerozoic 〉 Mesozoic 〉 Cretaceous 〉 Late/Upper Cretaceous 〉 Cenomanian
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 5
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    Darss Sill shallow water OBS Test (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-01-27
    Beschreibung: Abstract
    Beschreibung: For broadband ocean bottom seismometer (OBS) data, external noise is typically more pronounced than on seismometers installed onshore. However, the sources of this external noise are only partly understood. In particular, the impact the instrument design (form-factor of the floatation, pressure vessel, hight-to-width ratio) has on the amplitude of external noise is not fully understood. As a developer of OBS systems, K.U.M. Kiel GmbH has deployed two different types of OBS systems side-by-side for a period of 77 days. Both instruments included the same seismic sensor, a Nanometrics Trillium Compact 120 OBS. Station LOBS was a K.U.M. LOBSTER-type instrument carrier (https://jlsrf.org/index.php/lsf/article/view/165) which is the main instrument type in the DEPAS pool “German instrument pool for amphibian seismology”(https://www.awi.de/en/science/geosciences/geophysics/methods-and-tools/ocean-bottom-seismometer/depas.html). Station NEUA was a more recently developed system of the K.U.M. NAMMU-Type instrument, that has a completely different design (https://www.kum-kiel.de/products/nammu.html), with a single flotation, a single pressure tube containing the seismometer, datalogger and batteries. The side-by-side deployment of the different instruments allows a direct comparison and the availability of the oceanographic and meteorological data from the nearby metocean station DARSS-SILL (https://www.io-warnemuende.de/marnet-darss-sill.html) allows a detailed investigations of the instrument-design-related noise sources at OBS stations. Waveform data is available from the GEOFON data centre, under network code 1Q.
    Schlagwort(e): EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 OCEANS 〉 MARINE GEOPHYSICS ; Instruments 〉 In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; Instruments 〉 In Situ/Laboratory Instruments 〉 Profilers/Sounders 〉 Acoustic Sounders 〉 HYDROPHONES ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS ; Geophysics ; Passive seismic ; Hydrophones ; MiniSEED ; OBS ; Temporary ; Local Network
    Materialart: Dataset , Seismic Network
    Format: 49GB
    Format: .mseed
    Format: XML
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 6
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    Results of measurements of carbonate dissolution rates under various well-controlled conditions for reactive CO2-water flow in a large lab-scale karst fracture imitate (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-01-22
    Beschreibung: Abstract
    Beschreibung: The data presented here, are the result of a study that explores carbonate dissolution dynamics in karstic systems by simulating reactive water flow under controlled large scale laboratory conditions. The work is conducted within the DFG-funded project NERO and focuses on the interaction of CO2-loaded water with carbonate rocks along a fracture imitate. The large-scale experiments with a 1 m² limestone tile aim to provide realistic data of carbonate dissolution efficiency with well-defined boundary conditions. The experimental conditions were varied in terms of dissolved CO2 concentration in water, fluid flow velocities and fracture aperture. The results serve as a base for numerical modelling approaches and help to bridge the gap between field scale phenomena and laboratory studies. The findings have implications for karst hydrology, geochemical modeling related subsurface processes, supporting advancements in predictive capabilities for natural and engineered systems.
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 7
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    Results of serpentinization and associated natural H2 potential analysis in rift-inversion orogen systems using a numerical geodynamic modelling approach (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-01-28
    Beschreibung: Abstract
    Beschreibung: This data set includes videos depicting the evolution of nine numerical tectonic models simulating rift-inversion orogens. For these models we apply the 2D thermo-mechanical geodynamic code ASPECT, coupled with FastScape for the inclusion of surface processes. Using the results from these models, we examine mantle serpentinization in rift-inversion orogens, and their associated natural hydrogen gas (H2) potential. Detailed descriptions of the model set-up and results can be found in Zwaan et al. (2025) in Science Advances.
    Schlagwort(e): Natural H2 ; Geodynamic modelling ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 ECONOMIC RESOURCES 〉 ENERGY PRODUCTION/USE ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 ECONOMIC RESOURCES 〉 ENERGY PRODUCTION/USE 〉 HYDROGEN PRODUCTION/USE ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES 〉 ISOSTATIC UPLIFT ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES 〉 OROGENIC MOVEMENT ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES 〉 RIFTING ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES 〉 SUBDUCTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES 〉 TECTONIC UPLIFT ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 CRUSTAL MOTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 FAULT MOVEMENT ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 LITHOSPHERIC PLATE MOTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRAIN
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 8
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    Catalog of Start and End Times of Tremor-Like Episodes Near the Epicenter of the 2023 Mw 7.8 Türkiye Earthquake (12 August 2022 – 6 February 2023) (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-01
    Beschreibung: Abstract
    Beschreibung: This dataset accompanies our study on tremor-like episodes that we discovered in the low-frequency seismic signals preceding the 2023 Mw 7.8 Kahramanmaraş earthquake in Türkiye. Between 12 August 2022 and 6 February 2023, eight months before the mainshock, we identified tremor-like episodes recorded at five seismic stations (NAR, KHMR, MGND, GAZ, and GZT) within a 46 km radius of the mainshock epicenter. Using seismic data from the NAR station (the closest to the mainshock) bandpass-filtered between 1.7 and 2.2 Hz, we identified the start and end times of 3741 tremor-like episodes, resulting in a catalog of 7482 markers. This catalog forms the foundation of the statistical analyses presented in Zali et al. (2025). Additionally, we manually picked the first arrival times of 162 selected pulses recorded between 24 and 31 December 2022 from these episodes across the five stations. Our analysis suggests that these tremor-like episodes originate from an anthropogenic source, likely associated with activities of cement plants located on the Narlı Fault, which hosted the earthquake epicenter. This data publication provides the catalog of start and end times for 3741 tremor-like episodes at the NAR station and the first arrival times of 162 selected pulses recorded at the five stations.
    Schlagwort(e): Türkiye Earthquake ; Low-frequency Signals ; Anthropogenic Hazard ; Kahramanmaraş Earthquake ; Narlı Fault ; Seismology ; EARTH SCIENCE ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 NATURAL HAZARDS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 EARTHQUAKE MAGNITUDE/INTENSITY ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 EARTHQUAKE OCCURRENCES
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 9
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    GFZ GNSS-derived tropospheric data products (ultra-rapid) (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-01
    Beschreibung: Abstract
    Beschreibung: The GFZ Helmholtz Centre for Geosciences (GFZ) acts as an operational analysis center of the EUMETNET EIG GNSS water vapour programme (E-GVAP, https://egvap.dmi.dk/). GFZ provides all types of tropospheric products in near-real time in three processing lines: ultra-rapid (E-GVAP solution ID is GF1U), rapid (GF1R), and global (GF1G). The ultra-rapid solution series is published hourly with a delay of around 15 minutes after the end of each hour. Operational tropospheric products of GFZ included in this data publication are: (1) Zenith Total Delays (ZTD), Integrated Water Vapor (IWV); (2) Tropospheric gradients in North and East directions; (3) Slant Total Delays (STD)
    Beschreibung: Methods
    Beschreibung: Based on a network of around 600 GNSS stations of the global tracking network of the International GNSS Service and the Satellitenpositionierungsdienst der deutschen Landesvermessung (SAPOS, Satellite Positioning Service of German state surveying agencies, http://www.sapos.de/), the GFZ Analysis Center generates hourly solutions using the latest development version of the EPOS.P8 Software. The solution series contains: (A) Zenith Total Delays (ZTD), Integrated Water Vapor (IWV), tropospheric gradients Folder sinex_trop_ULTRA_RAPID_EPOS8 with subfolders for GPS weeks (e.g., w2348): daily files for each processed GNSS site. Files: IIIIWWWWD.tro: files with Zenith Total Delays, Integrated Water Vapor, tropospheric Gradients; IIIIWWWWD.zpd: files with Zenith Total Delays and tropospheric gradients; where IIII - GNSS site name, WWWW - GPS week, D - day of the week; Data format: SINEX_TRO: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5030246 (B) Zenith Total Delays (ZTD) Folder product_COST_ULTRA_RAPID_EPOS8/ with subfolders for each year (e.g., y2024) and month (e.g., m12): daily files with ZTDs for all processed GNSS sites in one file. File naming convention: cost_h_o_YYYYMMDDhh:mm_YYYYMMDDhh:mm_mult_gf1u.dat; cost = total zenith delay in COST format h = hourly files o = operational product YYYYMMDDhh:mm = begin-date-time_end-date-time (year month day hour minute) mult = multi GNSS constellation gf1u = GFZ ultra-rapid product version 1 (example file: cost_h_o_202501290900_202501290959_mult_gf1u.dat) Data format is COST716 ascii format for ground based GNSS data, developed by E-GVAP: https://rom-saf.eumetsat.int/egvap_cost.pdf (C) Slant Total Delays (STD) Folder slants_ULTRA_RAPID_EPOS8, subfolders for each year: daily files with Slant Total Delays for all processd GNSS sites in ASCII format: file naming convention: slant_h_o_YYYYMMDDhh:mm_YYYYMMDDhh:mm_mult_gf1u.dat with slant = slant total delay product h = hourly files o = operational product YYYYMMDDhh:mm = begin-date-time_end-date-time (year month day hour minute) mult = multi GNSS constellation gf1u = GFZ ultra-rapid product version 1 (example fie: slant_h_o_202501291400_202501291459_mult_gf1u.dat.gz) The processing is done with GFZ EPOS.P8 Software. It follows the current geodetic conventions (https://www.iers.org/SharedDocs/Publikationen/EN/IERS/Publications/tn/TechnNote36/tn36.pdf) and GFZ IGS Analysis Center Notes (https://files.igs.org/pub/center/analysis/gfz.acn). The processing strategy is described in https://www.gruan.org/documentation/gruan/td/gruan-td-6
    Schlagwort(e): GNSS Tropospheric Products ; Atmospheric Water Vapor ; Tropospheric gradients ; Slant Total Delays ; GNSS Meteorology ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Positioning/Navigation 〉 GNSS ; EARTH SCIENCE 〉 ATMOSPHERE 〉 ATMOSPHERIC WATER VAPOR 〉 WATER VAPOR
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 10
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    GFZ GNSS-derived tropospheric data products (rapid) (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-01
    Beschreibung: Abstract
    Beschreibung: The GFZ Helmholtz Centre for Geosciences (GFZ) acts as an operational analysis center of the EUMETNET EIG GNSS water vapour programme (E-GVAP, https://egvap.dmi.dk/). GFZ provides all types of tropospheric products in near-real time in three processing lines: ultra-rapid (E-GVAP solution ID is GF1U), rapid (GF1R), and global (GF1G). The rapid solution series is published hourly with a delay of around 25 minutes after the end of each hour. Operational tropospheric products of GFZ included in this data publication are: (1) Zenith Total Delays (ZTD), Integrated Water Vapor (IWV); (2) Tropospheric gradients in North and East directions; (3) Slant Total Delays (STD)
    Beschreibung: Methods
    Beschreibung: Based on a network of around 600 GNSS stations of the global tracking network of the International GNSS Service and the Satellitenpositionierungsdienst der deutschen Landesvermessung (SAPOS, Satellite Positioning Service of German state surveying agencies, http://www.sapos.de/), the GFZ Analysis Center generates hourly solutions using the latest development version of the EPOS.P8 Software. The solution series contains: (A) Zenith Total Delays (ZTD), Integrated Water Vapor (IWV), tropospheric gradients Folder sinex_trop_RAPID_EPOS8 with subfolders for GPS weeks (e.g., w2348): daily files for each processed GNSS site. Files: IIIIWWWWD.tro: files with Zenith Total Delays, Integrated Water Vapor, tropospheric gradients; IIIIWWWWD.zpd: files with Zenith Total Delays and tropospheric gradients; where: IIII - GNSS site name, WWWW - GPS week, D - day of the week; Data format: SINEX_TRO: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5030246 (B) Zenith Total Delays (ZTD) Folder product_COST_RAPID_EPOS8/ with subfolders for each year (e.g., y2024) and month (e.g., m12): daily files with ZTDs for all processed GNSS sites in one file. File naming convention: cost_h_o_YYYYMMDDhh:mm_YYYYMMDDhh:mm_mult_gf1r.dat; Where: cost = total zenith delay in COST format h = hourly files o = operational product YYYYMMDDhh:mm = begin-date-time_end-date-time (year month day hour minute) mult = multi GNSS constellation gf1r = GFZ rapid product version 1 (example file: cost_h_o_202501290900_202501290959_mult_gf1r.dat) Data format is COST716 ascii format for ground based GNSS data, developed by E-GVAP: https://rom-saf.eumetsat.int/egvap_cost.pdf (C) Slant Total Delays (STD) Folder slants_RAPID_EPOS8, subfolders for each year: daily files with Slant Total Delays for all processd GNSS sites in ASCII format: File naming convention: slant_h_o_YYYYMMDDhh:mm_YYYYMMDDhh:mm_mult_gf1r.dat Where: slant = slant total delay product h = hourly files o = operational product YYYYMMDDhh:mm = begin-date-time_end-date-time (year month day hour minute) mult = multi GNSS constellation gf1r = GFZ rapid product version 1 (example fie: slant_h_o_202501291400_202501291459_mult_gf1r.dat.gz) The processing is done with GFZ EPOS.P8 Software. It follows the current geodetic conventions (https://iers-conventions.obspm.fr/content/tn36.pdf) and GFZ IGS Analysis Center Notes (https://files.igs.org/pub/center/analysis/gfz.acn). The processing strategy is described in https://www.gruan.org/documentation/gruan/td/gruan-td-6
    Schlagwort(e): GNSS Tropospheric Products ; Atmospheric Water Vapor ; Tropospheric gradients ; Slant Total Delays ; GNSS Meteorology ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Positioning/Navigation 〉 GNSS ; EARTH SCIENCE 〉 ATMOSPHERE 〉 ATMOSPHERIC WATER VAPOR 〉 WATER VAPOR
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 11
    facet.materialart.
    Unbekannt
    GFZ GNSS-derived tropospheric data products (global) (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-01
    Beschreibung: Abstract
    Beschreibung: The GFZ Helmholtz Centre for Geosciences (GFZ) acts as an operational analysis center of the EUMETNET EIG GNSS water vapour programme (E-GVAP, https://egvap.dmi.dk/). GFZ provides all types of tropospheric products in near-real time in three processing lines: ultra-rapid (E-GVAP solution ID is GF1U), rapid (GF1R), and global (GF1G). The global solution series is published hourly with a delay of around 50 minutes after the end of each hour. Operational tropospheric products of GFZ included in this data publication are: (1) Zenith Total Delays (ZTD), Integrated Water Vapor (IWV); (2) Tropospheric gradients in North and East directions; (3) Slant Total Delays (STD)
    Beschreibung: Methods
    Beschreibung: Based on a network of around 600 GNSS stations of the global tracking network of the International GNSS Service and the Satellitenpositionierungsdienst der deutschen Landesvermessung (SAPOS, Satellite Positioning Service of German state surveying agencies, http://www.sapos.de/), the GFZ Analysis Center generates hourly solutions using the latest development version of the EPOS.P8 Software. The solution series contains: (A) Zenith Total Delays (ZTD), Integrated Water Vapor (IWV), tropospheric gradients Folder sinex_trop_GLOBAL_EPOS8 with subfolders for GPS weeks (e.g., w2348): daily files for each processed GNSS site. Files: IIIIWWWWD.tro: files with Zenith Total Delays, Integrated Water Vapor, tropospheric gradients; IIIIWWWWD.zpd: files with Zenith Total Delays and tropospheric gradients; where: IIII - GNSS site name, WWWW - GPS week, D - day of the week; Data format: SINEX_TRO: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5030246 (B) Zenith Total Delays (ZTD) Folder product_COST_GLOBAL_EPOS8/ with subfolders for each year (e.g., y2024) and month (e.g., m12): daily files with ZTDs for all processed GNSS sites in one file. File naming convention: cost_h_o_YYYYMMDDhh:mm_YYYYMMDDhh:mm_mult_gf1g.dat; cost = total zenith delay in COST format h = hourly files o = operational product YYYYMMDDhh:mm = begin-date-time_end-date-time (year month day hour minute) mult = multi GNSS constellation gf1g = GFZ global product version 1 (example file: cost_h_o_202501290900_202501290959_mult_gf1g.dat) Data format is COST716 ascii format for ground based GNSS data, developed by E-GVAP: https://rom-saf.eumetsat.int/egvap_cost.pdf (C) Slant Total Delays (STD) Folder slants_GLOBAL_EPOS8, subfolders for each year: daily files with Slant Total Delays for all processd GNSS sites in ASCII format: File naming convention: slant_h_o_YYYYMMDDhh:mm_YYYYMMDDhh:mm_mult_gf1g.dat with slant = slant total delay product h = hourly files o = operational product YYYYMMDDhh:mm = begin-date-time_end-date-time (year month day hour minute) mult = multi GNSS constellation gf1g = GFZ global product version 1 (example fie: slant_h_o_202501291400_202501291459_mult_gf1g.dat.gz) The processing is done with GFZ EPOS.P8 Software. It follows the current geodetic conventions (https://www.iers.org/SharedDocs/Publikationen/EN/IERS/Publications/tn/TechnNote36/tn36.pdf) and GFZ IGS Analysis Center Notes (https://files.igs.org/pub/center/analysis/gfz.acn). The processing strategy is described in https://www.gruan.org/documentation/gruan/td/gruan-td-6
    Schlagwort(e): GNSS Tropospheric Products ; Atmospheric Water Vapor ; Tropospheric gradients ; Slant Total Delays ; GNSS Meteorology ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Positioning/Navigation 〉 GNSS ; EARTH SCIENCE 〉 ATMOSPHERE 〉 ATMOSPHERIC WATER VAPOR 〉 WATER VAPOR
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 12
    facet.materialart.
    Unbekannt
    GFZ GNSS-derived precipitable water vapor for climate reference network GRUAN (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-01
    Beschreibung: Abstract
    Beschreibung: The Global Climate Observing System (GCOS) Reference Upper Air Network (GRUAN, https://www.gruan.org/ ) of the World Meteorological Organization (WMO) is an international observing network, designed to meet climate requirements. Upper air observations within the GRUAN network will provide long-term high-quality climate records. A GNSS receiver is part of the GRUAN station equipment with highest priority for measuring of atmospheric water vapor. GRUAN observations are intended to provide long-term high-quality data for the reliable determination of climatological trends and to provide further insight into atmospheric processes. Precise GNSS data analysis is a key to reach data quality on the highest level. Due to its long-term experience in GNSS data processing, GFZ was selected as a Central GRUAN GNSS Data Processing Centre. This data publicatoion includes the GRUAN Data Product (GDP) of GFZ: GNSS Precipitable Water (PW).
    Beschreibung: Methods
    Beschreibung: GFZ GRUAN Processing Centre generates Precipitable Water (PW) products for GNSS sites of the GRUAN network using the latest development version of the EPOS.P8 Software. The solution series contains: Precipitable Water (PW), converted from the Zenith Total Delays (ZTD) Folder sinex_trop_GRUAN_EPOS8 with subfolders for GPS weeks (e.g., w2348): daily files for each processed GNSS site. Files: IIIIWWWWD.tro: files with Zenith Total Delays, Precipitable Water (also called Integrated Water Vapor), tropospheric gradients; IIIIWWWWD.zpd: files with Zenith Total Delays and tropospheric gradients; where IIII - GNSS site name, WWWW - GPS week, D - day of the week; Data format: SINEX_TRO: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5030246 The processing with EPOS.P8 is described in detail in https://www.gruan.org/documentation/gruan/td/gruan-td-6
    Schlagwort(e): Precipitable Water ; Integrated Water Vapor ; Atmospheric Water Vapor ; Climate ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Positioning/Navigation 〉 GNSS ; EARTH SCIENCE 〉 ATMOSPHERE 〉 ATMOSPHERIC WATER VAPOR 〉 WATER VAPOR
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 13
    facet.materialart.
    Unbekannt
    Responses to the ICGEM User Community Survey: Analysis and Future Plans with the SAMDAT Project (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-03
    Beschreibung: Abstract
    Beschreibung: This data publication presents the anonymized original answers of the ICGEM user survey “Analysis and Future Plans with the SAMDAT Project”. In total, 112 respondents completed the survey. Data collection started on the 1st of September and ended on the 31st of October 2024. The survey was announced on the ICGEM website, and the questionnaire was integrated directly into the website. A separate page was developed explaining the survey purpose. Respondents were contacted via the ICGEM users mailing list, the geodesy mailing list, and LinkedIn. Responses were collected anonymously from the beginning. The objective of the survey is twofold: firstly, to ascertain the current user experience with the portal and, secondly, to identify potential areas for improvement of the service. The analysis identifies various user groups in order to find out how ICGEM can best serve the needs of a diverse range of geoscientific applications. It is crucial to comprehend user expectations, since ICGEM is dedicated to demand-driven development. Furthermore, the survey offers users the chance to indicate their priorities for planned features and extensions of the ICGEM platform within the SAMDAT project. The associated report (Torhov et al., 2025) presents the analyses of user feedback gathered from the global user community of the ICGEM Service (International Centre for Global Earth Models). ICGEM serves as a pivotal resource for gravity field modelling, serves as primary resource for global gravitational models and offers an array of interactive tools. Through the recently launched SAMDAT project, ICGEM continues to improve it service and web presentation. New gravity field functionals, datasets and improved metadata are planned to be introduced in alignment with community needs. This user survey was an important first step to collect feedback on the current and upcoming service portfolio of ICGEM. Survey data was collected through a questionnaire to assess scientific applications, uncover feature expectations, and identify opportunities for improvement. The results confirm ongoing project activities and set new directions such as in data representation, documentation and outreach.
    Schlagwort(e): ICGEM ; User survey ; Scientific community ; EARTH SCIENCE SERVICES 〉 WEB SERVICES 〉 INFORMATION MANAGEMENT SERVICES ; science 〉 informatics 〉 data acquisition
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 14
    facet.materialart.
    Unbekannt
    Survey for critical raw materials in Malawi East African Rift geothermal areas (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-04
    Beschreibung: Abstract
    Beschreibung: In autumn 2023, an expedition to Malawi was undertaken within the framework of the research project “CRM-geothermal”. Within „CRM-geothermal“ we are looking for an environmentally friendly co-production of critical raw materials together with the provision of geothermal energy. In the East African Rift System (EARS), high levels of rare earth elements (REE), Sr, Ba and Mg are expected in waters and solids in areas with alkaline volcanic rocks, while other critical elements, including helium, have been sought in other localities. In particular, the eastern branch is the most juvenile sector and has increased geothermal potential related to hot fluids migrating along permeable faults. Malawi was traversed along the eastern arm of the EARS from north to south to collect gas, water, rock and sediment samples associated with natural hot springs. On site, physical and chemical parameters were measured in-situ and documented together with the geology, infrastructure and domestic use of the hot site. Detailed measurements were carried out in different labs in Potsdam and Bremen.
    Schlagwort(e): critical raw materials ; geothermal fluids ; east african rift ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 ECONOMIC RESOURCES 〉 ENERGY PRODUCTION/USE 〉 GEOTHERMAL ENERGY PRODUCTION/USE ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 15
    facet.materialart.
    Unbekannt
    baytomo3d - 3D Transdimensional Reversible Jump McMC Tomography (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-07
    Beschreibung: Abstract
    Beschreibung: baytomo3d is an open source Python tool to perform an McMC transdimensional Bayesian inversion of body and/or surface waves. It is inverting for the 3D Vs and Vp subsurface structure in the crust and upper mantle. The algorithm expects a set of body-wave traveltime measurements between an earthquake and an array of seismic stations and/or surface phase traveltime measurements at different frequencies between pairs of seismic stations.There are example datasets and scripts provided with this software, so interested users can get familiar with the method and experiment with the available inversion options.
    Beschreibung: Other
    Beschreibung: The Priority Programme "Mountain Building Processes in Four Dimensions (4D-MB SPP), funded by the German Research Foundation (DFG) for six years (beginning in 2017). The 4D-MB SPP forms an integral part of the international AlpArray mission to image the structure of the Alps from their surface down to several hundred kilometers depth in the mantle. It tests the hypothesis that re-organizations of Earth’s mantle during the collision of tectonic plates have both immediate and long-lasting effects on crustal motion, fault kinematics, earthquake distribution and surface evolution. It challenges conventional wisdom by recognizing that linked processes between Earth’s surface and mantle beneath mountain belts can only be explained by integrating 3D imaging of the entire crust-mantle system with geologic observations and modeling to enable us to look both backwards and forwards in time, the 4th dimension. This requires a multi- and interdisciplinary approach that integrates geophysics, tectonics, petrology, geochronology, basin- and surface studies.
    Beschreibung: TechnicalInfo
    Beschreibung: GNU General Public License, Version 3, 29 June 2007 Copyright © 2025 Emanuel Kästle, Bundesanstalt für Materialprüfung, Berlin, Germany baytomo3d is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. baytomo3d is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see 〈http://www.gnu.org/licenses/〉.
    Schlagwort(e): Bayesian Tomography ; Markov chain Monte Carlo ; 3D seismic tomography ; 4DMB ; 4D Mountain Building ; EARTH SCIENCE SERVICES 〉 DATA ANALYSIS AND VISUALIZATION 〉 GEOPHYSICAL IMAGING 〉 PHASE VELOCITY MAPS ; EARTH SCIENCE SERVICES 〉 DATA ANALYSIS AND VISUALIZATION 〉 GEOPHYSICAL IMAGING 〉 SEISMIC WAVE TRAVEL TIME TOMOGRAPHY ; EARTH SCIENCE SERVICES 〉 DATA ANALYSIS AND VISUALIZATION 〉 GEOPHYSICAL IMAGING 〉 SLAB GEOMETRY ; EARTH SCIENCE SERVICES 〉 MODELS 〉 GEOLOGIC/TECTONIC/PALEOCLIMATE MODELS 〉 LITHOSPHERIC MODELS (Vs, ANISOTROPY,Vp) ; geophysics ; seismology
    Materialart: Software , Software
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 16
    facet.materialart.
    Unbekannt
    Geochemical and isotopic compositions of minerals and bulk rocks of the Chachimbiro Volcanic Complex (Northern Andes, Ecuador) (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-10
    Beschreibung: Abstract
    Beschreibung: This dataset provides geochemical data from from the Quaternary Chachimbiro Volcanic Complex (CVC), situated in the Western Cordillera of Ecuador, Northern Andes (0.468°N, 78.287°W). The CVC is subdivided into 4 eruptive stages (CH1, CH2, CH3, CH4) ranging in age between ~400 and ~4 ka ago (Bellver-Baca et al., 2020). The CH1 stage consists of andesitic flows erupted between 405.7 ± 20.0 and 298.6 ± 32.9 ka with collapse of the pre-existing cone at the end of the effusive period (File #1). The following CH2 stage (121.75 ± 23.2 -36.08 ± 2.8 ka) consists of andesitic to dacitic domes and pyroclastic rocks which also suffered a collapse event as shown by the scar and the uprooted domes in the hillside of the edifice (File #1). The CH3 unit (36.08 ± 0.28 – 22.73 ± 0.12 ka) consists of two main andesitic to dacitic domes (Hugá and Albují: H and A, respectively, in File #1) and effusive rocks. CH4 consists of a volumetrically small rhyodacitic pyroclastic unit which was produced by a lateral blast dated at 5.5-5.8 ky ago. A younger pyroclastic episode (〈4.15 ka ago) has been related to the Pucará dome (Comida, 2012), but rocks of this event have not been investigated in the present study. The bulk rock and mineral data are used to reconstruct the plumbing system beneath the CVC during its ~400 ka long lifetime. Since the temporal geochemical evolution of CVC bulk rocks towards higher values of adakite-like indices (e.g., Sr/Y, La/Yb) bears strong similarities to that of magmatic systems associated with supergiant porphyry copper deposits, these data may serve to better understand how adakite-like signatures are acquired in fertile arc magmatic systems with metallogenic implications. Files included are: •2024-018_Chiaradia-et-al_Table-1_Sample-overview: sample overview table with coordinates of and type of analyses carried out on each sample (Table #1) •2024-018_Chiaradia-et-al_File_1_map: a geological map with location of investigated samples (File #1) •2024-018_Chiaradia-et-al_File_2_WholeRocks: geochemical and radiogenic isotope data on bulk rocks (File #2). •2024-018_Chiaradia-et-al_File_3_Pyroxene: contains microprobe and LA-ICP-MS major and trace element analyses of clino- and orthopyroxenes from the CVC and P-T conditions retrieved from clinopyroxene compositions (File #3) •2024-018_Chiaradia-et-al_File_4_Amphibole: contains microprobe and LA-ICP-MS major and trace element analyses of amphiboles from the CVC and P-T-H2Omelt, fO2 conditions retrieved from amphibole compositions (File #4). •2024-018_Chiaradia-et-al_File_5_Plagioclase: contains microprobe and LA-ICP-MS major and trace element analyses of plagioclases from the CVC (File #5). •2024-018_Chiaradia-et-al_File_6_Equilibrium tests: reports the calculations to retrieve pressure and temperature data from clinopyroxene-melt equilibrium and clinopyroxene-only composition (File #6). •2024-018_Chiaradia-et-al_File_7_CPX_Thermo_Barometry: reports the calculations to obtain P-T conditions from clinopyroxene-orthopyroxene equilibria in the same thin section (File #7). •2024-018_Chiaradia-et-al_File_8_Cpx_Opx_Thermo_Barometry: reports the equilibrium tests between minerals (clinopyroxene, orthopyroxene, amphibole) and host rock compositions and the P-T values retrieved by clinopyroxene and amphibole analyses that passed the test (File #8). Associated RStudio Scripts are available as https://doi.org/10.5880/fidgeo.2025.010 (Chiarada, 2025).
    Schlagwort(e): Ecuador ; Chachimbiro ; plumbing system ; Quaternary ; thermo-barometry ; geochemistry ; amphibole ; pyroxene ; plagioclase ; volcano ; porphyry copper ; compound material 〉 igneous material 〉 igneous rock ; compound material 〉 igneous material 〉 intermediate composition igneous material 〉 intermediate composition igneous rock 〉 andesite ; compound material 〉 rock 〉 igneous rock 〉 fine grained igneous rock ; compound material 〉 rock 〉 igneous rock 〉 porphyry ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 17
    facet.materialart.
    Unbekannt
    RStudio codes used to model AFC and FC processes for rocks and minerals of the Chachimbiro Volcanic Complex (CVC) (Ecuador) (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-10
    Beschreibung: Abstract
    Beschreibung: Eight (8) RStudio codes written to model REE and Sr isotope compositions plus Y of bulk rocks and minerals from the four stages (CH1 to CH4) of the 400-6 ka old Chachmbiro Volcanic Complex (CVC) in the frontal arc of Northern Ecuador. RStudio Code REE_Modelling_WR_CH1 reports AFC modelling of REE compositions of the average composition of CH1 low SiO2 andesitic rocks from a basaltic parent RStudio Code REE_Modelling_WR_CH2_3 reports AFC modelling of REE compositions of the average composition of CH2-CH3 high SiO2 andesitic rocks from a CH1-type andesitic parent RStudio Code REE_Modelling_WR_CH4 reports AFC modelling of REE compositions of the average composition of CH4 rhyodacitic rocks from a CH1-type andesitic parent RStudio Code REE_Modelling_Cpx_CH1 reports FC modelling of REE compositions of the average composition of a melt in equilibrium with Cpx of CH1 rocks from a CH1-type andesitic parent RStudio Code REE_Modelling_AmphTr_A reports FC modelling of REE compositions of the average composition of a melt in equilibrium with AmphTr_A amphiboles of CVC rocks from a CH1-type andesitic parent RStudio Code REE_Modelling_AmphTr_B reports FC modelling of REE compositions of the average composition of a melt in equilibrium with AmphTr_B amphiboles of CVC rocks from a CH1-type andesitic parent RStudio Code REE_Modelling_AmphTr_C reports FC modelling of REE compositions of the average composition of a melt in equilibrium with AmphTr_C amphiboles of CVC rocks from a CH1-type andesitic parent RStudio Code Sriso_Y_Modelling_CVC reports AFC modelling of CVC rocks in the 87Sr/86Sr versus Y space. These Codes are related to the ms Chiaradia et al. "Progressive build-up of a trans-crustal system beneath an adakite-like volcanic complex (Chachimbiro, Ecuador): an example of an embryonic porphyry Cu system?" by Chiarada et al. (2025). The associated data is available under https://doi.org/10.5880/fidgeo.2024.018 (Chiarada, 2025)
    Beschreibung: TechnicalInfo
    Beschreibung: Copyright [2021] the aiuthor Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
    Schlagwort(e): assimilation and fractional crystallization ; Rare Earth Elements ; Sr isotopes ; arc magmatic rocks ; Amphibole ; Clinopyroxene ; Ecuador ; RStudio ; compound material 〉 igneous material 〉 igneous rock ; compound material 〉 igneous material 〉 intermediate composition igneous material 〉 intermediate composition igneous rock 〉 andesite ; compound material 〉 rock 〉 igneous rock 〉 fine grained igneous rock ; compound material 〉 rock 〉 igneous rock 〉 porphyry ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY
    Materialart: Software , Software
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 18
    facet.materialart.
    Unbekannt
    Mineralogical, geochemical, microbiological and thermodynamic data from a deep hydrothermally altered profile of a semi-arid environment (Chilean Coastal Cordillera) (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-10
    Beschreibung: Abstract
    Beschreibung: This data publication is supplementary to a study on microbial weathering of Fe-bearing minerals in the deep biosphere of a semi-arid environment (Chile). The dataset contains mineralogical, geochemical, microbiological and thermodynamic data of an 87 m deep drill core profile located in the Chilean Coastal Cordillera (Santa Gracia (SG)). The drilling campaign was conducted in March-April 2019 as part of the German Science Foundation (DFG) priority research program SPP 1803 “EarthShape: Earth Surface Shaping by Biota”. The project focused on how microorganisms contribute to mineral weathering and thus shape Earth´s surface. Aim of the drilling campaign was to recover the continuous weathering profile from surface to weathering front and to pinpoint as well as disentangle weathering processes at depth. For this purpose, extractable Fe pools, water-extractable organic carbon and nitrate, energy yields of Fe redox reactions, in situ microbial Fe(III) reduction, microbial Fe(III) reduction extent in microcosms, as well as community compositions of in situ and microcosms derived 16S rRNA gene amplicon sequence variants (ASVs) were determined.
    Schlagwort(e): Critical Zone ; deep weathering ; hydrothermal alteration ; semi-arid ; Fe-metabolising bacteria ; Fe(II) oxidation ; Fe(III) reduction ; sulfate reduction ; cryptic S cycle ; analysis 〉 biological analysis 〉 microbiological analysis ; biosphere 〉 ecology 〉 ecosystem type 〉 terrestrial ecosystem 〉 semi-arid land ecosystem ; compound material 〉 rock ; EARTH SCIENCE 〉 PALEOCLIMATE 〉 LAND RECORDS 〉 BOREHOLES ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROCESSES 〉 CHEMICAL WEATHERING ; science 〉 natural science 〉 life science 〉 biology 〉 microbiology ; science 〉 physical science 〉 thermodynamics
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 19
    facet.materialart.
    Unbekannt
    Eifel Large-N contribution of temporary stations by the Goethe University Frankfurt (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-13
    Beschreibung: Abstract
    Beschreibung: Temporary stations of the Goethe University Frankfurt as contribution to the virtual network _EIFELLNX. Waveform data is available from the GEOFON data centre, under network code 6X.
    Schlagwort(e): EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 VOLCANIC ACTIVITY ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS 〉 SEISMOLOGICAL STATIONS ; Geophysics ; Passive seismic ; Seismometers ; Velocity ; MiniSEED ; Temporary ; Volcano
    Materialart: Dataset , Seismic Network
    Format: 84GB
    Format: .mseed
    Format: XML
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 20
    facet.materialart.
    Unbekannt
    Collaborative Research Centre 228 B01: Invasive Futures. Household social and economic survey on aspirations, invasive futures, and gender: The social ecology of system shifts in savanna environments (Phase II-2023) (2025)
    TRR228 Database (TRR228DB)
    Details
    Publikationsdatum: 2025-02-18
    Beschreibung: Abstract
    Beschreibung: These datasets comprise information from 536 households in Baringo County, Kenya, collected through a tablet-based survey conducted between August and September 2023. The study revisited households surveyed in 2019 during the first wave of the project. The initial survey used a two-step sampling approach: village sampling across three wards (Marigat, Ilchamus, and Mochongoi) in Marigat sub-county, with 35 villages selected randomly using the probability proportional to size (PPS) method. Sampling was based on enumeration areas (villages) from the 2009 Kenya National Population and Housing Census, facilitated by the Kenya National Bureau of Statistics. In the second step, 14 to 17 households were randomly selected from each village using updated village-level household lists, totaling 530 households. The 2023 survey involved face-to-face interviews with household heads and/or their spouses using a structured questionnaire. Topics covered included socio-economic and institutional characteristics, assets, land use, aspirations, social networks, invasive species, shocks and coping strategies, and income and expenditure. Certain sections of the survey were administered to both the household head and their spouse (e.g., husband and wife). Additionally, a randomized controlled trial (RCT) was conducted as part of the study. The RCT featured a collective action video intervention as the primary treatment, with a real public goods game (PGG) experiment serving as one of the outcome measures. The RCT evaluates the effectiveness of a video-based social influence intervention, featuring role model villages, on enhancing cooperation. The data collection process was carried out by a team of 11 trained local enumerators. The datasets are available in both CSV and STATA (.dta) formats. Supporting documentation, including the questionnaire, a data dictionary, and a detailed codebook, is provided to facilitate data understanding and use.
    Schlagwort(e): Agriculture ; Economy ; Africa ; Agriculture ; Farm Household ; Quantitative Interview ; Future-making ; Invasive species ; Field Experiment ; Gender ; Social Ecological Transformation ; Decision Making ; CRC/TRR 228
    Materialart: Dataset , Contains .dta, .csv, and detai
    Format: ZIP
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 21
    facet.materialart.
    Unbekannt
    Subsurface Vp and Vs model of crust and upper mantle under the Alps (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-25
    Beschreibung: Abstract
    Beschreibung: The model contains the 3D structure of Vp and Vs in the crust and the mantle under the European Alps, as published in Kästle et al. (2025). It is the result of a direct inversion of surface-wave data, from ambient noise and earthquake records, and of teleseismic P and S wave data. A Bayesian tomography approach is used where we implement a reversible jump Markov chain Monte Carlo method to constrain the free parameters. This gives not only the mean Vp and Vs values, but also their uncertainties, as well as a distribution (histograms) of the sampled velocity parameters at each point of the model.
    Beschreibung: Other
    Beschreibung: The Priority Programme "Mountain Building Processes in Four Dimensions (4D-MB SPP), funded by the German Research Foundation (DFG) for six years (beginning in 2017). The 4D-MB SPP forms an integral part of the international AlpArray mission to image the structure of the Alps from their surface down to several hundred kilometers depth in the mantle. It tests the hypothesis that re-organizations of Earth’s mantle during the collision of tectonic plates have both immediate and long-lasting effects on crustal motion, fault kinematics, earthquake distribution and surface evolution. It challenges conventional wisdom by recognizing that linked processes between Earth’s surface and mantle beneath mountain belts can only be explained by integrating 3D imaging of the entire crust-mantle system with geologic observations and modeling to enable us to look both backwards and forwards in time, the 4th dimension. This requires a multi- and interdisciplinary approach that integrates geophysics, tectonics, petrology, geochronology, basin- and surface studies.
    Schlagwort(e): EARTH SCIENCE SERVICES 〉 MODELS 〉 GEOLOGIC/TECTONIC/PALEOCLIMATE MODELS 〉 LITHOSPHERIC MODELS (Vs/Vp) ; 4DMB ; 4D Mountain Building ; geophysics ; seismology ; tectonics ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS ; EARTH SCIENCE SERVICES 〉 MODELS 〉 GEOLOGIC/TECTONIC/PALEOCLIMATE MODELS
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 22
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    Unbekannt
    U-Pb age, whole rock and mineral composition of the Angicos Plutonism (Angicos Batholith and Poço da Oiticica Stock) from northern Borborema Province, NE Brazil (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-02-26
    Beschreibung: Abstract
    Beschreibung: This dataset comprises new chemical, isotopic and geochronological analyses for 14 samples from the Angicos Plutonism (Angicos Batholith and Poço da Oiticica Stock) from northern Borborema Province, NE Brazil. Whole rock major and trace element compositions as well as mineral oxide compositions for feldspars, biotite, and Fe-oxides. New analyses on 14 samples are presented in the bulk and in-situ data templates developed by EarthChem. A compilation of all new analyses and previous whole-rock data from Jardim de Sá (1994) are also provided. Analyses were carried out at the Geoanalítica Core Facility at the Instituto de Geociências, University of São Paulo, Brazil. The data are reported with the EarthChem/ DIGIS data templates (IEDA, 2022).
    Beschreibung: Other
    Beschreibung: The DIGIS geochemical data repository is a research data repository in the Earth Sciences domain with a specific focus on geochemical data. The repository archives, publishes and makes accessible user-contributed, peer-reviewed research data in standardised form (EarthChem Team, 2022, https://doi.org/10.26022/IEDA/112263) that fall within the scope of the GEOROC database (https://georoc.eu). All submissions of new data will be considered for inclusion in the GEOROC database. It is hosted at GFZ Data Services through a collaboration between the Digital Geochemical Data Infrastructure (DIGIS) for GEOROC 2.0 (https://digis.geo.uni-goettingen.de) and the GFZ German Research Centre for Geosciences.
    Schlagwort(e): Equigranular texture ; Brasiliano-Panafrican ; West Gondwana ; major elements ; trace elements ; bulk analyses ; in-situ analyses ; granite ; whole rock analyses ; EMP ; electron microprobe ; XRF ; x-ray fluorescence ; LOI ; loss of ignition ; ICP-MS ; inductively coupled plasma mass spectrometry ; compound material 〉 igneous material 〉 igneous rock 〉 phaneritic igneous rock 〉 granitoid ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES ; Phanerozoic 〉 Paleozoic 〉 Cambrian ; Precambrian 〉 Proterozoic 〉 Neoproterozoic 〉 Ediacaran
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 23
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    Unbekannt
    Seismological experiment at Strokkur from 2020 (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-07
    Beschreibung: Abstract
    Beschreibung: Seismological experiment at Strokkur from 2020" is a seismological experiment realized at the most active geyser on Iceland by Eva Eibl (University of Potsdam) in collaboration with Gylfi P. Hersir formerly at ISOR Iceland. The geyser is part of the Haukadalur geothermal area in south Iceland, which contains numerous geothermal anomalies, hot springs, and basins (Walter et al., 2018). Strokkur is a pool geyser and has a silica sinter edifice with a water basin on top, which is about 12m in diameter with a central tube of more than 20m depth. The aim of the seismic experiment is to monitor eruptions of Strokkur geyser from March 2020 using three broadband seismic stations (Nanometrics Trillium Compact 120s). Sensors were buried at distances of 38.8m (GE4, SE), 47.3m (GE3, SW), and 42.5m (GE2, N) from Strokkur center. Within this time period about 1 month of data is missing due to power outages. At any other times at least one station recorded the eruptions. From this dataset, converted to MSEED using Pyrocko, currently a catalogue of 506,131 water fountains was determined and further investigated in Eibl et al. (2025). In addition, Eibl et al. (2025) assessed the effect of the weather on the system including the bubble trap suspected at around 24 m depth by Eibl et al. (2021). Waveform data are available from the GEOFON data centre, under network code 2Z.
    Schlagwort(e): geyser ; water eruption ; hydrothermal system ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 VOLCANIC ACTIVITY ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS 〉 SEISMOLOGICAL STATIONS ; Geophysics ; Passive seismic ; Seismometers ; Velocity ; MiniSEED ; Temporary ; Volcano
    Materialart: Dataset , Seismic Network
    Format: ~300GB
    Format: .mseed
    Format: XML
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 24
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    Unbekannt
    Hydrogeochemical dataset for characterization of the deep Aalenian Sandstone aquifer (Middle Jurassic) in Potsdam, Germany (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-12
    Beschreibung: Abstract
    Beschreibung: This dataset is part of a research collaboration between Energie und Wasser Potsdam (EWP) and the GFZ Helmholtz Centre for Geosciences. The main objective of this research collaboration was to evaluate the suitability of the subsurface in the Potsdam area for deep geothermal energy. EWP is currently constructing a geothermal power plant using the aquifer of the here exploited Jurassic sandstones. From December 2022 to May 2023, two deep wells were drilled in the center of the city Potsdam, Germany, targeting the Jurassic Aalenian Sandstone at depths between 983 and 1180 m below surface. Hydraulic tests were performed immediately after completion of each well. More than 15,000 m3 of formation water was produced. Geochemical analysis were performed on the produced formation water with the objective of characterizing the fluid properties in terms of geothermal usage, e.g. corrosion and scaling potential. The results of the analysis of physicochemical on-site monitoring and performed on-site tests, inorganics, organics, gas composition, heat capacity and naturally occurring radioactive materials are presented in this data publication.
    Schlagwort(e): Potsdam ; geothermal energy ; fluid monitoring ; physicochemical analysis ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOTHERMAL DYNAMICS 〉 GEOTHERMAL ENERGY ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 GROUND WATER 〉 GROUNDWATER CHEMISTRY
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 25
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    Unbekannt
    R-Package – Supplement to: Constraints on the role of marine authigenic clay formation in determining seawater lithium isotope composition (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-13
    Beschreibung: Abstract
    Beschreibung: This publication contains the R-Package used to solve the calculations performed in Läuchli et al., (2025). The package contains a README.txt file, as well as six scripts stored in the "scripts" file including: (1) "main_script.R" running the complete Monte-Carlo simulation, (2) "calling_data.R" calling the data, (3) "isotope_signature.R" extracting the isotope signature of marine authigenic clays using the dataset presented in Läuchli et al., (submitted), (4) "global_fluxes_uncertainties_rivers.R" simulating uncertainties associated with single-data point river on global estimations of the lithium flux from discharged by rivers to seawater, (5) "global_fluxes.R" solving the ocean lithium isotope budget, and The data files necessary to solve the R-Package are provided as .csv and stored in the "csv" file. Output files are stored in the "export" file. The scripts are written for the R Software. The data were acquired as part of the German Science Foundation (DFG) priority program SPP-1803 “EarthShape: Earth Surface Shaping by Biota” initiated and lead by Friedhelm von Blanckenburg and Todd Ehlers. The GeoB cores samples were provided by the MARUM Research Center (Bremen). The 22SL Gravity Core was stored and supplied by the Bundesanstalt für Geowissenschaften und Rohstoffe (BGR, Hannover). -------------------------------------------------- Packages: The R packages devtools, dplyr, compositions, tidyr, EnvStats, gdata, and gmp were used for calculations. The R-Package was managed using packrat: compositions (Boogaart et al., 2022; License: GPL 〉= 2) devtools (Wickham et al., 2022; MIT License) dplyr (Wickham et al., 2022; MIT License) EnvStats (Millard, 2022; License: GPL 〉= 3) gdata (Warnes et al., 2022; License: GPL-2) gmp (Lucas et al., 2023; License: GPL 〉= 2) packrat (Ushey et al., 2022; License: GPL-2) tidyr (Wickham and Girlich, 2022; MIT License)
    Beschreibung: Other
    Beschreibung: The DFG Priority Program 1803 "EarthShape - Earth Surface Shaping by Biota" (2016-2022; https://www.earthshape.net/) explored between scientific disciplines and includes geoscientists and biologists to study from different viewpoints the complex question how microorganisms, animals, and plants influence the shape and development of the Earth’s surface over time scales from the present-day to the young geologic past. All study sites are located in the north-to-south trending Coastal Cordillera mountains of Chile, South America. These sites span from the Atacama Desert in the north to the Araucaria forests approximately 1300 km to the south. The site selection contains a large ecological and climate gradient ranging from very dry to humid climate conditions.
    Schlagwort(e): LIthium isotopes ; Reverse weathering ; Authigenic clays ; Deep marine sediments ; Long-term carbon cycle ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS 〉 DIAGENESIS ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS 〉 SEDIMENT CHEMISTRY ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS 〉 SEDIMENT COMPOSITION ; EARTH SCIENCE 〉 OCEANS 〉 OCEAN CHEMISTRY 〉 MARINE GEOCHEMISTRY
    Materialart: Software , Software
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 26
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    Unbekannt
    Geochemical, modelled, and compiled (literature-based) data used to constrain the role of marine authigenic clay formation in setting the lithium isotope composition of seawater (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-13
    Beschreibung: Abstract
    Beschreibung: This data publication is supplementary to a study on the effect of the formation of cation-rich authigenic aluminosilicate clays during the early diagenesis of detrital sediments on the seawater lithium isotope composition by Läuchli et al., (2025). The dataset contains elemental ratios and lithium isotope ratios from (1) river sediments sampled in March 2019 the vicinity of the coastline, (2) marine surface sediments from Multlicorer sampling device from the R/V Sonne Cruise SO156 and the R/V Sonne Cruise SO102 and (3) marine samples from the gravity core sites GeoB 7139-2 (R/V Sonne Cruise SO156), GeoB 3304-5 (R/V Sonne Cruise SO102) and 22SL (Sonne Cruise SO161-5). The dataset is provided here as a single .xlsx file containing one data sheet. Metadata including International Generic Sample Numbers (IGSNs) are provided for each sample. The data were acquired as part of the German Science Foundation (DFG) priority program SPP-1803 “EarthShape: Earth Surface Shaping by Biota” initiated and lead by Friedhelm von Blanckenburg and Todd Ehlers. The GeoB cores samples were provided by the MARUM Research Center (Bremen). The 22SL Gravity Core was stored and supplied by the Bundesanstalt für Geowissenschaften und Rohstoffe (BGR, Hannover).
    Beschreibung: Other
    Beschreibung: The DFG Priority Program 1803 "EarthShape - Earth Surface Shaping by Biota" (2016-2022; https://www.earthshape.net/) explored between scientific disciplines and includes geoscientists and biologists to study from different viewpoints the complex question how microorganisms, animals, and plants influence the shape and development of the Earth’s surface over time scales from the present-day to the young geologic past. All study sites are located in the north-to-south trending Coastal Cordillera mountains of Chile, South America. These sites span from the Atacama Desert in the north to the Araucaria forests approximately 1300 km to the south. The site selection contains a large ecological and climate gradient ranging from very dry to humid climate conditions.
    Schlagwort(e): Lithium isotopes ; Reverse weathering ; Authigenic clays ; Deep marine sediments ; Long-term carbon cycle ; Silicate weathering feedback ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS 〉 DIAGENESIS ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS 〉 SEDIMENT CHEMISTRY ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS 〉 SEDIMENT COMPOSITION ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS 〉 TERRIGENOUS SEDIMENTS ; EARTH SCIENCE 〉 OCEANS 〉 OCEAN CHEMISTRY
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 27
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    Unbekannt
    gravitools - A collection of tools to analyze gravimeter data (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-14
    Beschreibung: Abstract
    Beschreibung: This Python package is a collaborative effort by the gravity Metrology group at the German Federal Agency for Carthography and Geoesy (BKG) and the Hydrology section at GFZ Helmholtz Centre for Geosciences. It comprises functionalities and features around the respectively new instrument type of a Quantum Gravimeter (here AQG). New (standardized) instrument data format additional to new measurement and processing concepts lead to the first collection of scripts and now complete python package for a fully-featured analysis of AQG data. This encompasses live-monitoring while the instrument is actually measuring (with enhanced functionality than what is provided by the manufacturer), data processing, visualizations as well as archiving data, fulfilling the idea of reproducible data within FAIR principles. Many of these functionalities and concepts also apply to other gravimeter types. It is thus planned to include also access and processing of data for these other devices (starting in the near future with CG-6 relative gravimeters). This package is actively maintained and developed. If you are interested in contributing, please do not hesitate to contact us. Please find instructions for its installation and usage in the documentation or git repository, linked in the left panel. gravitools is listed in the python standard repository database "PyPi". Some highlight features, available in the first official stable release are: •Read and process raw data of the Exail Absolute Quantum Gravimeter (AQG) •Apply standardized or customized AQG data processing and outlier detection •Read and write processed datasets with metadata to .nc-files in NETCDF4-format •Handle Earth orientation parameters (EOP) from iers.org for polar motion correction •Visualize data with matplotlib •CLI for standard processing of AQG raw data to .nc-file •Dashboard for real-time processing and visualization during measurements (on AQG laptop) •Dashboard includes a proposed standard template for a measurement protocol •Standardized, easy-to-read and modify config files for processing options and reproducible data handling •Generation of PDF reports from individual measurements
    Schlagwort(e): gravity measurements ; quantum gravimetry ; data analysis ; FAIR principles ; python ; EARTH SCIENCE 〉 SOLID EARTH 〉 GRAVITY/GRAVITATIONAL FIELD 〉 CONTROL SURVEYS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GRAVITY/GRAVITATIONAL FIELD 〉 GRAVITY ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Gravimeters
    Materialart: Software , Software
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 28
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    Unbekannt
    EnvSeis project, Kåfjor (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-14
    Beschreibung: Abstract
    Beschreibung: This network of sixteen geophones and six broadbands was installed in Kåfjord, Troms ogFinnmark, Norway, to study two rockslides: Njárgavárri and Indre Nordneset. Each study site had three broadbands from September 2023 to June 2025. In addition, were installed and recording: September – November 2023: six geophones on each site; April – August 2024: four geophones at Njárgavárri and ten at Indre Nordneset. The geophones were installed locally around the rockslides while the broadbands were installed one to a few kilometers from the rockslides (except for one of them directly at Indre Nordneset). The geophones in Njárgavárri were first installed as two triangular antennas of four stations each (three in triangle and one in the middle) and were then replaced by a small aperture array around the most active part of the unstable slope. The goal was to record all activities: rock falls, cracking and creeping movements. In Indre Nordneset, the geophone stations were placed in a small aperture array all around the main scarp and surface of failure to record the cracking activity. The geophones are of type 3-D Geophone PE-6/B with DATA-CUBE3 (built-in GPS). The broadbands are of type STS-2.5 with EDR-10 digitizers. Sampling frequency was 400 Hz for geophone stations, 200 Hz broadbands. Gain was at 16 (15.258789 nV/count) for the geophone stations, set on high (100 nV/bit) for the broadband stations. Waveform data is available from the GEOFON data centre, under network code 8I.
    Schlagwort(e): rockslides ; rock fall ; creeping landslides ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 VOLCANIC ACTIVITY ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS 〉 SEISMOLOGICAL STATIONS ; Geophysics ; Passive seismic ; Seismometers ; Velocity ; MiniSEED ; GIPP ; MESI ; Temporary ; Polar/ice
    Materialart: Dataset , Seismic Network
    Format: 495GB
    Format: .mseed
    Format: XML
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 29
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    Unbekannt
    Normalized peak intensities obtained from the molecular analysis of organic matter from purple glacier ice- and red snow-algae dominated surface habitats collected close to the QAS-M Promice weather station on the southern tip of the Greenland Ice Sheet (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-17
    Beschreibung: Abstract
    Beschreibung: This dataset provides molecular formulae with their normalized mass peak intensities obtained from ultrahigh resolution mass spectrometric analysis of organic matter (OM) from glacier purple ice- and red snow-algae dominated samples collected upwind of the DEEP PURPLE ice camp (deeppurple-ercsyg.eu) on the surface of the Greenland Ice Sheet. The samples are represented by the initial OM from glacier ice- (T0_Ice) and snow-algae (T0_Snow) dominated habitats and the up to 24 days (T3-T24) in situ incubated samples under dark (D) and light (L) conditions. OM samples, include dissolved organic matter (DOM) and particulate organic matter (POM), the latter extracted with hot water (HW) and sodium hydroxide (Na) to represent water-soluble and particle-associated OM, respectively (see methods). Molecular analyses were performed on a Solarix Fourier transform ion cyclotron resonance mass spectrometer (FTICR-MS) equipped with a 15 Tesla superconducting magnet (Bruker Daltonic) using an electrospray ionization source (ESI, Bruker Apollo II) in negative ion mode on DOM samples and POM extracts previously solid phase extracted (SPE, Dittmar et al., 2008). Molecular formula calculation for all samples was performed using the software ICBM-OCEAN (Merder et al., 2020) and include the following combination of elements: C0-100, O0-50, H0-200, N0-4, S0-2 and P0-1 (the full description of the data and methods is provided in the data description file). Because DOM and POM samples were analyzed in duplicates in the mass spectrometer, a compound was considered to be present if it appeared in both duplicate measurements. The mean normalized intensity of duplicate measurements is presented here and was further used for statistical analysis in Rossel et al., to be submitted. This dataset contains 8827 molecular formulae with their normalized peaks intensities.
    Schlagwort(e): snow and glacial ice algal blooms ; dissolved and particulate organic matter ; carbon dynamics ; Fourier-transform ion cyclotron mass spectrometry ; Arctic ; Greenland Ice Sheet ; EARTH SCIENCE 〉 CRYOSPHERE 〉 GLACIERS/ICE SHEETS ; EARTH SCIENCE 〉 CRYOSPHERE 〉 SNOW/ICE 〉 SNOW/ICE CHEMISTRY
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 30
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    Unbekannt
    Results of non-metric Multidimensional scaling (NMDS) based on Bray Curtis dissimilarity of organic matter molecular compositions of purple glacier ice- and red snow-algae dominated surface samples collected close to the QAS-M Promice weather station on the southern tip of the Greenland Ice Sheet. (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-17
    Beschreibung: Abstract
    Beschreibung: These datasets display the results of multivariate statistical analysis non-metric multidimensional scaling (NMDS) based on Bray Curtis dissimilarity of the organic matter (OM) molecular compositions of surface glacier purple ice- and red snow-algae dominated samples collected on the Greenland Ice Sheet at ca. 61°1’ N,46°8’ W (Rossel et al., 2025). The molecular compositions of the samples were obtained by ultrahigh resolution analysis on a 15 Tesla Fourier transform ion cyclotron resonance mass spectrometer (FTICR-MS, Rossel et al., 2025). All reported NMDS datasets display the molecular loadings and samples scores for the first two axes of the NMDS (NMDS1 and NMDS2), the number occurrences of each molecular formula per sample type, and molecular properties of the formulae such as: mass (MWwa), hydrogen/carbon (H/Cwa) and oxygen/carbon (O/Cwa) ratios, aromaticity index (AI-modwa), double bond equivalents (DBEwa) and DBE minus oxygen (DBE-Owa), Nominal oxidation state of carbon (NOSCwa) and the molecular category the formula was assigned (Aromatics, Condensed aromatics, highly unsaturated, unsaturated aliphatics and saturated). Furthermore, the NMDS datasets are separated according to the compared sample set. In the first NMDS analysis (Table S1, Fig 1 in Rossel et al., in review), we compared all samples: the initial OM from glacier ice- (T0_Ice) and snow-algae (T0_Snow) dominated habitats and the up to 24 days (T3-T24) in situ incubated samples under dark (D) and light (L) conditions. These OM samples, include both dissolved organic matter (DOM) and particulate organic matter (POM), the latter extracted with hot water (HW) and sodium hydroxide (Na) to represent water-soluble and particle-associated OM, respectively (see methods). In the second and third NMDS analyses, we compared DOM and POM samples separated (Table S2 and Table S3, respectively). Following the separation of all analyzed samples in the first NMDS (purple and red samples in Fig 1 in Rossel et al., in review), OM molecular signals related to glacier ice-algae (Table S4) and snow-algae (Table S5) were separated using NMDS1 values ≤ 0.45 and ≥ 0.45, respectively (Fig. 1b and Fig. 1c in Rossel et al., in review). Additionally, these separated molecular signals for glacier ice-algae and snow-algae samples were used to calculate intensity weighted (subscript wa) values for MWwa, H/Cwa and O/Cwa ratios, AI-modwa, NOSCwa, DBEwa and DBE-Owa for each sample (Table S6).
    Schlagwort(e): snow and glacial ice algal blooms ; dissolved and particulate organic matter ; Arctic ; Greenland Ice Sheet ; EARTH SCIENCE 〉 CRYOSPHERE 〉 GLACIERS/ICE SHEETS ; EARTH SCIENCE 〉 CRYOSPHERE 〉 SNOW/ICE ; EARTH SCIENCE 〉 CRYOSPHERE 〉 SNOW/ICE 〉 SNOW/ICE CHEMISTRY
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 31
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    Unbekannt
    Dissolved organic carbon concentrations from the dissolved organic matter (DOM) and extracted particulate OM (POM) obtained from purple glacier ice- and red snow-algae dominated surface habitats collected close to the QAS-M Promice weather station on the southern tip of the Greenland Ice Sheet (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-18
    Beschreibung: Abstract
    Beschreibung: This dataset provides the dissolved organic carbon (DOC) concentrations of the organic matter (OM) obtained from glacier purple ice- and red snow-algae dominated samples collected upwind of the DEEP PURPLE ice camp (deeppurple-ercsyg.eu) on the surface of the Greenland Ice Sheet. The samples are represented by the initial OM from glacier ice- (T0_Ice) and snow-algae (T0_Snow) dominated habitats and the up to 24 days (T3-T24) in situ incubated samples under dark (D) and light (L) conditions. OM samples, include dissolved organic matter (DOM) and particulate organic matter (POM), the latter extracted with hot water (HW) and sodium hydroxide (Na) to represent water-soluble and particle-associated OM, respectively (see methods). Dissolved organic carbon concentrations were determined as non-purgeable organic carbon obtained from replicate measurements of DOM and POM extracts analyzed in a Shimadzu high-sensitivity TOC-V analyzer. The concentrations in this dataset are part of the supplementary material in Rossel et al. (2025).
    Schlagwort(e): snow and glacial ice algal blooms ; dissolved and particulate organic matter ; carbon dynamics ; Arctic ; EARTH SCIENCE 〉 CRYOSPHERE 〉 GLACIERS/ICE SHEETS ; EARTH SCIENCE 〉 CRYOSPHERE 〉 SNOW/ICE ; EARTH SCIENCE 〉 CRYOSPHERE 〉 SNOW/ICE 〉 SNOW/ICE CHEMISTRY
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 32
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    Unbekannt
    OGS Core Logging Lab - logging sediment cores in Lago Argentino (Brazo Sur), Argentina (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-03-26
    Beschreibung: Abstract
    Beschreibung: The spectacular water outburst occurring semi-periodically when the ice-dam formed by the external front of the Perito Moreno glacier collapses, is one of the most attracting events in the UNESCO ‘Parque Nacional Los Glaciares’ of southern Patagonia. These occurrences have been documented since 1936. Instead, evidence of previous events has been only indirectly provided by dendrochronology analysis. Four sediments cores have been collected on coastal soil in 2017, analysed by X rays, HR photography and Magnetic Susceptibility. The radiographies of these cores allowed to identify lake floodings deposits due to glacier readvance over the coastal soil related to the collapse of the Perito Moreno ice-dam. In November 2018, 10 undisturbed sediment gravity cores were collected within a small inlet of Brazo Sur, that is, the southern arm of Lago Argentino, at water depths ranging from 10 to 6 m using a 4.5 cm diameter gravity corer ‘KC Kajak Sediment Sampler’ Model 13.030. The length of these cores varies from 45 to 65 cm. X rays, HR photography and magnetic susceptibility provide the first evidence of an abrupt change in the stratigraphic record found at variable depths of 14–18 cm from the top of the cores, marked by a hiatus spanning ca. 3200 years, separating planar-laminated sediments below from an alternation of erosional and depositional events above it, indicating recurring high-energy conditions generated by the emptying of the lake basin, as well as ash layers observed in the longest cores. Radio carbon data collected on three of these cores record ice-daming in the Little Ice age, at 324-266 cal yrs BP. These well-preserved stratigraphic records highlight the key role of glaciolacustine deposits in reconstructing the glacial dynamics and palaeoclimate evolution of a glaciated region.
    Beschreibung: TechnicalInfo
    Beschreibung: Magnetic Susceptibility data has been acquired by a Barrington point sensor MS2E, mounted on Geotek® Multisensoriale Core Logger. Resolution to 2×10-6 SI Range 26 SI Measurement period down to 0.1s High Resolution Photography have been acquired by the Geoscan V linescan camera installed onto the Geotek® Multi Sensor Core Logger, together with RGB data every centimetre. Specification: Camera Geotek GEOSCAN V 5000 pixel CCD linescan camera, with standard Canon lens mount. Light source Broad-spectrum LED illumination or ultraviolet LEDs for UV fluorescence imaging. Images Output 50 micron per pixel 48-bit RGB TIFF images, converted to 24-bit colour JPG on request. X Rays have been acquired by Geotek® CT System (XCT). Acquisition parameters: XR source: voltage 80 kV current 200 uA Detector Resolution: 1920 x 1536 pixel Image resolution: 245 pixel/cm
    Schlagwort(e): Ice-damming ; lithostratigraphic hiatus ; Little Ice Age ; Perito Moreno glacier ; EPOS ; multi-scale laboratories ; rock and melt physical properties ; EARTH SCIENCE 〉 PALEOCLIMATE 〉 OCEAN/LAKE RECORDS 〉 LAKE LEVELS ; EARTH SCIENCE 〉 PALEOCLIMATE 〉 OCEAN/LAKE RECORDS 〉 SEDIMENTS ; EARTH SCIENCE 〉 PALEOCLIMATE 〉 OCEAN/LAKE RECORDS 〉 STRATIGRAPHIC SEQUENCE ; EARTH SCIENCE 〉 PALEOCLIMATE 〉 PALEOCLIMATE RECONSTRUCTIONS 〉 LAKE LEVEL RECONSTRUCTION
    Materialart: Dataset , Dataset
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    DATEN GFZ
  • 33
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    Analysing Carbon Storage in Vegetation and Soils of an African Savanna Ecosystem (2025)
    TRR228-DB
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    Publikationsdatum: 2025-03-20
    Beschreibung: Abstract
    Beschreibung: This script provides code of the following publication: Manuscript authors: L. Kindermann, A. Sandhage-Hofmann, W. Amelung, J. Börner, M. Dobler, E. Fabiano, M. Meyer, A. Linstädter Manuscript title: Natural and human disturbances have non-linear effects on whole-ecosystem carbon storage in an African savanna published with: Global Change Biology Year: 2025 Code author: Liana Kindermann, Biodiversity Research / Systematic Botany, University of Potsdam Contact: Liana.kindermann@uni-potsdam.de
    Schlagwort(e): Ecology ; Biota ; Carbon ; Carbon Storage Dynamics ; Vegetation ; Vegetation Structure ; Soil Carbon ; Soil Fertility ; Land Use Change ; Ecosystem ; Soil Organic Carbon
    Materialart: Software , Script for open-source R softw
    Format: ZIP
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  • 34
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    Combined noble gas analyses and p-T estimates from mineral separates and xenoliths, as well as noble gas analyses from free gas: A study of the origin of young(est) volcanism and magmatic activity in western Bohemia, Czech Republic (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-03-20
    Beschreibung: Abstract
    Beschreibung: The western Eger Rift in the Czech Republic is a currently inactive volcanic area characterized by earthquake swarms and degassing of mantle-derived fluids. Gases obtained from minerals and from repeatedly sampled free gases are used to trace the origin and evolution of volatiles and determine the conditions of the magma reservoir. Helium isotopes in fluids and minerals are up to 5.95 RA, with 20Ne/22Ne ratios up to ~11.0 and 21Ne/22Ne ratios up to ~0.048, suggesting a mixed atmospheric-mantle source for neon. Some crustal input may also be present. The slightly lower-than-mantle He isotopic ratios and the variability in Ne isotopic compositions indicate that these gases may have been impacted by a subduction-related crustal component during the Variscan (or Hercynian) Orogeny. 40Ar/36Ar ratios are higher than atmospheric levels and arrive up to 4680, indicating a mixture of atmospheric and mantle sources. Thermobarometry of pyroxene mineral grains reveals temperatures and pressures suggesting that the crystallization started at ~75 km depth and ended at ~20 km depth following a smooth p-T course. This implies diverse magma ascent conditions. A total of 56 gas samples were collected from two intensively degassing areas in the western Eger Rift (Czech Republic), namely the mofette fields of Bublák and Hartoušov. From the Hartoušov mofette field, 24 gas samples of fluids ascending in two boreholes (F1:∼28 m depth and F2: ∼108 m depth) and 22 samples of gases emerging in two nearby ponds [surface expressions Hartoušov Mofette (HM) and Hartoušov Mofette South (HMS)] were taken. Ten samples were collected from a pond in the Bublák mofette field (Bbl). In addition to the gas samples, ten rock samples were collected from rock exposures [i.e. Libá (LI) and Číhaná (CI) in quarries, Horní Slavkov (HS1&2), Pila (PI), Dolní Dražov (DD), Kadaň (KN), Horní Paseky (HP), and Slapany (SL) in natural cliffs, and Hlinky (HL) in an outcrop] within the western Eger rift area. In addition, six samples of ultramafic nodules/xenoliths were obtained from the Quaternary tephra deposit of the Mýtina maar and from Železná hůrka scoria cone. Gas and rock sampling:
    Schlagwort(e): p-T estimations ; noble gases ; Variscan Orogeny ; Subcontinental Lithospheric Mantle ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROCESSES ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 ISOTOPE RATIOS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 ISOTOPES ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 GRABEN
    Materialart: Collection , Collection
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    DATEN GFZ
  • 35
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    Nature of the mantle-crust transition in the Finero Complex (Ivrea-Verbano Zone, Southern Alps) (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-03-23
    Beschreibung: Abstract
    Beschreibung: The Finero Complex (northern Ivrea-Verbano Zone; Southern Alps) has well-exposed contacts between rocks of the upper mantle and lower continental crust. The core of the Complex is composed by the Finero Phlogopite Peridotite (FPP) mantle unit, which is wrapped out by an intercalation of mafic ultramafic crustal rocks (Zanetti et al., 1999; Ogunyele et al. 2024). The first crustal unit in contact with the FPP is the Layered Internal Zone (LIZ), overlaid by the Amphibole Peridotite and the External Gabbro units. In order to characterize the nature of this transition, a detailed investigation has been performed on the outcrop at the confluence between Rio Cannobino and Rio Creves (46° 6'17.00"N, 8°32'39.88"E). The mantle unit mostly comprises secondary medium-granular harzburgite, including phlogopite and amphibole, showing a pervasive foliation parallel to the mantle/crust contact. This latter is apparently magmatic. As the contact is approached, the size of the olivine grains decreases, and the peridotite composition gets enriched in orthopyroxene, phlogopite and amphibole. The mantle side of the contact is predominantly characterized by a layer, up to 1 m thick, of weakly deformed coarse-granular amphibole-biotite-bearing orthopyroxenite, with the strike roughly parallel to the foliation. Subordinately, the phlogopite harzburgite is directly in contact with the LIZ. The crustal side consists of a layered series of garnet-amphibole-bearing gabbroic rocks, which are intruded by concordant to discordant pegmatoidal hornblendite layers and pockets, sometimes with interstitial plagioclase. In places, hornblendite layers reach the contact with the FPP, reacting with the orthopyroxenite layer. In-situ geochemical characterization was performed on various mineral phases, including amphibole, olivine, pyroxene, garnet, plagioclase, and phlogopite, from rocks of both mantle and crustal sections. A total of seven samples were analyzed. The contact between the mantle and crustal sections is marked by an orthopyroxenite layer, represented by the sample amphibole-bearing orthopyroxenite (15FI33D). Four samples were collected from the mantle unit at varying distances from this contact: amphibole-phlogopite-bearing harzburgite (15FI33A, 3 m; 15FI33B, 1.5 m; 15FI33C, 0.5 m). The crustal unit comprised three samples, also taken at different distances from the contact: hornblendite (15FI33E, 0.5 m), plagioclase-bearing hornblendite (15FI33F, 1.5 m), and amphibole gabbro with garnet (15FI33G, 1.7 m).
    Materialart: Dataset , Dataset
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  • 36
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    Sensitivity of boron adsorption on clays to changes in seawater chemistry (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-03-19
    Beschreibung: Abstract
    Beschreibung: The adsorption of boron on detrital particles like clay or metal oxides is thought to be a major mechanism driving changes in the boron isotopic composition of seawater on geologic timescales. However, the sensitivity of adsorption parameters to long-term changes in the seawater concentration of major ions (Mg2+, Ca2+, SO42-) and dissolved inorganic carbon (HCO3-, CO32-) is not known. We conducted multiple sets of adsorption experiments that consist of suspending pretreated clay minerals (either kaolinite, smectite or illite) in artificial seawater with a modified chemical composition. Specifically, we investigate adsorption in seawater with a major ion composition resembling that of the Cretaceous (100 Ma) and the Eocene (50 Ma), as well as modern seawater with either reduced or elevated concentrations of dissolved inorganic carbon. We finally combine the results with modeled values for the mineral assemblage of detrital sediment to constrain boron adsorption fluxes in the past. The dataset consists of two sheets that store (1) the results of our adsorption experiments and (2) the modeled sediment properties. Experiments were performed on KGa-1b kaolinite, SWy-3 smectite and IMt-2 illite obtained from the Clay Mineral Society. For each of these clays, a consistent particle size fraction of 2 – 0.2 μm was extracted by repeated centrifugation and decantation. As a result, clay samples used in the experiments have a high mineralogical purity of 95% (in the case of kaolinite and illite) and 50% (in the case of smectite). Pretreated clays were submerged in one of four different boron-containing artificial seawater solutions. These seawater solutions were prepared by mixing trace element-grade salts with ultrapure water according to the recipe of Millero (2013). Specifically, the amounts of added MgCl2, CaCl2, Na2SO4 and NaHCO3 were varied to produce four different seawater stock solutions that have (i) a major ion concentration similar to Eocene seawater; (ii) a major ion concentration similar to Cretaceous seawater; (iii) a DIC concentration half as high as in modern seawater; (iv) a DIC concentration twice as high as in modern seawater. Clay and seawater were allowed to interact for 48h through continuous agitation, after which solution samples were extracted.
    Schlagwort(e): seawater model ; clay ; boron isotopes ; boron adsorption ; compound material 〉 sedimentary material 〉 sediment 〉 clastic sediment 〉 mud 〉 clay ; compound material 〉 sedimentary material 〉 sediment 〉 mud size sediment 〉 mud 〉 clay ; EARTH SCIENCE 〉 LAND SURFACE 〉 EROSION/SEDIMENTATION 〉 SUSPENDED SOLIDS ; EARTH SCIENCE 〉 OCEANS 〉 MARINE SEDIMENTS 〉 TERRIGENOUS SEDIMENTS ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 SURFACE WATER 〉 SURFACE WATER CHEMISTRY ; In Situ/Laboratory Instruments 〉 Spectrometers/Radiometers 〉 MC-ICP-MS
    Materialart: Dataset , Dataset
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    DATEN GFZ
  • 37
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    Hierarchical Clustering with Visualizations (hc-viz) (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-04-03
    Beschreibung: Abstract
    Beschreibung: This repository offers a straightforward implementation of hierarchical clustering coupled with interactive visualizations. The visualization depicts the clusters on a map and an interactive dendrogram to users. The interactive visualization allows users to explore the hierarchical cluster structure and navigate different levels of granularity of the dendrogram.
    Schlagwort(e): Hierarchical Clustering ; Visualization ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE
    Materialart: Software , Software
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    DATEN GFZ
  • 38
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    Equation of state vs. data comparison and mathematical demonstration of some equations used in the halite fluid inclusion paleothermometry model HaliBubble (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-04-02
    Beschreibung: Abstract
    Beschreibung: Supplementary information for "A physical model for accurate paleotemperature reconstruction from fluid inclusions in halite" (Guillerm et al., 2025). The supplementary material contains a model-data comparison of the equation of state for aqueous solutions used in the associated paper. Also contains details about, and developments of, the equations of the associated article (Guillerm et al., 2025).
    Schlagwort(e): aqueous geochemistry ; Microthermometry ; femtosecond laser ; Brillouin thermometry ; paleoclimate ; liquid pressure ; yield stress ; Laplace pressure ; hydrostatic pressure ; HaliBubble ; compound material 〉 sedimentary material 〉 chemical sedimentary material 〉 evaporite ; EARTH SCIENCE 〉 OCEANS 〉 OCEAN TEMPERATURE 〉 WATER TEMPERATURE
    Materialart: Text , Text
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    DATEN GFZ
  • 39
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    KiK-NET and K-NET flatfile with automatically processed ground motions (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-04-04
    Beschreibung: Abstract
    Beschreibung: Ground-motion flatfiles are commonly used to develop ground motion models (GMMs) and for systematical analysis of ground motions over a wide range of distances and earthquake magnitudes. A flatfile is organized as a table of properties and various intensity measures of earthquake waveforms, including data processing parameters. Here we present a comprehensive processed ground-motion flatfile containing data from the Kyoshin (K-NET) and Kiban-Kyoshin (KiK-net) networks operated by National Research Institute for Earth Science and Disaster Resilience (NIED) (2019) in Japan (Okada et al., 2004; Aoi et al., 2011). This flatfile contains 914,628 ground motions from 18,018 events recorded by 1,749 stations. Out of these, 434,898 ground-motions are from KiK-net and 479,730 from K-net. The events were recorded between June 1996 and September 2024, covering distances up to 1200 km and magnitudes between 2.5 and 9. The ground motions have been automatically processed, and metadata describing each event and record are provided in the flat file. An overview of the flatfiles and the processing steps to derive the reported ground-motion parameters is provided in this report. Further details and discussion about the flatfile compilation can be found in the corresponding publication: Loviknes, K., von Specht, S., Lilienkamp, H., Händel, A., and Cotton, F. (2025). Harmonized KiK-net and K-NET flatfile for systematic analysis of earthquake ground motions (submitted to Seismica, February 2025).
    Schlagwort(e): Ground motions ; Kyoshin ; Automatic processing ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 NATURAL HAZARDS 〉 EARTHQUAKES ; geological process 〉 seismic activity 〉 earthquake ; science 〉 materials science 〉 engineering 〉 seismic engineering
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 40
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    Deep OCean Test ARray DOCTAR (OBS part) (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-04-15
    Beschreibung: Abstract
    Beschreibung: This is the first deployment of a teleseismic broadband array consisting of 12 three-component stations with an aperture of about 50 km in the deep ocean in about 5000 m water depth. The data can be compared with two other deployments on Madeira and in western Portugal mainland which had similar array layouts and recording time spans (network Y7). The broadband data enable furthermore analysis of the crust and upper mantle beneath the array near to the Gloria fault, a major transform fault in the North Atlantic. Recordings of numerous local and regional earthquakes make a precise location of active structures possible. Waveform data is available from the GEOFON data centre, under network code 3J.
    Schlagwort(e): EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 OCEANS 〉 MARINE GEOPHYSICS ; Instruments 〉 In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Seismometers ; Instruments 〉 In Situ/Laboratory Instruments 〉 Profilers/Sounders 〉 Acoustic Sounders 〉 HYDROPHONES ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS ; Geophysics ; Passive seismic ; Seismometers ; Hydrophones ; Velocity ; MiniSEED ; DEPAS Pool ; OBS ; Temporary
    Materialart: Dataset , Seismic Network
    Format: 180GB
    Format: .mseed
    Format: XML
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 41
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    Electron microprobe analyses of quenched melts (now glass), chromite, and olivine to determine the role of contamination on chromite crystallization in ultramafic magmas (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-04-15
    Beschreibung: Abstract
    Beschreibung: The data were generated in two labotories of the Dalhousie University in Halifax during a series of experiments to determine the solubility of chromite in komatiite mixed with different crustal contaminants. The experiments were designed to determine the solubility of the mineral chromite in silicate melt, with the dominant variable being the silica and iron content of the melt. After equilibrating chromite with melt at 1192-1430 degrees Celcius, samples were quenched and the composition of the chromite, quenched melt (now glass), and olivine run-products were measured for major and minor elements by electron microprobe, and the chromium concentration in the glass was measured by laser ablation ICP-MS. Analytical procedures are included in the associated data description file. The data are provided in a series of Excel worksheets containing five data tables. Table 1 is a summary of the composition of the starting materials used in experiments. Table 2 is a summary of the conditions of temperature, oxygen fugacity, experiment duration and initial sample composition. Table 3 is a summary of the major and minor element composition of the glass measured by electron microprobe and laser ablation ICP-MS. Tables 4 and 5 are summaries of the major and minor element composition of the olivine and chromite, respectively, measured by electron microprobe.
    Schlagwort(e): chromite ; chromitite ; ore deposit ; chemical element 〉 transition element 〉 chromium ; In Situ/Laboratory Instruments 〉 Probes 〉 ELECTRON MICROPROBES ; In Situ/Laboratory Instruments 〉 Spectrometers/Radiometers 〉 LA-ICP-MS
    Materialart: Dataset , Dataset
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    DATEN GFZ
  • 42
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    Mineral chemical and sulfur isotope data for precious metal mineralized rocks of the Rum layered intrusion, NW Scotland (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-04-16
    Beschreibung: Abstract
    Beschreibung: Samples of sulfide-hosted platinum-group element (PGE) mineralization from the Rum layered intrusion (NW Scotland) were studied to elucidate the crystallization history of base-metal sulfide in magmatic ore deposits. A corollary aim was to examine the controls on platinum-group mineral exsolution from sulfide in these settings. Secondary ion mass spectrometry data for sulfides reveal significant sulfur isotopic heterogeneity in all of the Rum sulfide-bearing materials studied. For example, in a PGE-rich chromitite, we find a range of δ34S exceeding 10‰ (-4.3 to +5.9‰) in base-metal sulfides within an area of 〈1 cm2. Similar ranges of δ34S heterogeneity (~10‰), albeit shifted to values as low as -15‰, are observed in disseminated sulfides in troctolite and peridotite lithologies sampled from the intrusion margins. The relatively light δ34S end member reflects crustal contamination of the Rum parental magmas (with δ34S of +1.9‰) during construction of the intrusion. We attribute the extension to relatively heavy δ34S in all samples to loss of sulfur due to sulfide breakdown at relatively low temperatures; on the basis of Rayleigh distillation modelling we estimate 〈100 °C. Degradation of primary sulfide (pyrrhotite, pentlandite and chalcopyrite) is observed in the textures of all samples, as are low sulfur phases such as chalcocite and digenite that are generally interpreted to result from low temperature oxidation processes. The chromitite sulfides have S/Se values as low as 600, also signifying sulfur loss. In situ PGE abundance measurements in sulfides from all samples indicate that desulfurization affected precious metal tenors in the chromitite sulfides more than the other samples, and there is a strong spatial pattern of PGM occurring at sulfide margins and within Fe-oxide produced by sulfide breakdown. Collectively, our new results suggest that low temperature sulfur loss, possibly as aqueous sulfate during alteration at low fluid-rock ratios, was capable of significantly modifying, but not completely erasing, primary isotopic heterogeneity in the Rum system. Aside from the effects of sulfur mobility in precious metal ore deposits, these findings highlight the micron-scale distances over which sulfur isotope heterogeneity occurs in sub-volcanic basaltic systems and show that sulfur mobility in such settings may continue to very low temperatures.
    Schlagwort(e): Platinum-group elements ; sulfur isotopes ; Rum layered intrusion ; magmatic sulfide ; chromitite ; desulfurisation ; compound material 〉 igneous material 〉 basic igneous material 〉 basic igneous rock 〉 gabbroic rock 〉 gabbro
    Materialart: Dataset , Dataset
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    DATEN GFZ
  • 43
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    Interactive webapp for exploring techno-economic landscapes of abatement options for hard-to-electrify sectors (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-04-22
    Beschreibung: Abstract
    Beschreibung: This interactive webapp reproduces the main results from an accompanying article by the same authors, which explores the most cost-efficient abatement options for the hard-to-electrify (HTE) sectors (chemical feedstocks, long-distance maritime and aviation, primary steel and cement). Some of the main assumptions used in the study can be modified here, following which a techno-economic analysis is carried out to determine the levelized cost of each product or service, for all available abatement options available. The abatement costs are then calculated, and plotted for different low-emission hydrogen and non-fossil CO2 cost assumptions, building the mitigation landscape for each HTE sector. Our results demonstrate a diverse mitigation landscape that can be categorized into three tiers, based on the abatement cost and technologies required. By requiring long-term climate neutrality through simple conditions, the mitigation landscape narrows substantially, with single options dominating each sector. For more detailed information on this study, we refer users to the Supplementary Information file provided with the study, and the original software used
    Schlagwort(e): synfuels ; climate mitigation ; hydrogen ; carbon capture and storage ; carbon capture and utilization ; chemical 〉 inorganic substance 〉 ammonia ; economy 〉 energy economics ; energy 〉 energy source 〉 renewable energy source ; environmental assessment 〉 technology assessment ; industry 〉 building materials industry 〉 cement industry ; industry 〉 chemical industry 〉 petrochemical industry ; industry 〉 metallurgical industry 〉 iron and steel industry ; physicochemical process 〉 electrolysis ; product 〉 fuel 〉 alternative fuel ; product 〉 industrial product 〉 metal product 〉 steel ; product 〉 industrial product 〉 plastic ; science 〉 materials science 〉 economics 〉 environmental economics ; transportation 〉 air transportation ; transportation 〉 water transportation 〉 maritime transport
    Materialart: InteractiveResource , InteractiveResource
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 44
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    Python Script DOuGLAS v1.0 (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-04-27
    Beschreibung: Abstract
    Beschreibung: Understanding the contemporary stress state in rock volumes is crucial for applications such as reservoir management, geothermal energy, and underground storage. Geomechanical-numerical modelling, which predicts the 3D stress state based on geological structures, density distributions, and elastic properties, requires calibration using stress magnitude data records acquired in-situ. However, these data records can include outliers—stress measurements significantly deviating from expected values due to errors or localized geological anomalies. These outliers can skew model calibrations, leading to inaccurate predictions of boundary conditions and stress magnitudes, particularly in sets with limited numbers of data records. A systematic approach to identifying and handling outliers is essential to mitigate inaccuracies. The Python-based script DOuGLAS (Detection of Outliers in Geomechanics using Linear-elastic Assumption and Statistics) was developed to address this challenge. The software is part of the FAST (Fast Automatic Stress Tensor) suite of programs. Its function is to identify outliers in sets of stress magnitude data records by assessing the respective impact of individual data records on boundary condition predictions, using iterative combinations of data records. Results are analysed through dimensionality reduction and statistical scoring, providing visual and quantitative tools for outlier detection. The script aids users in improving model reliability by identifying and addressing anomalous data. It supports sets of different numbers of stress magnitude data records and integrates seamlessly with tools such as Tecplot 360 EX and GeoStress. This manual provides a comprehensive guide for using DOuGLAS, interpreting its outputs, and understanding its application in geomechanical modeling.
    Schlagwort(e): geomechanical-numerical model ; stress ; in-situ stress ; model calibration ; stress tensor calibration ; modelling tool ; outliers detection ; model accuracy ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 NEOTECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 CRUSTAL MOTION 〉 CRUSTAL MOTION DIRECTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 FAULT MOVEMENT ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 PLATE BOUNDARIES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRESS
    Materialart: Software , Software
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 45
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    Digital Image Correlation data from experiments of releasing bend evolution within different strength wet kaolin (2025)
    GFZ Data Services
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    Publikationsdatum: 2025-05-01
    Beschreibung: Abstract
    Beschreibung: The data set includes the Digital Image Correlation (DIC) results for four experiments of releasing bends along dextral strike-slip faults that were performed at the University of Massachusetts at Amherst (USA). Gabriel et al. (in prep.) used the DIC data sets to investigate how releasing bend fault systems evolve within different strength wet kaolin. Information on the experimental set up and methods can be found in the main text and supplement to Gabriel et al. (in prep.). The data here include the incremental displacement time series, strain animation and surface elevation data at the end of the two experiments with different clay strength, which are presented within Gabriel et al. (in prep). We also include in this data repository incremental displacement time series and strain animations from two experiments that repeat the conditions of the experiments featured in Gabriel et al. (2025).
    Schlagwort(e): strike-slip deformation ; releasing bend ; off-fault defroamtion ; EPOS ; multi-scale laboratories ; analogue models of geologic processes ; analogue modelling results ; Clay ; Cohesion ; depression ; Digital Image Correlation (DIC) / Particle Image Velocimetry (PIV) ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 CRUSTAL MOTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 FAULT MOVEMENT ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRAIN ; graben ; Matlab (Mathworks) ; normal fault ; Shear box ; SLR camera ; Structure from Motion (SfM) ; tectonic process 〉 transform faulting ; tectonic setting 〉 plate margin setting 〉 transform plate boundary setting ; wrench fault ; Yield stress
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 46
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    Mo and O isotope data for Tonga-Kermadec arc lavas and DSDP site 204 sediments (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-05-05
    Beschreibung: Other
    Beschreibung: The DIGIS geochemical data repository is a research data repository in the Earth Sciences domain with a specific focus on geochemical data. The repository archives, publishes and makes accessible user-contributed, peer-reviewed research data in standardised form (EarthChem Team, 2022, https://doi.org/10.26022/IEDA/112263) that fall within the scope of the GEOROC database (https://georoc.eu). All submissions of new data will be considered for inclusion in the GEOROC database. It is hosted at GFZ Data Services through a collaboration between the Digital Geochemical Data Infrastructure (DIGIS) for GEOROC 2.0 (https://digis.geo.uni-goettingen.de) and the GFZ German Research Centre for Geosciences.
    Beschreibung: Abstract
    Beschreibung: The dataset contains Mo stable isotope compositions and concentrations as well as triple O isotope data of lavas and xenoliths from the Tonga-Kermadec arc (SW Pacific) and marine sediments drilled at the Deep Sea Drilling Project (DSDP) site 204 (Burns and Andrews, 1973).
    Schlagwort(e): Mo stable isotopes ; subduction zones ; arc lavas ; sediment recycling ; slab dehydration ; Tonga-Kermadec arc ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 CHEMICAL CONCENTRATIONS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 ISOTOPES
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 47
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    Unbekannt
    Submarine Canyon Distribution and Environmental Controls: A Global Dataset for Point Pattern Analysis (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-05-05
    Beschreibung: Abstract
    Beschreibung: This dataset supports the study "Seafloor Slopes Control Submarine Canyon Distribution: A Global Analysis", which investigates the global-scale controls on the distribution of submarine canyons. The dataset includes geospatial and environmental attributes for 2,261 submarine canyon heads located along the continental margins between 50°N and 50°S (excluding islands and regions dominated by glacial or salt tectonic processes). Each canyon head is assigned 16 variables encompassing topographic, oceanographic, lithologic, and climatic attributes of adjacent marine and terrestrial environments. These variables serve as potential predictors of canyon occurrence and were used in spatial-statistical models—including inhomogeneous Poisson point process models—to assess the influence of marine slope inclination and other factors on canyon distribution. Canyon locations are represented as point features projected onto a global network of continental slope centerlines to facilitate linear-network-based point pattern analysis. This data package includes: (1) submarine canyon locations and attributes, (2) global environmental datasets representing potential controls on canyon distribution, (3) MATLAB code for conducting point pattern analysis on linear networks, and (4) scripts for residual analysis using operational spatial count models. Together, these resources enable detailed exploration of the geomorphological and environmental factors influencing submarine canyon formation, providing a valuable foundation for research on sediment transport, continental margin evolution, and global biogeochemical cycling.
    Schlagwort(e): submarine canyons ; geomorphology ; global topography ; global bathymetry ; point pattern analysis ; EARTH SCIENCE 〉 OCEANS 〉 BATHYMETRY/SEAFLOOR TOPOGRAPHY ; EARTH SCIENCE 〉 OCEANS 〉 BATHYMETRY/SEAFLOOR TOPOGRAPHY 〉 SEAFLOOR TOPOGRAPHY ; EARTH SCIENCE 〉 OCEANS 〉 BATHYMETRY/SEAFLOOR TOPOGRAPHY 〉 SUBMARINE CANYONS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 48
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    Analytical, modeled, and imaging data of eclogitic clinopyroxene inclusions hosted in diamonds from the Cullinan Mine (South Africa) and the Rassolnaya Placer (Urals Mountains, Russia) (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-05-12
    Beschreibung: Abstract
    Beschreibung: This dataset comprises analytical, modeled, and imaging data of eclogitic clinopyroxene inclusions hosted in diamonds from the Cullinan Mine (South Africa) and the Rassolnaya Placer (Urals Mountains, Russia). Six inclusions containing varying proportions of spongy clinopyroxene (~10–100%) were selected to investigate the mechanisms of spongy clinopyroxene formation. In addition, we provide supplementary figures to Wang et al.(2025) to which these data are supplementary to. Major element compositions of the primary cores and spongy rims of clinopyroxene were analyzed using electron probe microanalysis (EPMA). Pressure–temperature conditions were estimated using conventional thermobarometry and pMELTS modeling, which was also employed to simulate partial melting of primary clinopyroxene and the compositions of resulting melts and spongy clinopyroxene. Raman spectroscopy, FTIR, and photoluminescence data were used to assess volatile contents and structural features. Back-scattered electron (BSE) imaging and CT scans provide 2D and 3D textural constraints. Data are organized into two main tables and ten supplementary tables (Tables S1–S10), which include sulfide inclusion compositions, Raman peak data, and modeling outputs. Fifteen supplementary figures (S1–S15) include BSE images, compositional variation plots, and CT scan visualizations. Two CT scan videos. All data are provided in open file formats (.xlsx, .docx, .avi), with accompanying metadata and documentation to ensure transparency and reproducibility. Data collection took place between 2023.06 and 2025.01, and no physical sampling campaign was required, as the materials were sourced from curated diamond specimens. This dataset supports the manuscript “Formation of Spongy Clinopyroxene: Insights from Eclogitic Inclusions in Diamonds” and adheres to FAIR data principles.
    Beschreibung: Methods
    Beschreibung: (1) SEM-EDS, Mineral textures and compositions were analyzed using JEOL SEM instruments with EDS detectors at University College Cork (Ireland) and the Institute of Precambrian Geology and Geochronology, RAS (Russia). (2) EPMA, Major element compositions of inclusions were determined by EPMA at the Hebrew University of Jerusalem (Israel) and the University of British Columbia (Canada). (3) Raman Spectroscopy, Raman spectra of mineral inclusions were collected using a Renishaw InVia Qontor confocal Raman microscope at University College Cork, Ireland. (4) CT-scan, X-ray micro-tomography of inclusions was performed using a ZEISS Xradia 630 Versa μCT system at the American Museum of Natural History, USA. (5) pMELTS modelling, Geochemical modelling was performed using the pMELTS 5.6.1 Excel version to simulate partial melting of clinopyroxene inclusions over a range of pressure and temperature conditions. (6) Clinopyroxene-only thermobarometry, Crystallisation pressures and temperatures were estimated using the clinopyroxene-only thermobarometers of Putirka (2008) and Jorgenson et al. (2022), based on experimentally calibrated equations and machine learning models.
    Schlagwort(e): clinopyroxene ; thermobarometry ; CT-scan ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS 〉 MINERALS
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 49
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    World Stress Map 2025 (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-05-18
    Beschreibung: Abstract
    Beschreibung: The World Stress Map (WSM) is a global compilation of information on the crustal present-day stress field. It is a collaborative project between academia and industry that aims to characterize the stress pattern and to understand the stress sources. It commenced in 1986 as a project of the International Lithosphere Program under the leadership of Mary-Lou Zoback. From 1995-2008 it was a project of the Heidelberg Academy of Sciences and Humanities headed first by Karl Fuchs and then by Friedemann Wenzel. Since 2009 the WSM is maintained at the GFZ Helmholtz Centre for Geosciences. All stress information is analysed and compiled in a standardized format and quality-ranked for reliability and comparability on a global scale. The stress map displays A-C quality stress data records of the Earth’s crust from the WSM database release 2025 (doi:10.5880/WSM.2025.001). Further detailed information on the WSM quality ranking scheme 2025, guidelines for the borehole logging data, and software for stress map generation and the stress pattern analysis is available at www.world-stress-map.org.
    Schlagwort(e): crustal stress ; in situ stress ; tectonic stress ; crustal stress pattern ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 LITHOSPHERIC PLATE MOTION 〉 PLATE MOTION DIRECTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRESS ; EARTH SCIENCE SERVICES 〉 DATA MANAGEMENT/DATA HANDLING 〉 DATA SEARCH AND RETRIEVAL ; geophysics ; tectonics
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 50
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    Unbekannt
    World Stress Map Database Release 2025 (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-05-18
    Beschreibung: Abstract
    Beschreibung: The World Stress Map (WSM) is a global compilation of information on the crustal present-day stress field. It is a collaborative project between academia and industry that aims to characterize the stress pattern and to understand the stress sources. It commenced in 1986 as a project of the International Lithosphere Program under the leadership of Mary-Lou Zoback. From 1995-2008 it was a project of the Heidelberg Academy of Sciences and Humanities headed first by Karl Fuchs and then by Friedemann Wenzel. Since 2009 the WSM is maintained at the GFZ Helmholtz Centre for Geosciences. The WSM database release 2025 contains 100,842 data records within the Earth’s crust. The data are provided in two formats: Excel-file (wsm2025.xlsx) and comma separated fields (wsm2025.csv). Data records with reliable A-C quality are displayed in the World Stress Map (doi:10.5880/WSM.2025.002). Further detailed information on the WSM quality ranking scheme 2025, guidelines for the analysis of borehole logging data, and software for stress map generation and the stress pattern analysis is available at www.world-stress-map.org. The database structure and content is explained in the WSM Technical Report TR 25-01 (https://doi.org/10.48440/wsm.2025.001).
    Schlagwort(e): crustal stress ; in situ stress ; tectonic stress ; crustal stress pattern ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 LITHOSPHERIC PLATE MOTION 〉 PLATE MOTION DIRECTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRESS ; EARTH SCIENCE SERVICES 〉 DATA MANAGEMENT/DATA HANDLING 〉 DATA SEARCH AND RETRIEVAL ; geophysics ; tectonics
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 51
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    Model data and code for the steady-state surface-elevation distribution of idealized glaciers and rivers (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-05-19
    Beschreibung: Abstract
    Beschreibung: This data publication contains: •the source codes for the 1-D finite-difference glaciofluvial model (directory "model_code"), •the model results presented in Banerjee and Scherler (2025) (directory "model_results"), •and codes to produce the plots in Banerjee and Scherler (2025) To compile and run the source codes to generate the output files presented in Banerjee and Scherler (2025), use the commands given in “run_commands.txt”. The output files from the above runs are provided in the directory "model_results". To reproduce the figures 2 & 3 in the main text of Banerjee and Scherler (2025), and figures S1, S2 & S3 in the supplementary material, use the commands given in plot_commands.txt. This requires AWK and GNUPLOT commandline tools. Figure S2 is based on a Matlab script.
    Schlagwort(e): 1-D finite-difference glaciofluvial model ; hypsometry ; glaciers ; rivers ; model ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 FLUVIAL LANDFORMS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 GLACIAL LANDFORMS ; EARTH SCIENCE SERVICES 〉 MODELS 〉 CRYOSPHERE MODELS ; EARTH SCIENCE SERVICES 〉 MODELS 〉 HYDROLOGIC AND TERRESTRIAL WATER CYCLE MODELS
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 52
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    Python script for deep learning-based extraction of road networks (2025)
    TRR228 Database (TRR228DB)
    Details
    Publikationsdatum: 2025-05-20
    Beschreibung: Abstract
    Beschreibung: This dataset includes two Python scripts for extracting road networks from topographic maps or other digital imagery. The Script is designed to automatically classify roads on multiple image files. The first script, “DeepLearning_Training.py”, creates a trained model for deep learning road extractions using ArcGIS Pro’s Multi-Task Road Extractor. The trained model can then be used in the second script, “DeepLearning_Classification.py”, to extract classified rasters using the ArcGIS Pro Classify Pixels Using Deep Learning tool. After classification, the script converts all classified tiles into polygon shapefiles and merges them into a single shapefile. The script has been used to create the historical road network of Kenya, accessible at DOI: 10.5880/TRR228DB.37. Please note: A commercial ArcGIS Pro license is required to execute these scripts.
    Schlagwort(e): Infrastructure ; Imagery/Base Maps/Earth Cover ; Road Network ; GIS ; Historical Maps ; Geodata
    Materialart: Software , Python code
    Format: OTHER
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 53
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    Database for characterization of potential sites for CO2 storage in Northern Germany (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-05-20
    Beschreibung: Abstract
    Beschreibung: The database help assess the technical feasibility questions for CO2 underground storage in North German Basin and the German North Sea region serving as a reference for “direct air capture and storage for reaching CO2 neutrality” project. The main purpose for this database was to gather uniform geological data information for characterizing depleted hydrocarbon fields and deep saline aquifers, supporting strategic decision making for pilot project to establish a direct air capture and storage demonstrator in Germany. All data collected for the database comes from public domains and therefore making it suitable for preliminary site screening and selection. However, detailed site characterization and further investigation are required for more comprehensive evaluation. For each of the identified storage sites found from previous publication and projects (Höding et al., 2009;Hystories, 2022; Poulsen et al., 2013), 9 parameters were selected for geological characterization for CO2 storage assessment, which are depth and thickness of storage formation, porosity and permeability, estimated storage capacity, caprock thickness, and reservoir integrity, as well as geothermal gradient. The determination of this parameters were generally following the instructions of International Organization for Standardization (2017), the ISO 27914:2017 standard outlines the requirements for carbon dioxide capture, transportation, and geological storage and other publications for site screening and selection instructions (Callas et al., 2022, 2023; Kim et al., 2022; Raza et al., 2016; Uliasz-Misiak et al., 2021), and further carved considering sound scientific approaches, best practice methodologies, availability of high-quality data, and in-situ storage conditions. The geological coordinates have been converted to WGS 84 / UTM zone 33N with QGIS authority projection number as European Petroleum Survey Group (32633). Most geological parameters were extracted based on TUNB model(BGR, LAGB, LBEG, LBGR, LLUR, & LUNG, 2022), additional petrophysical information were mainly collected from Müller & Reinhold, (2011), Reinhold et al., (2011) and Petroleum Geological Atlas of the Southern Permian Basin Area, (2010) projects. Additionally, this database can also serve as a valuable resource for other types of underground storage characterization.
    Schlagwort(e): CO2 storage ; site screening and selection ; geological characterization ; North German Basin ; direct air capture ; analytical hierarchy process ; saline aquifers ; depleted oil and gas fields ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOTHERMAL DYNAMICS 〉 GEOTHERMAL ENERGY ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOTHERMAL DYNAMICS 〉 GEOTHERMAL TEMPERATURE 〉 TEMPERATURE GRADIENT ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS 〉 SEDIMENTARY ROCKS 〉 SEDIMENTARY ROCK FORMATION
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 54
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    Unbekannt
    Historical road network of Kenya (1950s – 1980s) extracted from topographic maps (Version 1.2) (2025)
    TRR228 Database (TRR228DB)
    Details
    Publikationsdatum: 2025-05-21
    Beschreibung: Abstract
    Beschreibung: This dataset includes a shapefile representing the digitized historical road network of Kenya. It contains over 56,000 km of historical roads extracted from 449 historical topographic maps of 1:50,000 scale and 71 maps of 1:100,000 scale covering the time period from the 1950s to the 1980s. The topographic maps were obtained from various sources in Kenya and the UK. Most of maps were collected in Kenya provided by the Survey of Kenya and several local county governments’ survey and urban planning departments. Additionally, some maps were obtained from archives in Great Britain, namely the Bodleian Library of the University of Oxford and the Cambridge University Library. All the acquired maps were originally created and published by the Directorate of Overseas Surveys (DOS), the War Office, General Staff, Geographical Section and the Survey of Kenya. The road data was extracted from these maps using deep learning techniques, including a Python script and ArcGIS Pro “Multi-Task Road Extractor” tool. A supplementary shapefile has been included in the dataset, encompassing all regions of missing map coverage.
    Schlagwort(e): Infrastructure ; Imagery/Base Maps/Earth Cover ; Road Network ; Roads ; Geodata ; Historical Data ; Vector Data ; GIS ; Africa ; African History ; Historical Maps ; Infrastructure ; Road ; Geographic information system ; Data ; road network ; road ; data ; infrastructure development
    Materialart: Dataset , Shapefile
    Format: ESRI Shapefile
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 55
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    Nachtlichter 2021 campaign analysis software (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-05-27
    Beschreibung: Abstract
    Beschreibung: This publication contains the software and data used in the analysis presented in the paper "What’s in a Watt? Interpreting nightlights satellite data via citizen science observations". In the Nachtlichter project, citizen scientists went out at night and classified and counted light sources, reporting the data via an app. This publication contains a subset of that data, as well as software tools to compare the data to satellite data from the VIIRS DNB.
    Schlagwort(e): Artificial Light at Night ; Light Pollution ; Citizen Science ; VIIRS DNB ; Lighting ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Spectrometers/Radiometers 〉 Imaging Spectrometers/Radiometers 〉 VIIRS ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 ENVIRONMENTAL IMPACTS
    Materialart: Software , Software
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 56
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    Data on Carbon Storage in Vegetation and Soils and Environmental Predictors of Savanna Carbon Storage (2025)
    TRR228 Database (TRR228DB)
    Details
    Publikationsdatum: 2025-06-02
    Beschreibung: Other
    Beschreibung: This file contains data on carbon storage in woody vegetation and soils, as well as predictors used for modelling carbon storage. 〈p〉This data is made available as an addendum to the following publication: 〈br〉L. Kindermann, A. Sandhage-Hofmann, W. Amelung, J. Börner, M. Dobler, E. Fabiano, M. Meyer, A. Linstädter (2025) Natural and human disturbances have non-linear effects on whole-ecosystem carbon storage in an African savanna; Global Change Biology, 31: e70163. 〈a href="https://doi.org/10.1111/gcb.70163"〉https://doi.org/10.1111/gcb.70163〈/a〉.〈br〉 Data contained in this file was collected under project "A01: Future Carbon Storage" within collaborative research centre "CRC Future Rural Africa".〈br〉 Research and data collection were funded by German Research Foundation (DFG) under funding codes CRC TRR-228/1 and CRC TRR-228/2.〈br〉 Permission for research has been granted by the Namibian National Commission on Research Science and Technology (NCRST), permit number RPIV00362018.〈/p〉
    Beschreibung: Abstract
    Beschreibung: This file contains two data sheets: 〈p〉&039;Info&039; sheet contains general information on the dataset, as well as units of measurement and descriptions for all variables and columns of the data.〈/p〉 〈p〉&039;df&039; contains the actual data.〈/p〉 〈p〉For units and explanations see &039;Info&039; sheet; skip top 6 lines of &039;df&039; for reading raw data as those first lines contain meta information on where each variable was used within original publication: Kindermann et al. (2025) Natural and human disturbances have non-linear effects on whole-ecosystem carbon storage in an African savanna. Global Change Biology, Vol31/4; e70163; 〈a href="https://doi.org/10.1111/gcb.70163"〉https://doi.org/10.1111/gcb.70163〈/a〉.〈/p〉
    Schlagwort(e): Ecology ; Biota ; Carbon ; Carbon Storage Dynamics ; Vegetation ; Vegetation Structure ; Land Use Change ; Soil Organic Carbon ; Biomass ; Soil Fertility ; Ecosystem ; Soil Carbon
    Materialart: Dataset , Primary Data
    Format: MS Excel
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 57
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    Cathodoluminescence zoning images of Lower El Cajete quartz and sanidine crystals, Valles Caldera, New Mexico, USA (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-06-04
    Beschreibung: Abstract
    Beschreibung: The Valles Caldera, New Mexico, USA was created by two caldera-forming eruptions at ~1.6 and ~1.1 Myr. Since then, post-caldera activity has consisted of lava domes, lava flows, large explosive phases, and a hydrothermal system active today. Possibly the youngest eruption sequence, El Cajete, was emplaced 74.4 ± 1.3 ka (Zimmerer et al., 2016) and began with pyroclastic surges, followed by pyroclastic density currents (PDCs) and pumice-rich Plinian pyroclastic fall (Self et al., 1988). The objective of this project was to characterize crystal grains from the early El Cajete sequence, in terms of morphology and textures, using scanning electron microscopy (SEM). The early El Cajete differs from the later part of the sequence in its greater stratigraphic and lithologic complexity, having been formed from not only pyroclastic fall (like the later El Cajete) but also surge beds and PDCs. This dataset was collected under the national open access action at Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa SEM/EDS facility supported by WP3 ILGE – MEET project, PNRR – EU Next Generation Europe program, MUR grant number D53C22001400005. This allowed me to obtain the present dataset of 31 cathodoluminescence (CL) images of 30 quartz crystals and one sanidine crystal.
    Schlagwort(e): EPOS ; multi-scale laboratories ; geochemistry and microscopy ; volcanology ; quartz ; sanidine ; cathodoluminescence ; SEM ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS 〉 IGNEOUS ROCKS
    Materialart: Image , Image
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 58
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    Python Script DOuGLAS v1.0 (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-06-10
    Beschreibung: Abstract
    Beschreibung: Understanding the contemporary stress state in rock volumes is crucial for applications such as reservoir management, geothermal energy, and underground storage. Geomechanical-numerical modelling, which predicts the 3D stress state based on geological structures, density distributions, and elastic properties, requires calibration using stress magnitude data records acquired in-situ. However, these data records can include outliers—stress measurements significantly deviating from expected values due to errors or localized geological anomalies. These outliers can skew model calibrations, leading to inaccurate predictions of boundary conditions and stress magnitudes, particularly in sets with limited numbers of data records. A systematic approach to identifying and handling outliers is essential to mitigate inaccuracies. The Python-based script DOuGLAS (Detection of Outliers in Geomechanics using Linear-elastic Assumption and Statistics) was developed to address this challenge. The software is part of the FAST (Fast Automatic Stress Tensor) suite of programs. Its function is to identify outliers in sets of stress magnitude data records by assessing the respective impact of individual data records on boundary condition predictions, using iterative combinations of data records. Results are analysed through dimensionality reduction and statistical scoring, providing visual and quantitative tools for outlier detection. The script aids users in improving model reliability by identifying and addressing anomalous data. It supports sets of different numbers of stress magnitude data records and integrates seamlessly with tools such as Tecplot 360 EX and GeoStress. This manual provides a comprehensive guide for using DOuGLAS, interpreting its outputs, and understanding its application in geomechanical modeling.
    Schlagwort(e): geomechanical-numerical model ; stress ; in-situ stress ; model calibration ; stress tensor calibration ; modelling tool ; outliers detection ; model accuracy ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 NEOTECTONICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 CRUSTAL MOTION 〉 CRUSTAL MOTION DIRECTION ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 FAULT MOVEMENT ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 PLATE BOUNDARIES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRESS
    Materialart: Software , Software
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 59
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    IGG-SLR-DORIS: Monthly gravity field solutions from SLR and DORIS (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-06-12
    Beschreibung: Abstract
    Beschreibung: IGG-SLR-DORIS is a series of GRACE-like gravity field solutions going back to 1984 based on tracking data to up to 16 satellites, observed either by satellite laser ranging (SLR) or by means of the Doppler Orbitography and Radiopositioning Integrated by Satellites (DORIS) system. The match with GRACE in spatial resolution is achieved by representing the gravity field by empirical orthogonal functions (EOFs) obtained by a principal component analysis of the GRACE/GRACE-FO solutions. To make the modelling more adaptive, the EOFs are supplemented by low-degree spherical harmonics. IGG-SLR-DORIS is intended to replace the previously released IGG-SLR-HYBRID solution which applied the same parametrization. It could be shown that the combined SLR/DORIS solution is clearly superior, reducing the average difference to the GRACE/GRACE-FO fields by 10.6 percent. As another enhancement, the beginning of the time series was advanced by eight years by extending the analysis to historical SLR data. The time series now also includes a degree-1 solution based on an own inversion approach and using the surface mass distribution from the SLR/DORIS fields.
    Schlagwort(e): SLR ; DORIS ; monthly gravity field model ; geodesy ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEODETICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GRAVITY/GRAVITATIONAL FIELD
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 60
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    Unbekannt
    Soils, woody plants and farm-household wealth: Context-specific links in Southern Africa (2025)
    TRR228 Database (TRR228DB)
    Details
    Publikationsdatum: 2025-06-16
    Beschreibung: Abstract
    Beschreibung: Smallholder farmers in Southern Africa cope with low soil fertility and challenging field maintenance. We analysed links between household wealth, cropland soil quality, and field management (fertilization, field clearing) in Zambia and Namibia. We hypothesised that wealthier farmers cultivate higher-quality land because of preferential access, greater resources, and better field management. This pattern holds only partly. In Zambia, homogeneity of inherent soil properties limits disparities in land distribution and soil quality across wealth classes. Higher yields among wealthier farmers were primarily attributable to soil fertility management rather than differences in inherent soil quality. In Namibia, natural soil heterogeneity contributed to unequal land distribution, with wealthier households farming inherently better soils with higher clay, silt, and organic carbon contents. However, these households invested less in field management; thus, higher soil fertility did not result in higher yields. Among wealthy households, off-farm income appears to decouple agricultural productivity from land quality and management.
    Schlagwort(e): Agriculture ; Farming ; Soil Fertility ; Farm Household ; Management ; Vegetation
    Materialart: Dataset , Microsoft excel file
    Format: MS Excel
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 61
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    Unbekannt
    Mechanical data of rotary shear experiments in bituminous dolostones (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-06-16
    Beschreibung: Abstract
    Beschreibung: Mirror-like Surfaces (MSs) are ultra-polished fault surfaces widespread in carbonate seismic terrains, but their formation process is still debated. We deformed gouge samples from exposed fault surfaces hosted in bituminous dolostone rocks in a rotary shear apparatus (SHIVA) at seismic slip rates (1 m/s). By changing the water availability (water-pressurised and room-humidity conditions) and the organic matter/dolomite content (〉 35%, dark gouge DG; 〈 30% bright gouge BG) we investigated the mechanical behaviour leading to MSs formation in fault gouges. We run tests at 15 MPa effective normal stress, 2 MPa confinement and 1 MPa pore pressure for the water-pressurised experiments and a total displacement of 0.13 m. Mirror-like fault surfaces were obtained in all successful experiments; mirrors were more developed under room-humidity conditions. Bituminous dolostones under room-humidity conditions had a slip neutral behaviour with a low friction (0.3). Bituminous dolostones under water-pressurised conditions showed a slip weakening behaviour with an initial peak effective friction μp = 0.65, followed by a drop to effective friction μss DG than in BG (i.e., μss of 0.25 vs 0.28). Future work will focus on the microstructural analysis of the experimental products and the investigation of the slip behaviour of bituminous dolostones at sub-seismic slip rates for a complete study of the slip behaviour spectra. This publication results from work conducted under the national open access action at SHIVA (Slow to High Velocity Apparatus) - HP-HT laboratory of experimental Volcanology and Geophysics (INGV, Roma 1 section) supported by WP3 ILGE - MEET project, PNRR - EU Next Generation Europe program, MUR grant number D53C22001400005.
    Schlagwort(e): EPOS ; multi-scale laboratories ; rock and melt physical properties ; Friction ; Powder Mixture ; Rotary Shear ; Strain gauge ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS 〉 SEDIMENTARY ROCKS ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS 〉 SEDIMENTARY ROCKS 〉 SEDIMENTARY ROCK PHYSICAL/OPTICAL PROPERTIES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 PLATE TECTONICS 〉 STRAIN
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 62
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    Unbekannt
    On-shore data of the amphibious part of the refraction-seismic project INGON in and around Sri Lanka (RV SONNE cruise SO258/2) (2025)
    GFZ German Research Center for Geosciences
    Details
    Publikationsdatum: 2025-06-20
    Beschreibung: Abstract
    Beschreibung: In July and August 2017, off-shore seismic measurements have been carried out south of Sri Lanka as part of the INGON project. Main aim of this part of the project was to study the deep structure of the continent-ocean transition south of Sri Lanka and the early plate drift of India and Sri Lanka. The marine profile was extended by 15 seismic stations on-shore Sri Lanka, of which the data is contained in this data publication (land observations of airgun sources). This dataset consists of the raw (continuous) data of the land recorders (in proprietary cube and MSEED formats) and the shot records (airgun sources) in SEGY-format (standard exchange format).
    Schlagwort(e): Deep Seismic Sounding ; Ocean-Continent transition ; amphibious seismic project ; Sri Lanka ; AMPHIBIOUS ; CONTROLLED_SOURCE_SEISMOLOGY 〉 AIRGUN_SOURCE ; CONTROLLED_SOURCE_SEISMOLOGY 〉 CRUSTAL_SCALE ; CONTROLLED_SOURCE_SEISMOLOGY 〉 DSS ; CONTROLLED_SOURCE_SEISMOLOGY 〉 RAW_DATA ; CONTROLLED_SOURCE_SEISMOLOGY 〉 REFRACTION ; CONTROLLED_SOURCE_SEISMOLOGY 〉 REGIONAL_SCALE ; CONTROLLED_SOURCE_SEISMOLOGY 〉 WIDE-ANGLE_REFLECTION_REFRACTION ; MINISEED_DATA_FORMAT ; SEG-Y_DATA_FORMAT ; SEISMIC_WAVEFORM_DATA ; SENSOR 〉 GEOPHONE ; SENSOR 〉 VERTICAL_COMPONENT ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 SEISMIC PROFILE
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 63
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    Unbekannt
    Spatial counterfactuals of the July 2021 flood in the Ahr valley, Germany (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-06-24
    Beschreibung: Abstract
    Beschreibung: This dataset comprises gridded precipitation fields, simulated hourly discharge values and simulated inundation areas and depths in the Ahr catchment in Germany for the reference scenario of the July 2021 flood and 25 spatial counterfactuals. The precipitation dataset contains the observed gridded E-OBS precipitation field and 25 counterfactuals shifted by one cell. Subsequently, the reference scenario and spatial counterfactuals are used as atmospheric forcing for the mesoscale hydrological model mHM set up and calibrated for the Ahr catchment, Germany. The model simulates hourly discharge series at seven gauge locations (Müsch, Kirmutscheid, Niederadenau, Denn, Kreuzberg, Altenahr, Bad Bodendorf) from which the event peak flows and flood event volumes can be derived. These discharge data is used as boundary condition for the RIM2D hydrodynamic inundation model which simulates inundation areas and maximum inundation depths along the Ahr valley between Müsch and Sinzig for the reference scenario and spatial counterfactuals.
    Schlagwort(e): Ahr flood 2021 ; inundation ; counterfactuals ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 NATURAL HAZARDS 〉 FLOODS ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 GROUND WATER 〉 GROUND WATER DISCHARGE/FLOW ; In Situ/Laboratory Instruments 〉 Gauges
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 64
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    Unbekannt
    Analogue modeling results showing fault network evolution during multiphase triaxial strain (2025)
    GFZ Data Services
    Details
    Publikationsdatum: 2025-06-24
    Beschreibung: Abstract
    Beschreibung: This data set includes the results of high-resolution digital image correlation (DIC) analysis and digital elevation models (DEM) applied to analogue modelling experiments (Table 1). Six generic analogue models are extended on top of a rubber sheet. In Series A, as extension velocity increases, the initial biaxial plane strain condition evolves into triaxial constrictional or intermediate strain. Models A1 and A2 are two-phase models and Model A3 is a three-phase model. Conversely, in Series B, as extension velocity decreases, the model starts with triaxial constrictional strain and ends up with biaxial plane or intermediate triaxial strain. Models B1and B2 are two-phase models and Model B3 is a three-phase model. Detailed descriptions of the experiments can be found in Liu et al. (2025) to which this data set is supplement. The data presented here are visualized as topography, the horizontal cumulative surface strain, and incremental profiles.
    Schlagwort(e): anlogue modelling ; multiphase triaxial and biaxial strain ; the evolution of fault networks ; EPOS ; multi-scale laboratories ; analogue models of geologic processes ; analogue modelling results ; EARTH SCIENCE ; Formation of the earth ; In Situ/Laboratory Instruments
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 65
    facet.materialart.
    Unbekannt
    Soil moisture response, stable water isotope profiles, and trinary images of vertical subsurface flow paths across the evolution of siliceous and calcareous soil in proglacial areas (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-01-22
    Beschreibung: Abstract
    Beschreibung: The data set was collected to identify hydrological processes and their evolution over it time. It consists of several individual files in tabstop delimeted text format. The data set contains the data obtained from deuterium and brilliant blue tracer experiments at two chronosequence studies in the glacier forefield of the Stone Glacier and the Griessfirn in the central Alps, Switzerland. Each chronosequence consisted of four moraines of different ages (from 30 to 13500 years). At each forefield sprinkling experiments with deuterium and dye tracer experiments with blue dye (Brilliant Blue) were conducted on three plots per moraine. The moraines at the forefield of the Stone Glacier developed from siliceous parent material and at the forefield of the Griessfirn from calcareous parent material. Data from the siliceous forefield are marked with (S) and data from the calcareous forefield are marked with (C). The data set consist of soil moisture time series and soil water isotope profiles of the sprinkling experiments with deuterium, as well as trinary images of stained vertical subsurface flow paths from the dye tracer experiment. The individual plots per moraine are distinguished via their position relative to one another on the moraine (left, middle, and right, looking upslope). The plots used for the sprinkling experiments were located in close vicinity to the plots used for the dye tracer experiments. For the sprinkling experiments with deuterium each plot (4m x 6m) per age class was equipped with 6 soil moisture sensors. Three of these sensors were installed as a sensor profile at one side of the plot about one meter downslope from the upper plot boundary. The sensors were installed at 10, 30, and 50 cm soil depth. On the other side of the plot, two sensors were placed in 10 cm depth, one opposite to the sensor profile and the second sensor one meter upslope from the lower plot boundary. The sixth sensor was placed at 10 cm depth in the center of the plot. The plots were irrigated on three consecutive days with three different irrigation intensities and deuterium concentrations. Per forefield, the soil moisture data are listed in one file per age class. The file contains for each plot, the time stamp and the soil moisture values of the 6 sensors.
    Schlagwort(e): Landscape Evolution ; Chronosequence Study ; Proglacial moraines ; Flow paths ; Soil moisture ; EARTH SCIENCE 〉 AGRICULTURE 〉 SOILS 〉 SOIL MOISTURE/WATER CONTENT ; EARTH SCIENCE 〉 LAND SURFACE 〉 LANDSCAPE 〉 LANDSCAPE PROCESSES ; EARTH SCIENCE 〉 LAND SURFACE 〉 SOILS 〉 SOIL INFILTRATION
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 66
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    Unbekannt
    Long-term CO2 and CH4 flux measurements and associated environmental variables from a rewetted peatland (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-01-29
    Beschreibung: Abstract
    Beschreibung: The data provided here is an exemplary dataset for the flux site Zarnekow from one year (2018). The complete dataset that is needed to run the codes for all the years can be obtained from the European Fluxes Database Cluster under site ID DE-Zrk (Sachs et al., 2016) or provided upon request. This repository is intended to provide the necessary MATLAB and R code to reproduce the results by Kalhori et al. (2024). The data are provided as zip folder containing (1) a csv file with associated definition of variables and units (file: 2023-004_Kalhori-et-al_README_2018_units.txt), (2) a shapefile (file: 2023-004_Kalhori-et-al_2018_LAiV_DOP.shp) and (3) a Geotiff (file: 2023-004_Kalhori-et-al_2018_LAiV_DOP.tiff). In addition, we provide a second zip folder containing the data that produced the figures of the related article (Kalhori et al., 2024, https://doi.org/10.1038/s43247-024-01226-9).
    Schlagwort(e): carbon dioxide emission ; CO2 emission ; methane emission ; CH4 emission ; peatland ; wetland ; eddy covariance ; rewetting ; emission factor ; mitigation ; EARTH SCIENCE 〉 BIOSPHERE 〉 TERRESTRIAL ECOSYSTEMS 〉 WETLANDS 〉 PEATLANDS ; In Situ Land-based Platforms 〉 GROUND-BASED OBSERVATIONS
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 67
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    Unbekannt
    Acoustic Emission and Seismic moment tensor catalogs associated with triaxial stick-slip experiments performed on Westerly Granite samples (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-01-29
    Beschreibung: Abstract
    Beschreibung: The dataset contains source parameters of acoustic emission (AE) events recorded during triaxial friction (stick-slip) experiments performed on the Westerly Granite sample WgN05. In addition we provide raw waveform data of AE events recorded in triggered mode with a network of 16 AE sensors. Basic seismic catalog associated with the stick-slip experiment contains origin time, hypocentral location in local Cartesian coordinate system of the sample (with associated uncertainties), and AE-derived magnitude. In addition, for a subset of AEs we provide full moment tensors. This catalog include information on fault parameters (strike, dip and rake of the two nodal planes), percentage of isotropic, compensated linear vector dipole and double-couple components of the full moment tensor, P, T, B axes orientations in the coordinate system of the sample, uncertainty assessment, as well as the six independent moment tensor components. Finally, we provide a time series of axial stress values as presented in the Kwiatek et al. (2023) as well as the coordinates of the AE sensors. The catalog and parametric data is supplemented with the raw waveform recordings stored in HDF5 format from 16 acoustic emission sensors placed on the surface of the sample.
    Schlagwort(e): acoustic emission ; rock mechanics ; earthquake precursors ; stick-slip ; earthquake preparation ; seismomechanics ; intermittent criticallity ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 EARTHQUAKE OCCURRENCES ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 EARTHQUAKE PREDICTIONS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 SEISMIC PROFILE 〉 SEISMIC BODY WAVES ; hazard ; hazard 〉 natural hazard ; monitoring 〉 seismic monitoring ; physical property 〉 inversion ; physical property 〉 pressure ; physical property 〉 rock mechanics
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 68
    facet.materialart.
    Unbekannt
    Rewetted Peatland_GHG analysis Code: software packages (R and Matlab) for the calculation of greenhouse gas (GHG) fluxes at a rewetted peatland (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-01-29
    Beschreibung: Abstract
    Beschreibung: This publication provides the codes produced for the article "Temporally dynamic carbon dioxide and methane emission factors for rewetted peatlands. Nature Communications Earth and Environment" by Aram Kalhori, Christian Wille, Pia Gottschalk, Zhan Li, Josh Hashemi, Karl Kemper, and Torsten Sachs (https://doi.org/10.1038/s43247-024-01226-9). In the article, the authors estimate the cumulative GHG emissions of a rewetted peatland in Germany using the long-term ecosystem flux measurements. They observe a source-to-sink transition of annual carbon dioxide (CO2) fluxes and decreasing trend of methane (CH4) emissions. This software is written in R and MATLAB. Running the codes ([R files and .m files](Code)) and loading the data files ([CSV files and .mat files](Data)) requires the pre-installation of [R and RStudio] (https://posit.co/downloads/) and ([MATLAB]. The RStudio 2022.07.2 Build 576 version has been used for the R scripts. The land cover classification work was performed in QGIS, v.3.16.11-Hannover. Data were analyzed in both MATLAB and R and plots created with R (R Core Development Team 2020) in RStudio®. The following external packages are required to be incorporated into the codes in order to run the provided codes: "zyp" package; "missForest" package;"REddyProc" package and explained in detail in the README. Files: Codes/Kalhori2023_SenSlopes_fig2.r "zyp" package, Maintainer David Bronaugh 〈bronaugh@uvic.ca〉 Depends R (〉= 2.4.0), Kendall License: LGPL-2.1 https://CRAN.R-project.org/package=zyp Files: Codes/Kalhori2023_gapfillingMF_validation_figSI1.r "missForest" package, Maintainer Daniel J. Stekhoven 〈stekhoven@stat.math.ethz.ch〉 Depends randomForest,foreach,itertools License: GPL (〉= 2) https://www.r-project.org, https://github.com/stekhoven/missForest Files: Codes/Kalhori2023_NEEpartitioning.r "REddyProc" package, Maintainer Thomas Wutzler 〈twutz@bgc-jena.mpg.de〉 Depends R (〉= 3.0.0), methods Imports Rcpp, dplyr, purrr, rlang, readr, tibble, magrittr, solartime, bigleaf (〉= 0.7) License: GPL (〉= 2) https://cran.r-project.org/web/packages/REddyProc/index.html Data are provided as .shp, CSV or text files. The MATLAB scripts for footprint calculation and the R scripts used for gapfilling (missForest) and flux partitioning (REddyProc) are also included.The full description of the data and methods is provided in the manuscript.
    Beschreibung: Other
    Beschreibung: GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2023 Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany (Aram Kalhori). Kalhori2023_Rewetted Peatland_GHG Analysis is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see 〈https://www.gnu.org/licenses/〉.
    Schlagwort(e): carbon dioxide emission ; CO2 emission ; methane emission ; CH4 emission ; peatland ; wetland ; eddy covariance ; rewetting ; emission factor ; mitigation ; EARTH SCIENCE 〉 BIOSPHERE 〉 TERRESTRIAL ECOSYSTEMS 〉 WETLANDS 〉 PEATLANDS ; In Situ Land-based Platforms 〉 GROUND-BASED OBSERVATIONS
    Materialart: Software , Software
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 69
    facet.materialart.
    Unbekannt
    Soil and spring water gas data from an area with natural hydrogen (H2) degassing, NW Pyrenean foreland, France (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-01-30
    Beschreibung: Abstract
    Beschreibung: This data set contains the results from a 2023 GFZ Innovative Research Expedition project to explore for natural hydrogen gas (H2) occurrences in the NW Pyrenean foreland, near the town of Biarritz in France. The data represent in-situ measurements of soil and spring water gas, as well as in-situ spring water property measurements, complemented with laboratory analysis results of gas contents and noble gas isotopic compositions of gas and spring water samples collected during the expedition. This GFZ Innovative Research Expedition was inspired by previous exploration efforts in the region by Lefeuvre et al. (2021, 2022). These authors detected elevated concentrations of natural H2 gas in the soil and interpreted this natural H2 to be derived from serpentinizing mantle rocks below the Pyrenees. The main aims of this expedition were the following: (1) in-situ measuring soil gas contents and taking soil gas samples for laboratory analysis at a site near the town of Peyrehorade in the NW of the general study area of Lefeuvre et al. (2021), thus improving the soil gas data coverage along the NW end of the North Pyrenean Frontal Thrust (NPFT); (2) taking gas samples from degassing springs (or water samples from non-degassing springs to be degassed in the lab) in the general Lefeuvre et al. (2021) study area for additional laboratory analysis of gas contents and noble gas isotopic compositions, which may be indicative of (deep) gas origins; and (3) performing a detailed soil gas analysis by means of a portable mass spectrometer at Sauveterre-de-Béarn, a site along the NPFT where Lefeuvre et al. (2022) measured elevated concentrations of natural H2 in the soil. Furthermore, we also measured the properties of the visited springs (temperature, pH, conductivity) while on site, and performed additional in-situ soil gas measurements from manual drillholes. Details on the measurement and sampling methods, on the laboratory analyses, as well as the results of these measurements and analyses are provided in the data description file The expedition involved six field days in July 2023, during which a total of 26 sites were visited. These sites were selected for their vicinity near a major geological contact or fault zone that could have facilitated upward circulation of gas or (thermal) water from the (deep) subsurface (i.e., potentially from the mantle).
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 70
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    Unbekannt
    CRM-geothermal - geochemical results of drill core material, scaling and salt precipitates at Tuzla, Seferihisar and Dikili geothermal sites, Eastern Turkey (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-01-30
    Beschreibung: Abstract
    Beschreibung: The EU funded project CRM-geothermal aims to establish an overview of the potential for critical raw materials (CRM) in geothermal fluids across the EU and third countries (Ref). Within this framework, the geothermal sites of Tuzla, Seferihisar and Dikili in eastern Turkey have been visited in March 2023. To estimate the potential of CRM at these sites, a comprehensive sampling program was performed. Rock samples (drill gravel) of the production borehole and scaling from gas-water separators were obtained. Furthermore, sampling of geothermal fluids (gas and brine) and precipitates (salt) along the production line was performed. Here, the results of the geochemical analyses of solid sample materials (drill gravel, scales and salt) are presented. All analyses were performed in the ElMiE-Lab (Elements and Minerals of the Earth Laboratory) at German Research Centre for Geosciences Potsdam, Germany (https://labinfrastructure.geo-x.net/laboratories/8). For their major and minor element compositions, bulk samples of drill gravel and scales were analyzed with XRF and ICP-MS, respectively. Salt precipitates were analyzed for dry loss and mineral composition using XRD.
    Beschreibung: Methods
    Beschreibung: Sampling of drill gravel: Drill core gravel from Tuzla geothermal site was obtained from existing samples taken during drilling in 2010. For the analyses, three samples of the geothermal reservoir horizon at different depth and from two different drill holes were chosen. Sampling of scales: Scales were sampled during geothermal power plant maintenance in 2023 in Tuzla and in 2022 in Seferihisar. It was analyzed from all water-gas separators from the three drill holes in Tuzla. For Seferihisar, fresh scales were obtained from inside a tube, a pump and a fitter. Sampling of salt precipitates: During the visits, fresh salt precipitates were taken from outside the pipeline that transports geothermal brine to the power plant. The sampling points were located near the production well. Here, few connectors were slightly leaking which is negligible for the geothermal power production. Over time, the small amounts of brine release causes salt precipitation, due to brine cooling and evaporation. The residual salts occurs in form of fine crystalline precipitations around the pipe connectors or, stalactite-like salt tubings. Sampling of fresh, slightly moist material was performed by either scratching material off the precipitate deposit or breaking off juvenile stalactite outgrowth. The sample were stored and transported in air-tight zipper plastic bags to avoid sample alteration by atmospheric air.
    Schlagwort(e): critical raw materials ; geothermal power plant eastern turkey ; drill gravel ; scales ; salt precipitates ; geochemistry ; XRF ; ICP-MS ; XRD ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 ECONOMIC RESOURCES 〉 ENERGY PRODUCTION/USE 〉 GEOTHERMAL ENERGY PRODUCTION/USE ; energy 〉 energy type 〉 non-conventional energy 〉 geothermal energy ; Models/Analyses 〉 CRM
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 71
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    Unbekannt
    Transient 3D groundwater and temperature model of the North German Basin below the State of Brandenburg (1953-2014) (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-02-06
    Beschreibung: Abstract
    Beschreibung: The dataset is the basis for describing a 60-year-long evolution of groundwater dynamics and thermal field in the North German Basin beneath the Federal State of Brandenburg (NE Germany), covering the period between 1953 and 2014 with monthly increments. It was produced by one-way coupling of a near-surface distributed hydrologic model to a 3D basin-scale thermohydraulic groundwater model with the goal of investigating feedbacks between climate-driven forcing (in terms of time- and space-varying recharge and temperature), basin-scale geology, and topographic gradients. Modeled pressure and temperature distributions are validated against published groundwater level and temperature time series from observation wells. Our results indicate the spatio-temporal extent of the groundwater system subjected to nonlinear interactions between local geological variability and climate conditions. The dataset comprises of input files and scripts required to run the groundwater model in GOLEM and output files from the transient thermo-hydraulic simulations in EXODUS format. The input and output data is organized as separate archived folders (*.gz format).
    Beschreibung: Methods
    Beschreibung: Hydrological fluxes are simulated via mesoscale Hydrological Model (mHM) (Samaniego et al., 2010), a spatially distributed hydrologic modeling tool. We make use of the results from a Germany-wide realization of mHM to derive time and space varying water fluxes, which we translate into boundary conditions at the top of our groundwater model. All groundwater simulations were conducted with GOLEM, a Finite Element Method (FEM) modelling platform for thermal-hydraulic-mechanical and non-reactive chemical processes in fully-saturated porous media (Cacace and Jacquey, 2017). Steady-state conditions were derived by solving separately for the hydraulic and the thermal cases. These uncoupled steady-state simulations have been used as initial conditions to run a coupled pseudo-transient simulation, the results of which have been later imposed to initialize the pore pressure and the temperature in the final transient simulation.
    Beschreibung: TechnicalInfo
    Beschreibung: The dataset comprises of output fluxes from the hydrological model, input files and scripts required to run the groundwater model, output files from the transient thermo-hydraulic simulations, references to validation data, and workflows for data pre-conditioning and post-processing. The 3D structural model built for groundwater modeling covers an area of 28800 km2, extends down to 6000 m below sea level, and contains 12 stratigraphic units from pre-Permian to Quaternary. It was built using structural surfaces from an earlier basin-scale structural model of Brandenburg (Noack et al., 2013). The model captures large-scale geological features controlling the regional groundwater flow, including salt structures, permeable glacial valleys, and aquitard discontinuities. The simulated finite element mesh has a resolution of 1 km x 1 km. It is divided into 54 computational layers and consists of 1.9 million nodes, giving a total of 3 million degrees of freedom.
    Schlagwort(e): groundwater modeling ; groundwater level ; geothermal potential ; groundwater recharge ; mesoscale Hydrologic Model (mHM) ; North German Basin ; Brandenburg ; climate ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 GROUND WATER 〉 PERCOLATION ; hydrosphere 〉 water (geographic) 〉 groundwater
    Materialart: Dataset , Dataset
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    DATEN GFZ
  • 72
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    High resolution Digital Terrain Models (DTMs) of Tillandsiales in the Chilean Atacama Desert: The Arica study field. (2024)
    CRC1211 Database (CRC1211DB)
    Details
    Publikationsdatum: 2024-02-21
    Beschreibung: Abstract
    Beschreibung: A high-resolution Digital Terrain Model (DTM) has been processed for the Tillandsia landbeckii study sites at Arica. The original source data have been obtained from drone flight images. The final resolution of the DTM is of about 14 cm. We acknowledge support in the field and during data processing from Alexander Siegmund (PH Heidelberg). RE Stein and D Jäger contributed equally to the work.
    Beschreibung: TableOfContents
    Beschreibung: The zip.file contains the following 5 files: 1) Arica.blend 2) Arica_Ortho_clipped_0-5res.tif 3) DEM_Arica_final_clipped_rescale2.tif 4) DEM_Arica_final_clipped_rescale2_0-5res_raw.tif 5) DEM_Arica_final_clipped_rescale2_0-5res_rendered.tif Please do not change file names nor file extensions when loading files for viewing in BLENDER version 4.0 (https://www.blender.org/download/releases/4-0/). The "0-5res" file-versions refer to a 0.5m/px resolution (EPSG:32719 - WGS 84 / UTM Zone 19S). File DEM_Arica_final_clipped_rescale2.tif was processed to a final resolution of 1.35e-06 °degrees (c. 0.143 m) [EPSG:4326 - WGS 84].
    Beschreibung: Other
    Beschreibung: Short introduction into the methods: Very-high resolution images were captured using an unmanned aerial vehicle (UAVs) [drone: DJI Matrice 200; DJI Zenmuse X5S RGB camera]. With processing of the UAV data images are merged according to their geographical position by means of the Structure-from-Motion (SfM) algorithm and a digital elevation model was created (Micheletti et al. 2015; Westoby et al. 2012). High-resolution topographic surveying using the Structure-from-Motion (SfM) algorithm is a low-cost and user-friendly photogrammetric technique to obtain high-resolution datasets. The SfM method solves the camera pose and scene geometry simultaneously and automatically, using highly redundant bundle adjustment based on matching features in multiple overlapping, offset images (Westoby et al. 2012). SfM-Processing was performed using Agisoft Metashape Professional (Version 1.6.1 64 bit). Agisoft Metashape Professional performs well to reconstruct landscape 3D point clouds and the different steps of the process are configurable and can be controlled (Laporte-Fauret et al. 2019). Images were fed into the software and the quality (tool “estimate image quality”) and position was determined respectives images were chosen to cover the study area. Using the “Aling Photos” tool images were aligned creating tie points (2D) and a Depth Maps (high quality, mild filtering) was created (3D). With the help of the Build Dense Cloud tool, set to high quality, the data points were created that represent the study area in 3D. Consecutively an orthomosaic of the study area was created using the Build Orthomosaic tool. An orthomosaic is a photogrammetrically orthorectified image product that has been mosaicked from a collection of images and corrected for geometric distortion to create a seamless mosaic dataset. Due to the high-resolution input data and the processing without compression a high-resolution orthomosaic was achieved with a pixel size of 2.1 cm/pix covering the study area. This detailed, high-resolution geolocated photo representation of the study site is the basis for the following analytical steps. A digital elevation model (DEM) was computed using the “Build DEM” tool. Its dimensions resulted herein in a 14 cm/pix size to cover the entire study site. Final adjustment of elevation has been done using the Copernicus Digital Elevation Model (https://spacedata.copernicus.eu/de/collections/copernicus-digital-elevation-model) using Q-GIS (https://www.qgis.org/de/site/). Laporte-Fauret, Q., et al. (2019). "Low-Cost UAV for high-resolution and large-scale coastal dune change monitoring using photogrammetry." Journal of Marine Science and Engineering 7(3): 63. Micheletti, N., Chandler, J. H., & Lane, S. N. (2015). Structure from motion (SFM) photogrammetry. In L. E. Clarke, & J. M. Nield (Eds.), Geomorphological techniques (Online Edition) (pp. 1–12, Chapter 2.2.2). British Society for Geomorphology Westoby, M. J., et al. (2012). "‘Structure-from-Motion’photogrammetry: A low-cost, effective tool for geoscience applications." Geomorphology 179: 300-314.
    Schlagwort(e): Biota ; Landscape Evolution ; Biodiversity
    Materialart: Dataset , Sub data for DTM configuration
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 73
    facet.materialart.
    Unbekannt
    High resolution Digital Terrain Models (DTM) of Tillandsiales in the Chilean Atacama Desert: The Caldera study field (2024)
    CRC1211 Database (CRC1211DB)
    Details
    Publikationsdatum: 2024-02-21
    Beschreibung: Abstract
    Beschreibung: A high-resolution Digital Terrain Model (DTM) has been processed for the Tillandsia landbeckii study sites at Arica. The original source data have been obtained from drone flight images. The final resolution of the DTM is of about 16 cm/px. We acknowledge support in the field and during data processing from Alexander Siegmund (PH Heidelberg).
    Beschreibung: TableOfContents
    Beschreibung: The zip.file contains the following 5 files: 1) Caldera.blend 2) Caldera_Ortho_0-5res_clipped.tif 3) Caldera_DEM_clipped_rescale.tif 4) Caldera_DEM_clipped_rescale_0-5res.tif 5) Caldera_DEM_clipped_rescale_0-5res_rendered.tif Please do not change file names nor file extensions when loading files for viewing in BLENDER version 4.0 (https://www.blender.org/download/releases/4-0/). The "0-5res" file-versions refer to a 0.5m/px resolution (EPSG:32719 - WGS 84 / UTM Zone 19S). File Caldera_DEM_clipped_rescale.tif was processed to a final resolution of 1.67e-06 °degrees (c. 0.165 m) [EPSG:4326 - WGS 84].
    Beschreibung: Other
    Beschreibung: Short introduction into the methods: Very-high resolution images were captured using an unmanned aerial vehicle (UAVs) [drone: DJI Matrice 200; DJI Zenmuse X5S RGB camera]. With processing of the UAV data images are merged according to their geographical position by means of the Structure-from-Motion (SfM) algorithm and a digital elevation model was created (Micheletti et al. 2015; Westoby et al. 2012). High-resolution topographic surveying using the Structure-from-Motion (SfM) algorithm is a low-cost and user-friendly photogrammetric technique to obtain high-resolution datasets. The SfM method solves the camera pose and scene geometry simultaneously and automatically, using highly redundant bundle adjustment based on matching features in multiple overlapping, offset images (Westoby et al. 2012). SfM-Processing was performed using Agisoft Metashape Professional (Version 1.6.1 64 bit). Agisoft Metashape Professional performs well to reconstruct landscape 3D point clouds and the different steps of the process are configurable and can be controlled (Laporte-Fauret et al. 2019). Images were fed into the software and the quality (tool “estimate image quality”) and position was determined respectives images were chosen to cover the study area. Using the “Aling Photos” tool images were aligned creating tie points (2D) and a Depth Maps (high quality, mild filtering) was created (3D). With the help of the Build Dense Cloud tool, set to high quality, the data points were created that represent the study area in 3D. Consecutively an orthomosaic of the study area was created using the Build Orthomosaic tool. An orthomosaic is a photogrammetrically orthorectified image product that has been mosaicked from a collection of images and corrected for geometric distortion to create a seamless mosaic dataset. Due to the high-resolution input data and the processing without compression a high-resolution orthomosaic was achieved with a pixel size of 2.1 cm/pix covering the study area. This detailed, high-resolution geolocated photo representation of the study site is the basis for the following analytical steps. A digital elevation model (DEM) was computed using the “Build DEM” tool. Its dimensions resulted herein in a 16.5 cm/pix size to cover the entire study site. Final adjustment of elevation has been done using the Copernicus Digital Elevation Model (https://spacedata.copernicus.eu/de/collections/copernicus-digital-elevation-model) using QGIS (https://www.qgis.org/de/site/). Laporte-Fauret, Q., et al. (2019). "Low-Cost UAV for high-resolution and large-scale coastal dune change monitoring using photogrammetry." Journal of Marine Science and Engineering 7(3): 63. Micheletti, N., Chandler, J. H., & Lane, S. N. (2015). Structure from motion (SFM) photogrammetry. In L. E. Clarke, & J. M. Nield (Eds.), Geomorphological techniques (Online Edition) (pp. 1–12, Chapter 2.2.2). British Society for Geomorphology Westoby, M. J., et al. (2012). "‘Structure-from-Motion’photogrammetry: A low-cost, effective tool for geoscience applications." Geomorphology 179: 300-314.
    Schlagwort(e): Biota ; Landscape Evolution
    Materialart: Dataset , Sub data for DTM configuration
    Format: ZIP
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  • 74
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    Crystallographic Information File (CIF) of the magnesium phosphate mineral struvite collected by single-crystal X-Ray diffraction (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-02-12
    Beschreibung: Abstract
    Beschreibung: Crystallographic Information File (CIF) of the magnesium phosphate mineral struvite collected by single-crystal X-Ray diffraction.  The magnesium phosphate mineral struvite (MgNH4PO4·6H2O) is of interest for the recovery of phosphorus from wastewaters and for use as a fertilizer in agriculture, yet its structure is still debated. The structure of synthetic single crystals of struvite was characterized through refinement of a single-crystal X-ray diffraction pattern acquired at 100 K. The crystal structure was processed into a crystallographic information file (CIF), which is an internationally used data format used by crystallographers, mineralogists and chemists, containing all relevant information about the structure of a specific crystalline phase (Hall et al.: International Tables for Crystallography (2006). Vol. G, ch. 2.2, pp. 20-36). Detailed description and experimental outline of the structural determination is found in Volkmann et al. (2024), DOI: https://doi.org/10.31223/X5KQ4F
    Schlagwort(e): Struvite ; Crystal structure ; Mineral ; Phosphate ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS 〉 SEDIMENTARY ROCKS 〉 SEDIMENTARY ROCK PHYSICAL/OPTICAL PROPERTIES
    Materialart: Dataset , Dataset
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  • 75
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    The 3-rd Order Polynomial Fit Coefficients of Electron Lifetime Caused by Interaction with Chorus Waves (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-02-12
    Beschreibung: Abstract
    Beschreibung: In near-Earth space, a large population of high-energy electrons are trapped by Earth’s magnetic field. These energetic electrons are trapped in the regions called Earth’s ring current and radiation belts. They are very dynamic and show a very strong dependence on solar wind and geomagnetic conditions. These energetic electrons can be dangerous to satellites in the near-Earth space. Therefore, it is very important to understand the mechanisms which drive the dynamics of these energetic electrons. Wave-particle interaction is one of the most important mechanisms. Among the waves that can be encountered by the energetic electrons when they move around our Earth, whistler mode chorus waves can cause both acceleration and the loss of energetic electrons in the Earth's radiation belts and ring current. Using more than 5 years of wave measurements from NASA’s Van Allen Probe mission, Wang et al (2019) developed chorus wave models which depend on magnetic local time (MLT), Magnetic Latitude (MLat), L-shell, and geomagnetic condition index Kp. To quantify the effect of chorus waves on energetic electrons, we calculated the bounce-averaged quasi-linear diffusion coefficients using the chorus wave model developed by Wang et al (2019) and extended to higher latitudes according to Wang and Shprits (2019). Using these diffusion coefficients, we calculated the lifetime of the electrons with an energy range from 1 keV to 2 MeV. In each MLT, we calculate the lifetime for each energy and L-shell using two different methods according to Shprits et al (2007) and Albert and Shprits (2009). We make the calculated electron lifetime database available here. Please notice that the chorus wave model by Wang et al (2019) is valid when Kp 〈= 6. If the user wants to use this lifetime database for Kp 〉6, please be careful and contact the authors.
    Schlagwort(e): Earth's radiation belt; ring current; electron precipitation; electron lifetime ; EARTH SCIENCE 〉 SUN-EARTH INTERACTIONS 〉 IONOSPHERE/MAGNETOSPHERE DYNAMICS 〉 PLASMA WAVES ; EARTH SCIENCE SERVICES 〉 MODELS 〉 SOLAR-ATMOSPHERE/SPACE-WEATHER MODELS
    Materialart: Dataset , Dataset
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  • 76
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    GEOSCRAPE zircon database (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-02-14
    Beschreibung: Abstract
    Beschreibung: This database contains a compilation of published zircon geochronology, chemistry and isotope data. The database was created through automated web scraping of the Figshare data repository. Data included U-Pb and Pb-Pb dating, Lu-Hf isotopes, trace element and rare earth element chemistry and isotopes. Where available, metadata on the analytical method, lithology, sample description and sampling coordinates are included. All analyses include a citation and doi link to the original data hosted on Figshare. See metadata table for descriptions of table headers. See associated manuscript for web scraping code.
    Beschreibung: Other
    Beschreibung: The DIGIS geochemical data repository is a research data repository in the Earth Sciences domain with a specific focus on geochemical data. It is hosted at GFZ Data Services through a collaboration between the Digital Geochemical Data Infrastructure (DIGIS) for GEOROC 2.0 (https://digis.geo.uni-goettingen.de) and the GFZ German Research Centre for Geosciences. The repository archives, publishes and makes accessible user-contributed, peer-reviewed research data that fall within the scope of the GEOROC database. Compilations of previously published data are also made available on the GEOROC website (https://georoc.eu) as Expert Datasets.
    Schlagwort(e): data compilation ; zircon geochronology ; geochemistry data ; isotope data ; GEOROC Expert Dataset ; zircon ; magmatic ; detrital ; U-Pb age ; Pb-Pb age ; Lu-Hf isotopes ; trace elements ; rare earth elements ; adakite ; amphibolite ; andesite ; anorthosite ; aplite ; arenite ; ash ; basalt ; basaltic andesite ; basaltic trachyandesite ; bentonite ; biotitite ; charnockite ; conglomerate ; dacite ; diamictite ; diorite ; dolerite ; dunite ; gabbro ; granite ; granodiorite ; granulite ; greenschist ; greywacke ; hornblendite ; kersantite ; kimberlite ; lamprophyre ; leucogranite ; lherzolite ; limestone ; migmatite ; monzodiorite ; monzogranite ; monzonite ; norite ; orthogneiss ; paragneiss ; pegmatite ; pelite ; psammite ; pumice ; pyroxenite ; quartzite ; radiolarite ; rhyodacite ; rhyolite ; rodingite ; sandstone ; schist ; serpentinite ; shale ; siltstone ; spessartite ; syenite ; syenogranite ; tonalite ; trachyandesite ; trachydacite ; trachyte ; trondhjemite ; tuff ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 ISOTOPE MEASUREMENTS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 ISOTOPE RATIOS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 ISOTOPES ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 ISOTOPIC AGE ; EARTH SCIENCE 〉 SOLID EARTH 〉 ROCKS/MINERALS/CRYSTALS 〉 MINERALS 〉 MINERAL AGE DETERMINATIONS
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  • 77
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    CRM-geothermal - Gas chemical measurements at the Tuzla, Seferihisar and Dikili geothermal fields, Turkey (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-02-26
    Beschreibung: Abstract
    Beschreibung: To enhance the EU's economic autonomy, feasible options for local sourcing of critical raw materials that would allow for shorter supply routes along with ethical and responsible value chains are under contemplation. Social acceptance of mining in Europe is, however, low, and the establishment of new mining sites faces strong public opposition. Therefore, innovative solutions for the production of primary raw materials need to be developed. A new idea for raw material extraction is the extraction of essential elements from geothermal fluids. Deep geothermal fluids, increasingly used for energy production, often contain high concen-trations of dissolved ions and gases in commercially interesting concentrations. The EU-funded project CRM-geothermal aims to develop new technologies to extract these highly relevant elements, including helium, during geothermal production cycles. In this way, an environmentally friendly and socially acceptable exploration and exploitation method could be deployed. One aim of the CRM-geothermal project is to gain an overview of the actual quantities of critical raw materials in various geothermal fluids in Europe by taking and analyzing fluid samples. In Turkey for instance, classical high enthalpy (volcanic) systems exist, which are representative for many geothermal areas worldwide. The sites are located at the edges of tectonic plates and close to areas undergoing volcanic activity. The brines are mixed with seawater and circulate in the deeper crust. The data publication contains analyses results of three gas samples from Tuzla, two samples from Seferihisar geothermal power plant and one sample from the Dikili geothermal field in Turkey, taken in 2023 as part of the CRM-geothermal project.
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  • 78
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    Event peak flow dataset for spatial counterfactual events, Germany (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-02-28
    Beschreibung: Abstract
    Beschreibung: This dataset comprises event peak flows, representing extreme floods at 516 stations in Germany. The data generation process involves several key steps. Initially, observed rainfall events associated with 10 historical flood disasters from 1950 to 2021 are undergone spatial shifts. These shifts involve three distances (20, 50, and 100 km) and eight directions (North, Northeast, East, Southeast, South, Southwest, West, Northwest), resulting in 24 counterfactual precipitation events. Including the factual (no shift) event, a total of 25 distinct shifting events are considered. Subsequently, these shifted fields are used as atmospheric forcing for a mesoscale hydrological model (mHM) set up and calibrated for the entire Germany. The model produces daily stream flows across its domain, from which the event peak flows are derived. This dataset is expected to provide a valuable resource for analyzing and modeling the dynamics extreme flood events in Germany.
    Schlagwort(e): extreme floods ; counterfactuals ; EARTH SCIENCE 〉 HUMAN DIMENSIONS 〉 NATURAL HAZARDS 〉 FLOODS
    Materialart: Dataset , Dataset
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  • 79
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    Stable Nitrogen isotope composition of common wheat in intercropping with Persian clover (Tuscany, Italy) (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-03-06
    Beschreibung: Abstract
    Beschreibung: Intercropping is the simultaneous growth of two or more crops in the same space for a significant part of their life cycle (Willey, 1979). In this context, samples from one farm experiments in the growing season 2015/2016 and 2016/2017, embedded in the cropping systems of one arable farm in the surrounding of Pisa, central-western part of Italy, were collected for analysis. The treatments were: PCW, a temporary intercropping system of wheat and persian clover, sown in paired rows; CONTROLSTRIP, unfertilized wheat as a sole crop, sown in paired rows.
    Beschreibung: Methods
    Beschreibung: The samples were collected from a farm located in Valtriano, around 20 km from Pisa (43°36’N 10°29’E). The temporary intercropping system comprises common wheat (Triticum aestivum L., cv. Bolero) and persian clover (Trifolium resupinatum L., cv. Laser). Sampling of above-ground plant biomass was done by hands in March 2016 and 2017. For each treatment, above-ground plant biomass was collected several plots which includes three subplots with dimension of 0.25m2 in 2016 and 0.075 m2 in 2017. The samples collected, only for the green part of the plant, were dried at 60°C for 48 h. Then, coarse grinding of the plant fibres (about 1 mm in diameter) was carried out, followed by further cryogenic grinding.
    Schlagwort(e): EPOS ; multi-scale laboratories ; geochemistry and microscopy ; geochemistry data ; EARTH SCIENCE 〉 BIOSPHERE 〉 VEGETATION 〉 NITROGEN
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  • 80
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    Survey of critical raw materials in Tanzania East African Rift geothermal araes (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-03-08
    Beschreibung: Abstract
    Beschreibung: In autumn 2022, an expedition to Tanzania was undertaken within the framework of the research project “CRM-geothermal” and Scintific Priority Program (SPP) 2238 “Dynamics of Ore Metal Enrichment”. Within „CRM-geothermal“ we are looking for an environmentally friendly co-production of critical raw materials together with the provision of geothermal energy. In the EARS, high levels of rare earth elements (REE), Sr, Ba and Mg are expected in waters and solids in areas with alkaline volcanic rocks, while other critical elements, including helium, have been sought in other localities. In particular, the eastern branch is the most juvenile sector and has increased geothermal potential related to hot fluids migrating along permeable faults. Tanzania was crossed from north to south, along the eastern arm of the EARS, to collect gas, water, rock and sediment samples associated with natural hot springs, lakes and vents. On site, physical and chemical parameters were measured in-situ and documented together with the geology, infrastructure and the domestic use of the hot site. In the south, existing drill sites and geothermal development areas were visited and gas and water samples were taken from boreholes and rocks sampled from drill cores. The survey covered 13 sites, from Lake Natron in the north to Lake Malawi in the south (see map).
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  • 81
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    Drone based photogrammetry data at the Geysir geothermal field, Iceland (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-03-18
    Beschreibung: Abstract
    Beschreibung: Geysers are localized hydrothermal vents that periodically erupt with gas bubbles at the surface. Understanding their distribution, dynamics, and conduit geometry is critical to understand the fluid and heat transfer through the crust. To explore this at the Geysir geothermal field in Iceland, we analyzed the spatial distribution of thermal features using high-resolution UAV-based optical and infrared cameras. Based on this, Walter et al. (2020) identified 364 distinct thermal spots. Here we release the high-resolution drone orthomosaic dataset at the Geysir geothermal field, Iceland.
    Beschreibung: Methods
    Beschreibung: The field campaign and subsequent findings are derived from UAV data collected between July 27th and August 5th, 2016. We used lightweight cameras mounted on a modified DJI Matrice 100 quadcopter drone, allowing flight durations of over 30 min and simultaneous use of optical and thermal cameras. Flight control was based on GPS, with live video feed to the operator and predefined flight paths. Overflights were conducted at different times to optimize image quality: daylight flights at 5:00 local time for optimal contrast for the optical camera, and cold night flights at 3:00 local time for the infrared camera. Altitudes were 120 meters above ground to ensure comprehensive image coverage. The optical camera, a DJI Zenmuse X5R, captured 16-megapixel images at 2 frames per second, with each image geotagged by GPS. The thermal camera, a FLIR Tau 2, had a fully radiometric resolution of 640 × 512 pixels and a spectral band of 7.5-13.5 μm, with GPS geotagging for each image.
    Schlagwort(e): Strokkur ; Iceland ; thermal map ; orthomosaic ; Aircraft 〉 UAV ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Thermal/Radiation Detectors 〉 FLIR ; EARTH SCIENCE 〉 OCEANS 〉 MARINE VOLCANISM 〉 HYDROTHERMAL VENTS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 GEYSER ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC LANDFORMS 〉 VOLCANO ; EARTH SCIENCE SERVICES 〉 MODELS 〉 DIGITAL ELEVATION/DIGITAL TERRAIN MODELS ; energy 〉 energy type 〉 non-conventional energy 〉 geothermal energy ; hydrosphere 〉 water (geographic) 〉 surface water 〉 thermal water ; monitoring 〉 monitoring technique 〉 photogrammetry
    Materialart: Dataset , Dataset
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  • 82
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    Sample information, major element stream chemistry, inversion model setup and results, sample corrections for precipitation and degassing, and CO2 exchange calculations (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-03-22
    Beschreibung: Abstract
    Beschreibung: Tables that include information and calculations associated with water samples collected from rivers in Central Italy. The goal of the project was to determine the carbon budget for the Central Apennine Mountains of Italy, by accounting for weathering reactions that are responsible for either CO2 drawdown or release into the atmosphere. The carbon budget was created by: 1) analysing samples from different water bodies and sources in the Central Apennines (rivers, lakes, and groundwater) for ion and isotope signatures, and 2) by incorporating the ion and isotope signatures from the waters into an inversion model that partitions these signatures into different sources (e.g. minerals, vegetation, atmospheric sources) around the landscape. All data associated with this publication are provided in a single excel spreadsheet that contains a separate tab for each of the 18 Tables. The supplementary data include: 1) Information on the locations of the water samples and associated water bodies, described in the “Sampling Methods” section, 2) ion and isotope measurements from the water samples, described in the “Analytical Procedure” section, 3) the setup and output from the inversion model, and 4) the CO2 calculations that form the basis for the carbon budget, described in the “Data Processing” section. Water samples were collected over two seasons, in winter and summer; data in the tables are divided by sampling season, where indicated in the content description. For a full description of the sampling strategy, data, and methods, please refer to: Erlanger et al. (2024) “Deep CO2 release and the carbon budget of the central Apennines modulated by geodynamics” Nature Geoscience.
    Schlagwort(e): major element chemistry ; water isotopes ; rivers ; Central Italy ; CO2 budget ; geodynamics ; Apennine Mountains ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROCESSES 〉 CHEMICAL WEATHERING ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOCHEMISTRY 〉 GEOCHEMICAL PROPERTIES 〉 ISOTOPE MEASUREMENTS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 FLUVIAL PROCESSES 〉 WEATHERING ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES 〉 SUBDUCTION
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 83
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    Script and case study dataset for numerical modelling of uplifted marine terrace sequences (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-03-25
    Beschreibung: Abstract
    Beschreibung: Numerical model supporting the article: "Uplifted marine terraces at active margins: understanding the effects of sea reoccupation and coseismic uplift on uplift rate calculation. The forward numerical model reproduces the evolution of an uplifting margin subject to sea erosion. The age-mixing resulting from reoccupation and the likelihood of missing terraces along a staircase sequence increase the inaccuracy of terrace ages assigned through geometrical cross correlation; this may result in erroneous uplift rates and consequent misinterpretation of the uplift evolution. Further research is needed to explore whether vertical displacement reproducing the full seismic cycle, inclusive of both permanent and elastic deformation, and variable uplift rates, have a similar relevance in shaping the geometry of terrace sequences. The code provides the possibility to have steady uplift, i.e. aseismic and constant over time, or coseismic uplift, i.e. given by instantaneous vertical displacement, reproducing earthquakes. It is possible to define time intervals having different uplift rate values, or different uplift modes (aseismic and seismic periods), or vary the characteristic of the coseismic uplift, such as recurrence intervals and coseismic uplift displacement. The coseismic uplift can also be superimposed to a background uplift rate. All values can be of positive or negative sign. The user can define which variable values are saved in the model output, and these include parameters such as the terrace age and the reoccupation tracker. In the repository we include three sea level curves, but any other sea level curve provided by the user can be used to run the model. The parameter values used in the manuscript models are described in the Supplementary Information file of the manuscript. The data provided in txt format report data published by Saillard et al. (2011) and additional calculations, which have been used for the case study of the manuscript. The model scripts are written in Julia language and can be used to reproduce marine terraces formation at coastal margins subject to uplift. The scripts are organized as Github repository (https://github.com/albert-de-montserrat/LEM1D). Movies S1 to S8 provide a qualitative illustration of the terrace evolution under different uplift conditions.
    Beschreibung: Other
    Beschreibung: Copyright 〈2020〉 〈albert-de-montserrat〉 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
    Schlagwort(e): subduction margin ; marine terraces ; sea erosion ; earthquakes ; coseismic uplift ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 COASTAL LANDFORMS 〉 WAVE-CUT NOTCH/PLATFORMS ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOMORPHIC LANDFORMS/PROCESSES 〉 TECTONIC PROCESSES 〉 TECTONIC UPLIFT ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 NEOTECTONICS ; science 〉 natural science 〉 earth science 〉 geology 〉 tectonics
    Materialart: Model , Model
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 84
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    Unbekannt
    Superconducting Gravimeter Data from Serrahn - Level 1 (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-03-25
    Beschreibung: Abstract
    Beschreibung: The International Geodynamics and Earth Tide Service (IGETS) was established in 2015 by the International Association of Geodesy (IAG). IGETS continues the activities of the Global Geodynamics Project (GGP, 1997-2015) to provide support to geodetic and geophysical research activities using superconducting gravimeter (SG) data within the context of an international network. The SG site “Serrahn” is located in the TERENO Observatory in the nort-eastern German lowlands. The observatory contributes to investigating the regional impact of climate and land use change. At the IGETS site Serrahn, the mean annual temperature is 8.8 °C and mean annual precipitation is 591 mm. The land cover is mainly characterized as a mixed forest, dominated by European beech and Scots pine. Influenced by the last glaciation in an outwash close to the terminal morraine, the uppermost soil layer of the site consists of aeolian sands up to a depth of 450 cm, followed by coarser sandy material with intercalated till layers. The unconfined groundwater level is at about 14 m below surface. There is hardly any human activity (e.g., traffic) at this quiet forest site. The nearest town is Neustrelitz at a distance of 5 km. Since December 2017, the superconducting gravimeter iGrav-033 is operated outdoors at this forest location (Latitude: 53.3392 N, Longitude: 13.17413 E, Elevation: 79.60 m). The gravimeter is installed in a dedicated field enclosure on top of a concrete pillar with an area of 1.1 m x 1.1 m at an elevation of 0.80 m above the terrain surface. The pillar has been build to a depth of 2.00 m below the surface. One additional pillar (also 1.1 m x 1.1 m, at surface level) is located right next to the iGrav installation and is used for repeated observations with absolute gravimeters (AG). At the site, meteorological (precipitation, air temperature, humidity, air pressure) and hydrological (groundwater, soil moisture, sapflow, throughfall) parameters are monitored by different sensors. Raw gravity and local atmospheric pressure records sampled at second intervals and the same records decimated at 1‐minute samples are provided as Level 1 products to the IGETS network.
    Schlagwort(e): Superconducting gravimetry ; Earth tides ; Geodynamics ; IGETS ; International Geodynamics and Earth Tide Service ; geophysics ; geodesy ; hydrology ; EARTH SCIENCE 〉 SOLID EARTH 〉 GRAVITY/GRAVITATIONAL FIELD 〉 GRAVITY ; environment 〉 geophysical environment ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS 〉 GRAVITY STATIONS ; In Situ Land-based Platforms 〉 GEOPHYSICAL STATIONS/NETWORKS 〉 SGO ; In Situ/Laboratory Instruments 〉 Magnetic/Motion Sensors 〉 Gravimeters 〉 SUPERCONDUCTING GRAVIMETER ; science 〉 geography 〉 geodesy
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 85
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    Unbekannt
    Lead(II) biosorption experiments of the fungus Penicillium citrinum under geothermal conditions (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-04-02
    Beschreibung: Abstract
    Beschreibung: This dataset is the result of an experimental series that was carried out in September/October 2022 at GFZ German Research Centre for Geosciences, Potsdam, Germany to observe biosorption of lead under extreme conditions. Synthetic solutions, simulating the geothermal fluids from the Heemskerk geothermal power plant were were prepared in 30 ml glass vials (Rotalibo screw neck ND24 EPA). To prepare the stock solutions, sodium chloride (NaCl, 99.8 %, Cellpure, Merck, DE) was added at 265 g/L and Pb(II), in form of lead nitrate (Pb(NO3 )2 , Merck, DE), at 1 g/L to ultrapure water. To assess the impact of acetic acid on lead biosorption, two treatments were done: one without acetic acid and one where acetic acid (100 %, Merck, DE) was added at 60 mg/L. Finally, dead biomass of the fungus Penicillium citrinum was added in the samples at a concentration of 4 g/L (Wahab et al., 2017). The samples were incubated in an autoclave at a pressure of 8 bars on a rotative shaker. The temperature was set at 25 °C, 60 °C or 98 °C with three contact times (1, 2 and 3 h). All treatments were performed in triplicates. For each treatment, two controls without biomass were done. Control samples without the addition of NaCl were done in duplicate, at 25 °C and for 2 h. After incubation, samples were filtered through a 0.22 µm nitrocellulose filter (Sartorius Stedim Biotech, FR) to separate the biomass from the liquid. The biomass on the filters was dried for 24 h at 45 °C before being scraped from the filter and kept in a Falcon tube at room temperature.
    Schlagwort(e): geothermal ; biosorption ; lead biosorption ; Penicillium cintrinum ; batch experiments ; brine
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 86
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    Unbekannt
    GDEMM2024: 30 Arcsec Global Digital Elevation Merged Model 2024, a suite for Earth relief (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-04-10
    Beschreibung: Abstract
    Beschreibung: We merged various digital elevation models (DEMs) published in the recent years and created an up-to-date composite and global solution for Earth’s topography and bathymetry. Compared to the original geographically limited data sets, the final product is a seamless merged grid which additionally provides high resolution and accuracy topography and depth globally. We provide Earth relief grids w.r.t EIGEN-6C4 global geoid in terms of surface and bedrock elevation, ice thickness, and land-type masks which have been substantially improved w.r.t the global grids found in literature. We assessed the quality of the merged surface elevations w.r.t the heights given for about globally distributed 5000 ITRF stations. The merged surface model shows improvement of a factor of three w.r.t the other commonly used DEMs in terms of standard deviation. In addition to the four grids, GDEMM2024_SUR, GDEMM2024_BED, GDEMM2024_ICE, and GDEMM2024_LTM, we provide two additional files, the surface elevation without water (GDEMM2024_TBI) and the GDEMM2024_GEO file to transform the heights above EIGEN_6C4 geoid to ellipsoidal heights. The final grids are provided both in 30 arcsec and 1arcmin resolution and in GeoTIFF format which is one of the standards that is available in GMT (Generic Mapping Tools), GDAL (Geospatial Data Abstraction Library) and in almost all GIS software systems.
    Schlagwort(e): Earth relief grids ; topography ; ice surface elevation ; bedrock elevation ; ice thickness ; land-type masks ; Earth Observation Satellites 〉 TDX ; EARTH SCIENCE 〉 CRYOSPHERE 〉 GLACIERS/ICE SHEETS 〉 GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY ; EARTH SCIENCE 〉 LAND SURFACE 〉 TOPOGRAPHY ; EARTH SCIENCE 〉 LAND SURFACE 〉 TOPOGRAPHY 〉 LANDFORMS ; EARTH SCIENCE 〉 LAND SURFACE 〉 TOPOGRAPHY 〉 SURFACE ROUGHNESS ; EARTH SCIENCE 〉 LAND SURFACE 〉 TOPOGRAPHY 〉 TERRAIN ELEVATION ; EARTH SCIENCE 〉 LAND SURFACE 〉 TOPOGRAPHY 〉 TOPOGRAPHIC EFFECTS ; EARTH SCIENCE 〉 LAND SURFACE 〉 TOPOGRAPHY 〉 TOPOGRAPHICAL RELIEF ; EARTH SCIENCE 〉 OCEANS 〉 BATHYMETRY/SEAFLOOR TOPOGRAPHY 〉 BATHYMETRY ; EARTH SCIENCE 〉 OCEANS 〉 BATHYMETRY/SEAFLOOR TOPOGRAPHY 〉 WATER DEPTH ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 GLACIERS/ICE SHEETS 〉 GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY ; EARTH SCIENCE SERVICES 〉 MODELS 〉 DIGITAL ELEVATION/DIGITAL TERRAIN MODELS
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 87
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    Unbekannt
    Update of the Heat Flow Database in Türkiye (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-04-17
    Beschreibung: Abstract
    Beschreibung: The Turkey heat flow database includes several research articles obtained from the catalogue of The Global Heat Flow Data Assessment Project conducted by the International Heat Flow Commission (IHFC; www.ihfc-iugg.org). The presented database contains 725 heat-flow determinations compiled from 9 different publications generated between 1991-2023 reported within Turkey. For the reporting and sorting of the database, the structure documented by Fuchs et al. (2023) is followed. Within this dataset, 98% of the entries represent continental heat-flow data (onshore), while the remaining 2% correspond to marine data (offshore). 88% of the reported heat flow values were obtained via direct temperature measurements, while the remaining data (12%) were estimated from indirect Curie depth temperature calculations.
    Schlagwort(e): Türkiye ; Heat Flow ; Database ; onshore (continental) ; drilling ; surface temperature/bottom water temperature ; bottom hole temperature – uncorrected ; continuous temperature logging in borehole equilibrium using semiconductor transducer or thermistor probe ; Curie Point/Depth estimate ; thermal conductivity source: assumed from literature ; thermal conductivity method: estimation from lithology and literature ; temperature gradient ; thermal conductivity ; EARTH SCIENCE 〉 LAND SURFACE 〉 SOILS 〉 THERMAL CONDUCTIVITY
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 88
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    Unbekannt
    Surface deformation and topography data from analogue modelling experiments addressing triaxial tectonics in regions of distributed extension (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-04-24
    Beschreibung: Abstract
    Beschreibung: This data set includes the results of high-resolution digital elevation models (DEM) and digital image correlation (DIC) analysis applied to analogue modelling experiments. Twenty generic analogue models are extended on top of a rubber sheet. Two benchmark experiments are also reported. Detailed descriptions of the experiments can be found in Liu et al. (submitted) to which this data set is supplement. The data presented here are visualized as topography and the horizontal cumulative surface strain (principal strain and slip rake).
    Schlagwort(e): EPOS ; multi-scale laboratories ; analogue models of geologic processes ; analogue modelling results ; depression ; Digital Image Correlation (DIC) / Particle Image Velocimetry (PIV) ; Digital Image Correlation (DIC) / Particle Image Velocimetry (PIV) 〉 StrainMaster (La Vision GmbH) ; Extension box ; fault ; graben ; graben ; High frame rate camera ; horst ; normal fault ; Poisson ratio ; rift valley ; rifting ; Sand 〉 Quartz Sand ; Sandbox ; Silicon/Silly putty/PDMS ; SLR camera ; Structure from Motion (SfM) ; Structure from Motion (SfM) 〉 Photoscan (Agisoft) ; tectonic and structural features ; tectonic process ; tectonic process 〉 continental_breakup ; tectonic process 〉 continental_breakup 〉 rifting ; tectonic setting 〉 extended terrane setting ; tectonic setting 〉 extended terrane setting 〉 continental rift setting ; tectonic setting 〉 intraplate tectonic setting ; wrench fault
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 89
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    Ellipsoidal Harmonic Forward Model derived from Earth2014 topographies up to d/o 7200: EHFM_Earth_7200 (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-04-30
    Beschreibung: Abstract
    Beschreibung: The model named EHFM_Earth_7200 was derived by layer-based forward modeling technique in ellipsoidal harmonics, the maximum degree of this model reaches 7200. The relief information was provided by Earth2014 relief model. EHFM_Earth_7200 provides very detailed (~3 km) information for the Earth’s short-scale gravity field, and it is expected to be able to augment or refine existing global gravity models. To meet the existing standard, here we provide spherical harmonic coefficients, which are transformed from original ellipsoidal harmonic coefficients. The maximum degree of the spherical harmonic coefficients is 7300.
    Beschreibung: Methods
    Beschreibung: - Compute global equiangular reduced latitude grids from degree 10800 Earth2014 SHCs and expanded these grids into EHCs. The grids are band-limited in spherical harmonics instead of in ellipsoidal harmonics so extra degrees beyond the truncation degree are also calculated. We obtained surface EHCs up to degree and order (d/o) 11000 but truncated them to d/o 7200. - Calculate potential models of three layers (crust, water and ice) separately from Earth2014 reliefs by new developed ellipsoidal harmonic forward modeling formulas. The densities of the three layers are 2670, 1030, and 917 kg/m^3. - Sum up results from the three layers and obtain EHFM_Earth_7200 ellipsoidal harmonic coefficients. - Convert ellipsoidal harmonic coefficients to spherical harmonic coefficients. The maximum degree of the spherical harmonic coefficients is 7300.
    Schlagwort(e): Gravity forward modeling ; Ellipsoidal topographic potential ; Spectral domain ; Layer concept ; ICGEM ; geodesy ; topographic gravity field model ; EARTH SCIENCE 〉 SOLID EARTH 〉 GRAVITY/GRAVITATIONAL FIELD ; EARTH SCIENCE 〉 SOLID EARTH 〉 GRAVITY/GRAVITATIONAL FIELD 〉 GRAVITY
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 90
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    Unbekannt
    The Global Heat Flow Database: Release 2024 (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-05-02
    Beschreibung: Abstract
    Beschreibung: The data publication contains the compilation of global heat-flow data by the International Heat Flow Commission (IHFC; www.ihfc-iugg.org) of the International Association of Seismology and Physics of the Earth's Interior (IASPEI). The presented data update release 2024 contains data generated between 1939 and 2024 and constitutes the second intermediate update benefiting from the global collaborative assessment and quality control of the Global Heat Flow Database running since May 2021 (http://assessment.ihfc-iugg.org). The data release comprises new original heat-flow data published since April 2023 (the update 2023). It contains 91,182 heat-flow data from 1,586 publications. 57% of the reported heat-flow values are from the continental domain (n ~ 54,553), while the remaining 43% are located in the oceanic domain (n ~ 36,692).
    Schlagwort(e): heat flow density ; Global Heat Flow Database ; International Heat Flow Commission ; EARTH SCIENCE 〉 OCEANS 〉 MARINE VOLCANISM 〉 BENTHIC HEAT FLOW ; EARTH SCIENCE 〉 OCEANS 〉 OCEAN HEAT BUDGET 〉 HEAT FLUX ; physical property 〉 temperature
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 91
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    Unbekannt
    Major and trace element concentrations in hydrological Critical Zone compartments in the Conventwald (Black Forest, Germany) (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-05-03
    Beschreibung: Abstract
    Beschreibung: This dataset contains element concentrations of six different hydrological compartments sampled on a daily basis over the course of one year in two neighboured first order headwater catchments located in the Conventwald (Black Forest, Germany). Critical Zone water compartments include above-canopy precipitation (bulk precipitation including rainwater, snow and fog water), below-canopy precipitation (throughfall), subsurface flow from three distinct soil layers (organic layer, upper mineral soil, deep mineral soil), groundwater, creek water and spring water. Element concentrations include major elements (Ca, K, Mg, Na, Si, S), trace elements (Al, Ba, Cr, Cu, Fe, Li, Mn, P, Sr, Zn), anion (Cl), and dissolved organic elements (DOC, DON). The data were used to explore concentration (C) - discharge (Q) relationships and to calculate short-term element-specific chemical weathering fluxes, which were compared with previously published long-term element-specific chemical weathering fluxes. The ratio of both weathering fluxes, described by the so-called “Dissolved Export Efficiency” (DEE) metric revealed deficits in the stream dissolved load. These deficits were attributed to colloid-bound export and either storage in re-growing forest biomass or export in biogenic particulate form. Tables supplementary to the article, including data quality control, are provided in .pdf and .xlsx formats. In addition, data measured in the course of the study are also provided as machine readable ASCII files.
    Schlagwort(e): Critical Zone ; Major element concentration ; Trace element concentration ; Anion concentration ; Dissolved organic element concentration ; Stream water ; Groundwater ; Subsurface flow ; Throughfall ; Precipitation ; Spring water ; Time series ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 GROUND WATER 〉 GROUNDWATER CHEMISTRY ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 SURFACE WATER 〉 DISCHARGE/FLOW ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 SURFACE WATER 〉 SURFACE WATER CHEMISTRY ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 WATER QUALITY/WATER CHEMISTRY 〉 NUTRIENTS ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 WATER QUALITY/WATER CHEMISTRY 〉 TRACE METALS
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 92
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    Preprint: Understanding the consequences of refaunation in coexistence landscapes: integrating social and ecological dimensions (2024)
    ##
    Details
    Publikationsdatum: 2024-05-03
    Beschreibung: Abstract
    Beschreibung: Human-wildlife conflict poses a significant challenge to 21st-century conservation, with a limited understanding of these interactions within the broader social and ecological context of coexistence. Specifically, the impact of large-scale refaunation efforts on social-ecological dynamics in landscapes shared by humans and wildlife remains poorly understood. This study aims to enhance this understanding by jointly analyzing the consequences of refaunation involving wildlife and cattle in a mixed-use landscape in sub-Saharan Africa. Applying an interdisciplinary approach encompassing ecology, soil science, agricultural economics, and environmental anthropology, we reconstruct the coupling processes in social-ecological systems triggered by refaunation over the last five decades in Namibia&039;s portion of the Kavango-Zambezi Transfrontier Conservation Area (KAZA TFCA). To assess ecological impacts of refaunation with cattle or elephants, space-for-time substitutions are used. The findings demonstrate that post-1960s increases in cattle numbers, and the surge in wildlife numbers since the 1990s have shaped the coexistence landscape. Elephant refaunation positively impacted herbaceous vegetation and soil conditions at intermediate elephant densities but negatively affected vegetation at higher densities. Wildlife refaunation, achieved through conservation and tourism, reduced income inequality. However, this effect was outweighed by the concentration of wealth among affluent cattle owners. Increasing rural inequality contributed challenges of local resource governance. Our study highlights that refaunation has profound ecological and socio-economic repercussions, challenging existing forms of resource governance in KAZA-TFCA and similar coexistence landscapes in Africa, and emphasizing the need for further research on the simultaneous increase of wildlife and cattle and its socio-ecological consequences.
    Beschreibung: Other
    Beschreibung: Article impact statement: Simultaneous refaunation with cattle and elephants poses both ecological and governance challenges, emphasizing the need for balanced conservation policies.
    Schlagwort(e): Ecology ; Environment ; Carbon ; Conservation Areas ; Ecology ; National Park ; Vegetation Structure ; Wildlife ; Livestock Grazing ; Future-making ; Economy ; Anthropology ; Human-Environment Interactions ; Tree-Grass Interactions ; Rewilding ; Refaunation
    Materialart: DataPaper , Scientific Publication
    Format: PDF
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 93
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    Unbekannt
    Tsunami flow depth in Lima/Callao caused by a historic event for varying bottom roughness simulated with the models Tsunami-HySEA and TsunAWI (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-05-08
    Beschreibung: Abstract
    Beschreibung: This data collection contains inundation maps in Lima and Callao (Peru) based on tsunami simulations with two numerical wave propagation and run-up models (Tsunami-HySEA and TsunAWI) for a range of Manning values between 0.015 and 0.06, where constant values were applied in the whole model domain. The simulations were carried out in the framework of the RIESGOS project (https://www.riesgos.de/en/). The source is based on the historic event from October 1746, the parameters are derived from the study Jimenez et al. (2013). The moment magnitude is prescribed to Mw 9.0, the source area is split into five sub-faults, with inhomogeneous slip distribution and static deformation at time zero (this means no kinematic source model). The flow depth distribution in Lima/Callao after four hours simulation time obtained by the two models is interpolated to raster files and provided in geoTIFF format.
    Schlagwort(e): numerical modelling ; tsunami inundation ; Nonlinear prosesses ; bottom roughness ; Callao ; Peru ; EARTH SCIENCE 〉 OCEANS 〉 OCEAN WAVES 〉 TSUNAMIS ; EARTH SCIENCE SERVICES 〉 DATA ANALYSIS AND VISUALIZATION ; environmental data ; experiment 〉 simulation 〉 modelling
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 94
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    Unbekannt
    Catalogues of bulge and fountain formation at Strokkur geyser in 2017, 2020 and 2022: Heights, rising speeds and seismic signal (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-05-08
    Beschreibung: Abstract
    Beschreibung: Strokkur is a pool geyser in southwest Iceland that erupts every 3.7 minutes. Eruptions start with a blue water bulge that soon turns white (bulge phase) before the water bubble bursts into a jetting water fountain (jet phase). We measured the bulge rising velocity and height and fountain rising velocity and height using video cameras and drones from GFZ and the accompanying ground motion using seismometers from the University of Potsdam. We publish the derived products from video data and seismic data here.
    Schlagwort(e): geyser ; eruption ; geothermal ; geothermal tremor ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Photon/Optical Detectors 〉 Cameras 〉 VIDEO CAMERA ; EARTH SCIENCE 〉 SOLID EARTH 〉 GEOTHERMAL DYNAMICS ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 VOLCANIC ACTIVITY 〉 ERUPTION DYNAMICS ; science 〉 natural science 〉 earth science 〉 geophysics
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 95
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    Unbekannt
    Experimental adsorption parameters of boron isotopes on clay minerals (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-08-12
    Beschreibung: Abstract
    Beschreibung: Adsorption and isotopic fractionation of boron on clastic sediment is one process responsible for the heavy boron isotopic composition of the modern ocean. However, the mechanism by which boron complexes to the surface of clay minerals and the cause of its isotopic fractionation are still unclear. We performed two sets of experiments, using solutions of pure water with added boron and seawater, to explore the isotope behavior during adsorption of boron onto kaolinite, smectite and illite. The dataset consists of an excel file with four sheets that store (1) the NIST RM 803 measurements we used to establish the long-term reproducibility of our isotope measurements, (2) results of our pure experiment, (3) results of our seawater experiments and (4) a global compilation of XRD-based riverine clay mineral assemblages.
    Schlagwort(e): surface complexation model ; clay ; boron isotopes ; boron adsorption ; compound material 〉 sedimentary material 〉 sediment 〉 clastic sediment 〉 mud 〉 clay ; EARTH SCIENCE 〉 LAND SURFACE 〉 EROSION/SEDIMENTATION 〉 SUSPENDED SOLIDS ; EARTH SCIENCE 〉 TERRESTRIAL HYDROSPHERE 〉 SURFACE WATER 〉 SURFACE WATER CHEMISTRY ; In Situ/Laboratory Instruments 〉 Spectrometers/Radiometers 〉 MC-ICP-MS ; physicochemical process 〉 sorption 〉 adsorption ; The Present
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 96
    facet.materialart.
    Unbekannt
    Half-hourly CO2 eddy covariance flux data, associated meteorological data and Sentinel-2 derived vegetation indices (7) for 05/03/2020 - 23/08/2022 [data] (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-08-14
    Beschreibung: Abstract
    Beschreibung: This repository contains all the data used for the article "Monitoring cropland daily carbon dioxide exchange at field scales with Sentinel-2 satellite imagery" by Pia Gottschalk, Aram Kalhori, Zhan Li, Christian Wille, Torsten Sachs. The data are used to exemplify how ground measured CO2 fluxes of an agricultural field can be linked with remotely sensed vegetation indices to provided an upscaling approach for spatial CO2-flux projection. The provided data form the basis for running the data processing scripts sequentially for (re-)producing all statistical analyses, results and figures in the article. The data are given in the formats as used in the data-processing scripts written in R, MATLAB and JavaScript of Google Eearth Engine. All codes for processing the data and a workflow description can be found here. The dataset covers three types of data: half-hourly eddy covariance (EC) data, satellite derived vegetation indices and GIS/image data. Continuous EC CO2 fluxes (03/2020 - 08/2023) are measured at the agricultural site "Heydenhof" in Northeastern Germany. The data file is provided in .mat (MATLAB) format containing the standard EddyPro software output variables which are described in an accompanying meta data file. The land use information used for footprint modeling is included as .jpeg and .png-files for visulisation and as .mat-file to be used for running the footprint modeling script. Sentinel-2 vegetation indices are provided as .csv files. These files are provided for convenience and version control only as the JavaScript for generating Sentinel-2 derived vegetation indices in Google Earth Engine is provided in the associated code repository. Here, the field boundaries are provided as shape file. Data file description: "HEY_LandUse_image.mat": MATLAB file in raster format, containing the land use codes in a 4x4 km raster with a resolution of 1 m used for running the Korman-Meixner foot print model for flux source area attribution. "meta_data_HEY_LandUse_image.txt": description of land use codes used in the "HEY_LandUse_image.mat" "HEY_LandUse_image.png": Visualisation of HEY_LandUse_image.mat. Figure A2 in manuscript. Showing the land use distribution around the measurement tower encoded in the number of land use classes used for foot print modeling. "HEYDENHOF.jpeg": Visualisation of land use classes from digitisation. Auxiliary information. Showing the land use distribution around the measurement tower. "HEY_FluxData_20200304_20220824_all_data.mat": MATLAB data file containing the half-hourly EC measurements plus auxiliary meteorological variables from 04/03/2020 to 24/08/2022 in matrix format with rows being the half-hourly measurements and including the unique time identifier "Timestamp", and "NaN" as missing data value. "meta_data_HEY_FluxData.txt": text file accompanying "HEY_FluxData_20200304_20220824_all_data.mat" containing the variable names, units, format, range and description for the variables of "HEY_FluxData_20200304_20220824_all_data.mat" "TERENO_prec_data_2020_2022.csv": comma separated text file containing the half-hourly precipitation data for the measurement site (HEY) from 01/01/2020 to 13/10/2022. "meta_data_TERENO_prec.txt": text file accompanying " TERENO_prec_data_2020_2022.csv " containing the variable description of the TERENO precipitation data. "HEY_tower_field.zip": zipped shape file outlining the agricultural field used as source area for the satellite data retrieval. "S2.csv": comma separated text file containing the vegetation indices from Sentinel-2 for the agricultural field from 02/03/2020 to 29/08/2022. "meta_data_Sentinel2_S2.txt": text file accompanying "S2.csv" containing the variable description of Sentinel-2 derived vegetation indices, i.e. "S2.csv". "S2_SD.csv": comma separated text file containing the standard deviation of the vegetation indices for the agricultural field from 02/03/2020 to 29/08/2022. "meta_data_Sentinel2_S2_SD.txt": text file accompanying "S2_SD.csv" containing the variable description of the standard deviation for the Sentinel-2 derived vegetation indices.
    Schlagwort(e): net ecosystem exchange ; gross primary production ; ecosystem respiration ; satellite derived vegetation indices ; NDVI ; EVI ; EVI2 ; GNDVI ; SAVI ; SR ; S2REP ; EARTH SCIENCE 〉 BIOSPHERE 〉 TERRESTRIAL ECOSYSTEMS 〉 AGRICULTURAL LANDS ; environment 〉 natural environment 〉 terrestrial environment ; In Situ Land-based Platforms 〉 FIXED OBSERVATION STATIONS ; In Situ/Laboratory Instruments 〉 Current/Wind Meters 〉 EDDY CORRELATION DEVICES
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 97
    facet.materialart.
    Unbekannt
    Code for linking half-hourly CO2 eddy covariance flux data with Sentinel-2 derived vegetation indices (7) for 05/03/2020 - 23/08/2022 [code] (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-08-14
    Beschreibung: Abstract
    Beschreibung: This repository provides the code used for the article "Monitoring cropland daily carbon dioxide exchange at field scales with Sentinel-2 satellite imagery" by Pia Gottschalk, Aram Kalhori, Zhan Li, Christian Wille, Torsten Sachs. The data are used to exemplify how ground measured CO2 fluxes of an agricultural field can be linked with remotely sensed vegetation indices to provided an upscaling approach for spatial CO2-flux projection. The repository contains the codes produced for the article "Monitoring cropland daily carbon dioxide exchange at field scales with Sentinel-2 satellite imagery" by Pia Gottschalk, Aram Kalhori, Zhan Li, Christian Wille, Torsten Sachs. In this article, the authors present how local carbon dioxide (CO2) ground measurements and satellite data can be linked to project CO2 emissions spatially for agriculutral fields. The codes are provided for - footprint analysis and raw flux data quality control (MATLAB codes); - retrieving Sentinel-2 vegetation indices via Google Earth Engine (GEE code); - subsequent quality control, gap-filling and flux partitioning following the MDS approach by Reichstein et al. 2005 implemented by the R-package "REddyProc" (R codes); - statistical analyses of combined EC and Sentinel-2 data (R codes); - code for all figures as displayed in the manuscript (R codes). This software is written in MATLAB, R and JavaScript (GEE). Running the codes (R and .m files (Code)) and loading the data files (CSV files and .mat files (Data)) requires the pre-installation of [R and RStudio] (https://posit.co/downloads/) and (MATLAB). The GEE script runs in a browser and can also be opened/downloaded here: https://code.earthengine.google.com/858361ae4aac7c3fe5227076c9733040 The RStudio 2021.09.0 Build 351 version has been used for developping the R scripts. The land cover classification work was performed in QGIS, v.3.16.11-Hannover. Data were analyzed in both MATLAB and R; and plots created with R (R Core Development Team 2020) in RStudio®.The R codes in this repository contain a suite of external R-packages ("zoo"; "REddyProc"; "Hmisc"; "PerformanceAnalytics") which are required for data analysis in this manuscript. The data to run the codes are published with the DOI https://doi.org/10.5880/GFZ.1.4.2023.008 (Gottschalk et al., 2023).
    Schlagwort(e): net ecosystem exchange ; gross primary production ; ecosystem respiration ; satellite derived vegetation indices ; NDVI ; EVI ; EVI2 ; GNDVI ; SAVI ; SR ; S2REP ; EARTH SCIENCE 〉 BIOSPHERE 〉 TERRESTRIAL ECOSYSTEMS 〉 AGRICULTURAL LANDS ; environment 〉 natural environment 〉 terrestrial environment ; In Situ Land-based Platforms 〉 FIXED OBSERVATION STATIONS ; In Situ/Laboratory Instruments 〉 Current/Wind Meters 〉 EDDY CORRELATION DEVICES
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 98
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    Unbekannt
    Cabo de Gata-Nίjar Natural Park, Spain (2005) - a (hyperspectral) dataset for active participation in the HYPERedu MOOC on soil applications (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-07-09
    Beschreibung: Abstract
    Beschreibung: The dataset contains a subset of an airborne hyperspectral HyMap image over the Cabo de Gata-Nίjar Natural Park in Spain from 15.06.2005, and soil wet chemistry data based on in-situ soil sampling. The Cabo de Gata-Nίjar Natural Park is a semi-arid mediterranean area in Southern Spain, sparsely populated and with a range of landscape patterns. The soils in this area are developed on volcanic and carbonatic bedrocks and are highly variable in their textural and mineralogical composition, offering interesting spectral variability. The airborne survey was acquired during a DLR / HyVista HyEurope campaign. The image dataset is fully processed for atmospheric and geometric correction with PARGE and ATCOR and is provided as orthorectified reflectance in BSQ format. Spatial resolution is 5 m and spectral coverage is 0.45-2.45 μm with 12-17 nm spectral sampling. In addition to the HyMap imagery, this dataset contains two soil reference datasets as CSV files, namely in-situ data for clay content and iron content. The dataset is made publicly available as part of the Massive Open Online Course (MOOC) "Beyond the Visible - Imaging Spectroscopy for Soil Applications ", available from Spring 2024. Guidance on how to derive semiquantitative and quantitative soil maps (clay and iron content) using the EnMAP-Box (QGIS plugin) EnSoMAP tool are provided as videos at the HYPERedu YouTube channel (https://www.youtube.com/@HYPERedu_GFZ/playlists) and the soil MOOC course pages (https://eo-college.org/courses/beyond-the-visible-imaging-spectroscopy-for-soil-applications/).
    Beschreibung: Other
    Beschreibung: HYPERedu is an education initiative within the Environmental Mapping and Analysis Program (EnMAP), a German hyperspectral satellite mission that aims at monitoring and characterizing the Earth’s environment on a global scale. EnMAP serves to measure and model key dynamic processes of the Earth’s ecosystems by extracting geochemical, biochemical and biophysical variables, which provide information on the status and evolution of various terrestrial and aquatic ecosystems.
    Schlagwort(e): hyperspectral ; hyperspectral imagery ; imaging spectroscopy ; HyMap airborne imagery ; Cabo de Gata-Nίjar ; Spain ; Mediterranean ; soil ; clay ; DEM ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Spectrometers/Radiometers ; EARTH SCIENCE 〉 SPECTRAL/ENGINEERING
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 99
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    Unbekannt
    Demmin, Germany (2015) - a (hyperspectral) dataset for active participation in the HYPERedu MOOC on soil applications (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-07-09
    Beschreibung: Abstract
    Beschreibung: This dataset accompanying the MOOC on soil applications contains an airborne hyperspectral HySpex image over the study site Demmin in Northern Germany which was recorded in October 2015. The surrounding area of Demmin is characterized by its glacial past and is largely used for agriculture. Here you can find relics of the ice age such as kettle holes - small, completely closed hollow shapes whose formation is attributed to the burial and subsequent thawing of an ice lens. Mostly overgrown nowadays by vegetation, SOC accumulates in these areas and higher contents are measured. The image dataset is fully pre-processed – all non-soil pixels are masked, the spectra were smoothed using a Savitzky-Golay Filter and transformed to first derivatives – and provided in BSQ format. In addition to the HySpex image, this dataset contains a point data shapefile with 27 sampling locations, as well as information on the soil organic carbon (SOC) contents [g/kg]. The dataset is made publicly available as part of the Massive Open Online Course (MOOC) "Beyond the Visible - Imaging Spectroscopy for Soil Applications ", available from Spring 2023. Guidance on how to derive quantitative soil maps (SOC content) using the EnMAP-Box (QGIS plugin) are provided as videos at the HYPERedu YouTube channel, the soil MOOC course pages and the regression workflow documentation.
    Beschreibung: Other
    Beschreibung: HYPERedu is an education initiative within the Environmental Mapping and Analysis Program (EnMAP), a German hyperspectral satellite mission that aims at monitoring and characterizing the Earth’s environment on a global scale. EnMAP serves to measure and model key dynamic processes of the Earth’s ecosystems by extracting geochemical, biochemical and biophysical variables, which provide information on the status and evolution of various terrestrial and aquatic ecosystems.
    Schlagwort(e): hyperspectral ; hyperspectral imagery ; imaging spectroscopy ; HySpex airborne imagery ; Demmin ; Germany ; soil ; SOC ; Earth Remote Sensing Instruments 〉 Passive Remote Sensing 〉 Spectrometers/Radiometers ; EARTH SCIENCE 〉 SPECTRAL/ENGINEERING
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
  • 100
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    Unbekannt
    Raw and processed Distributed Acoustic Sensing Ambient Noise data in an Urban Area (2024)
    GFZ Data Services
    Details
    Publikationsdatum: 2024-05-13
    Beschreibung: Abstract
    Beschreibung: The here presented data set contains time series recording urban seismic noise which was evaluated with MASW to retrieve a shear wave velocity model for subsurface characterization. Distributed Acoustic Sensing (DAS) technology was used to acquire the seismic data in strain-rate unit along an 11-km long telecommunication fiber optic cable which runs parallel to a major road in Berlin, Germany. The original DAS data was recorded at the sampling frequency of 1000 Hz using iDAS Silixa Interrogator Unit with a gauge length of 10 m and a channel spacing of 8 m for the duration of 15 days form 5th of April 2021 to 20th April 2021.
    Schlagwort(e): Seismic interferometry ; Multi-Channel Analysis of Surface Waves ; Distributed Acoustic Sensing (DAS) ; EARTH SCIENCE 〉 SOLID EARTH 〉 TECTONICS 〉 EARTHQUAKES 〉 SEISMIC PROFILE 〉 SEISMIC SURFACE WAVES
    Materialart: Dataset , Dataset
    Standort Signatur Erwartet Verfügbarkeit
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    DATEN GFZ
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