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  • PANGAEA  (9,651)
  • Elsevier  (2,549)
  • American Association for the Advancement of Science
  • Cambridge University Press
  • Springer Science + Business Media
  • 2020-2024  (12,206)
  • 2005-2009  (2)
  • 1995-1999  (2)
  • 2020  (12,206)
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  • 1
    Electronic Resource
    Electronic Resource
    A measurement of τ polarization in Z^0 decays (1992-8977)
    Amsterdam : Elsevier
    Physics Letters B 294 (1992), S. 466-478 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0370-2693(92)91549-O
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of the average lifetime of b hadrons (1993-4325)
    Amsterdam : Elsevier
    Physics Letters B 317 (1993), S. 474-484 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0370-2693(93)91027-K
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  • 3
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    Mush cannibalism and disruption recorded by clinopyroxene phenocrysts at Stromboli volcano: New insights from recent 2003–2017 activity (2020)
    Elsevier
    Details
    Publication Date: 2023-10-26
    Description: The Present-day (〈1.2 kyr) activity of Stromboli (Aeolian Islands, Southern Italy) is fed by a vertically-extended mush column with an open-conduit configuration. The eruptive products are the result of periodic supply of mafic magma (low porphyritic or Lp-magma) from depth into a homogeneous shallow reservoir (highly porphyritic or Hp-magma). Clinopyroxene phenocrysts from the 2003–2017 activity exhibit marked diopside-augite heterogeneities caused by continuous Lp-Hp magma mixing and antecryst recycling. Diopsidic bands record Lp-recharge injected into the shallow Hp-reservoir, whereas resorbed diopsidic cores testify to the continuous disruption and cannibalism of relic antecrysts from the mush. The transition between diopside (∼1175 °C) and augite (∼1130 °C) takes place at comparable P (∼190 MPa) and H2O (0.5–2.4 wt%) conditions. Short timescales (∼1 year) for diopsidic bands from the 2003 paroxysm document restricted temporal intervals between mafic injection, magma mixing and homogenization in the Hp-reservoir. Longer timescales (∼4–182 years) for diopsidic cores indicate protracted antecryst remobilization times. By comparing clinopyroxenes from the Present-day and Post-Pizzo eruptions, we argue a distinct phase in the life of Stromboli volcano is evident from the 2003 paroxysm onwards. More efficient mechanisms of mush disruption and cannibalism involve diopsidic antecrysts remobilized and transported by Lp-magmas permeating the mush, in concert with gravitational instability of the solidification front and melt migration within the shallow Hp-reservoir. Magmatic injections feeding the persistent Present-day activity are more intensively mixed and homogenized prior to eruption, reflecting small recharge volumes and/or a more mafic system in which the mafic inputs are less pronounced.
    Description: Published
    Description: 105440
    Description: 3V. Proprietà chimico-fisiche dei magmi e dei prodotti vulcanici
    Description: 4V. Processi pre-eruttivi
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    Stick-slip vs. stable sliding fault behaviour: A case-study using a multidisciplinary approach in the volcanic region of Mt. Etna (Italy) (2020)
    Elsevier
    Details
    Publication Date: 2023-10-26
    Description: In active volcanic zones, fault dynamics is considerably fast but it is often difficult to separate the pattern of nearly continuous large-scale volcanic processes (inflation/deflation processes, flank instability) from impulsive episodes such as dyke intrusions or coseismic fault displacements. At Etna, multidisciplinary studies on active faults whose activity does not strictly depend on volcanic processes, are relatively few. Here we present the case-study of the San Leonardello fault, an active structure located in the eastern flank of Mt. Etna characterised by a well-known seismic history. This fault saw renewed activity in May 2009, when pre-seismic creeping along the southern segment preceded an MW 4.0 earthquake in the northern segment, followed by some twenty-five aftershocks. Later, in March–April 2016, creep events reactivated the southern section of the same fault. Both the seismic and aseismic phenomena were recorded by the seismic and GNSS networks of INGV-Osservatorio Etneo, and produced surface faulting that left a footprint in the pattern of ground deformation detected by the InSAR measurements. We demonstrate that the integration of multidisciplinary data collected for volcano surveillance may shed light on different aspects of fault dynamics, and allow understanding how coseismic slip and creep alternate in space and time along the strike. Moreover, we use findings from our independent datasets to propose a conceptual model of the San Leonardello fault, taking into account behaviour and previous constraints from fault-based seismic hazard analyses. Although the faulting mechanisms described here occur at a very small scale compared with those of a purely tectonic setting, this case-study may represent a perfect natural lab for improving knowledge of seismogenic processes, also in other fault zones characterised by stick slip vs. stablesliding fault behaviour.
    Description: Published
    Description: 228554
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: Fault ; Earthquake ; Creep ; Seismotectonics ; Behaviour ; Mt. Etna volcano ; 04.07. Tectonophysics ; 04.06. Seismology ; 04.03. Geodesy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 5
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    The role of trapped fluids during the development and deformation of a carbonate/shale intra-wedge tectonic mélange (Mt. Massico, Southern Apennines, Italy) (2020)
    Elsevier
    Details
    Publication Date: 2023-10-26
    Description: Numerous studies exist on exhumed tectonic mélanges along subduction channels whereas, in accretionary wedge interiors, deformation mechanisms and related fluid circulation in tectonic mélanges are still underexplored. We combine structural and microstructural observations with geochemical (stable and clumped isotopes and isotope composition of noble gases in fluid inclusions of calcite veins) and U-Pb geochronological data to define deformation mechanisms and syn-tectonic fluid circulation within the Mt. Massico intra-wedge tectonic mélange, located in the inner part of the central-southern Apennines accretionary wedge, Italy. This mélange developed by shear deformation at the base of a clastic succession. Deformation was characterized by disruption of the primary bedding, mixing, and deformation of relicts of competent olistoliths and strata within a weak matrix of deformed clayey and marly interbeds. Recurrent cycles of mutually overprinting fracturing/veining and pressure-solution processes generated a block-in-matrix texture. The geochemical signatures of syntectonic calcite veins suggest calcite precipitation in a closed system from warm (108°-147 °C) paleofluids, with δ18O vlaues between þ9‰ and 14‰, such as trapped pore waters after extensive 18O exchange with the local limestone host rock and/or derived by clay dehydration processes at T 〉 120 °C. The 3He/4He ratios in fluid inclusions are lower than 0.1 Ra, indicating that He was exclusively sourced from the crust. We conclude that: (1) intraformational rheological contrasts, inherited trapped fluids, and low-permeability barriers such as marlyshaly matrix, can promote the generation of intra-wedge tectonic mélanges and the development of transient fluid overpressure; (2) clay-rich tectonic mélanges, developed along intra-wedge décollement layers, may generate low-permeability barriers hindering the fluid redistribution within accretionary wedges.
    Description: Published
    Description: 104086
    Description: 1T. Struttura della Terra
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: Tectonic mélange ; Fluid-rock interaction ; Stable and clumped isotopes ; Noble gases ; Fold and thrust belt ; 04.04. Geology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 6
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    An evaluation of the C/N ratio of the mantle from natural CO2-rich gas analysis: Geochemical and cosmochemical implications (2020)
    Elsevier
    Details
    Publication Date: 2023-10-31
    Description: The terrestrial carbon to nitrogen ratio is a key geochemical parameter that can provide information on the nature of Earth's precursors, accretion/differentiation processes of our planet, as well as on the volatile budget of Earth. In principle, this ratio can be determined from the analysis of volatile elements trapped in mantle-derived rocks like mid-ocean ridge basalts (MORB), corrected for fractional degassing during eruption. However, this correction is critical and previous attempts have adopted different approaches which led to contrasting C/N estimates for the bulk silicate Earth (BSE) (Marty and Zimmermann, 1999; Bergin et al., 2015). Here we consider the analysis of CO2-rich gases worldwide for which a mantle origin has been determined using noble gas isotopes in order to evaluate the C/N ratio of the mantle source regions. These gases experienced little fractionation due to degassing, as indicated by radiogenic ⁎ values (where 4He and 40Ar* are produced by the decay of U+Th, and 40K isotopes, respectively) close to the mantle production/accumulation values. The C/N and ratios of gases investigated here are within the range of values previously observed in oceanic basalts. They point to an elevated mantle C/N ratio (∼350-470, molar) higher than those of potential cosmochemical accretionary endmembers. For example, the BSE C/N and ratios (160-220 and , respectively) are higher than those of CM-CI chondrites but within the range of CV-CO groups. This similarity suggests that the Earth accreted from evolved planetary precursors depleted in volatile and moderately volatile elements. Hence the high composition of the BSE may be an inherited feature rather than the result of terrestrial differentiation. The and ratios of the surface (atmosphere plus crust) and of the mantle cannot be easily linked to any known chondritic composition. However, these compositions are consistent with early sequestration of carbon into the mantle (but not N and noble gases), permitting the establishment of clement temperatures at the surface of our planet.
    Description: Published
    Description: 116574
    Description: 3V. Proprietà chimico-fisiche dei magmi e dei prodotti vulcanici
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 7
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    Magma ascent at floor-fractured craters diagnoses the lithospheric stress state on the Moon (2020)
    Elsevier
    Details
    Publication Date: 2023-10-31
    Description: On the Moon, floor-fractured craters (FFCs) present evidence of horizontal crater-centred magmatic intrusions. Crater floor uplift and moat formation indicate that these sill intrusions occur at shallow depths ( 〈 10 km). While a recent study has demonstrated that magma ascent below FFCs and mare-filled craters was triggered by crater unloading, the mechanism leading to the emplacement of shallow sills is still poorly understood. Here we show that the local stress field due to crater unloading is also responsible for the horizontalisation of the magma flow leading to sill-like intrusions. On Earth, caldera formation has been shown to similarly affect magma trajectories, inducing the formation of a sill-shaped storage zone. Magma ascent to shallow depths below FFCs was however made possible because of a regional tensional stress caused by mare loading on the lunar lithosphere. We show that the tensional stress generated by elastic lithosphere deformation caused by mare loading combined to the local crater stress field can explain the distribution of FFCs on the Moon, with the smallest FFCs being located over a larger distance range from the mare. In particular, FFCs distribution around Oceanus Procellarum is consistent with an average load thickness of ∼ 1 km. This study suggests that magma trajectory in the crust of terrestrial planets can provide a diagnostic of the lithospheric structure and state of stress.
    Description: Published
    Description: 115889
    Description: 4V. Processi pre-eruttivi
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 8
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    New insights on metals in the Arctic aerosol in a climate changing world (2020)
    Elsevier
    Details
    Publication Date: 2023-10-25
    Description: Ship traffic, population, infrastructure development, and mining activities are expected to increase in the Arctic due to its rising temperatures. This is expected to produce a major impact on aerosol composition. Metals contained in atmospheric particles are powerful markers and can be extremely helpful to gain insights on the different aerosol sources. Thiswork aims at studying the sources of metals in the Arctic aerosol sampled at the Thule High Arctic Atmospheric Observatory (THAAO; Greenland, 76.5°N 68.8°W). Due to the particular composition of Greenlandic soils and to properties of other sources, it was possible to find several signatures of natural and anthropogenic aerosols transported from local and long-range regions. Arctic haze (AH) at Thule builds up on long-range transported aerosol mainly from Canada and Nord America. From a chemical standpoint, this aerosol is characterized by a high concentration of sulfate, Pb, As and Cd and by a La/Ce ratio larger than 1. The Ti/Al and Fe/Al ratios in the AH aerosol are lower (Ti/Al = 0.04 w/w; Fe/ Al= 0.79 w/w) than for local aerosol (Ti/Al= 0.07 w/w; Fe/Al = 0.89 w/w). Conversely, aerosol arising from coastal areas of South-West Greenland is characterized by a high concentration of V,Ni, and Cr. These metals, generally considered anthropogenic, arise heremainly fromnatural crustal sources. In some summer samples, however, the V/Ni ratio becomes larger than 3. In particular, cases displaying this characteristic ratio, as also shown by backward trajectories, are associated with sporadic transport to Thule of ship aerosol from ships passing through Baffin Bay and arriving to Thule during summer. Although further measurements are necessary to confirm the discussed results, the analysis carried out in this work on a large number of metals sampled in coastal Greenland aerosol is unprecedented.
    Description: Published
    Description: 140511
    Description: 5A. Ricerche polari e paleoclima
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 9
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    Subduction-related melt refertilisation and alkaline metasomatism in the Eastern Transylvanian Basin lithospheric mantle: Evidence from mineral chemistry and noble gases in fluid inclusions (2020)
    Elsevier
    Details
    Publication Date: 2023-10-25
    Description: Calc-alkaline and alkaline magmatic activity is generally separated in space and/or in time. The Eastern Transylvanian Basin in Romania is one of the few places where, during Pleistocene, alkaline eruptions occurred contemporaneously with the calc-alkaline activity. Mantle xenoliths entrained in Perşani Mts. alkaline volcanic products have been studied in order to investigate the interaction of metasomatic agents of different magmatic affinities with the mantle wedge. Based on mineral major and trace element and noble gases in fluid inclusions, two main events have been recognized. The first was a pervasive, complete re-fertilization of a previously depleted mantle by a calc-alkaline subduction-related melt, causing the formation of very fertile, amphibole-bearing lithotypes. This is shown by the a) increased amounts of modal clinopyroxene up to 21.9 % with Al2O3 contents up to 8.16 wt%, higher than what is expected for clinopyroxene in Primordial Mantle; b) 4He/40Ar* ratios up to 1.2, within the reported range for mantle production; c) 3He/4He in olivine, opx and cpx of 5.8 ± 0.2 Ra, among the most radiogenic values of European mantle, below the typical MORB mantle value (8 ± 1 Ra), reflecting recycling of crustal material in the local lithosphere. The second event is related to later interaction with an alkaline metasomatic agent similar to the host basalts that caused slight LREE enrichment in pyroxenes and disseminated amphiboles and precipitation of vein amphiboles with a composition similar to amphiboles megacrysts also found in the Perşani Mts. volcanic deposits. This is highlighted by the 4He/40Ar* and 3He/4He values found in some opx and cpx, up to 2.5 and 6.6 Ra, respectively, more typical of magmatic fluids.
    Description: Published
    Description: 105516
    Description: 1T. Struttura della Terra
    Description: 1V. Storia eruttiva
    Description: 2V. Struttura e sistema di alimentazione dei vulcani
    Description: 3V. Proprietà chimico-fisiche dei magmi e dei prodotti vulcanici
    Description: JCR Journal
    Keywords: Mantle refertilisation ; Eastern Transylvanian Basin ; Noble gases ; Post-collisional ; Subduction-related metasomatism ; Solid Earth ; 04.01. Earth Interior
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 10
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    Petrological and noble gas features of Lascar and Lastarria volcanoes (Chile): Inferences on plumbing systems and mantle characteristics (2020)
    Elsevier
    Details
    Publication Date: 2023-11-16
    Description: Lascar (5592 m a.s.l.) and Lastarria (5697 m a.s.l.) are Chilean active stratovolcanoes located in the Central Volcanic Zone (CVZ; 16°S to 28°S) that have developed on top of a 71 km thick continental crust. Independently of the similarities in their Plinian/Vulcanian eruptive styles, their complex magmatic feeding structures and the origins of their magmatic fluids still necessitate constraints in order to improve the reliability of geochemical monitoring. Here we investigate the petrography, bulk-rock chemistry, and mineral chemistry in products from the 1986–1993 explosive eruptive cycle at Lascar and from several Holocene eruptive sequences at Lastarria. These data are integratedwith measurements of the noble gas isotopes in fluid inclusions (FIs) of minerals fromthe same products as well as in fumarole gases. The geochemistry ofminerals and rocks shows that the studied products belong to high-K–calc-alkaline series typical of subduction-related settings, and provide evidence of differentiation,mixing, and crustal assimilation that are higher at Lastarria. The contribution of slab sediments and fluids to magma genesis in thewedge is limited, suggesting a homogeneous mantle beneath CVZ. The deepest crystallization processes occurred at variable levels of the plumbing systems according to the lithostatic equivalent depths estimated with mineral equilibrium geobarometers at Lascar (15–29 km) and Lastarria (~20–40 km). The 40Ar/36Ar and 4He/20Ne ratios in FIs and fumarole gases indicate the presence of some degree of air contamination in the fluids from both volcanoes. The 3He/4He values at Lascar (6.9–7.3 Ra) are relatively homogeneous and comparable to those of fumaroles, suggesting a main zone of magma crystallization and degassing. In contrast, the 3He/4He values at Lastarria (5.31–8.01 Ra) vary over a wide range, suggesting various magma storage levels and providing evidence of crustal contamination, as indicated by the rock chemistry.We argue thatmantle beneath the two volcanoes has a MORB-like signature of 3He/4He, while local crustal contamination explains the lower ratios measured at Lascar.
    Description: Published
    Description: 105615
    Description: 1V. Storia eruttiva
    Description: 2V. Struttura e sistema di alimentazione dei vulcani
    Description: JCR Journal
    Keywords: Lascar ; Lastarria ; noble gases ; Fluid inclusions ; Crustal contamination ; Mantle wedge ; 04.08. Volcanology ; 04.01. Earth Interior
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 11
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    Origin and hazard of CO2 and H2S emissions in the Lavinio-Tor Caldara zone (Metropolitan City of Rome Capital, Italy) (2020)
    Elsevier
    Details
    Publication Date: 2023-11-21
    Description: Highlights -He isotopic R/Ra of emitted gas decreases moving away from Albani Hills volcano -Total soil flux of endogenous CO2 at Lavinio-Tor Caldara is estimated to 20 ton/day -Tor Caldara gas has the highest H2S content (up to 6.3 vol.%) of central Italy -Repetition of soil CO2 flux survey shows that flux increases during earthquakes -Gas air concentration monitoring shows that H2S is the killer gas of small animals
    Description: Gas hazard was evaluated at Lavinio-Tor Caldara, the southernmost gas-discharging zone of the quiescent Albani Hills volcano in central Italy. Also this zone, like the other gas discharges of this volcanic complex, is located above a structural high of the buried Mesozoic carbonate basement, which represents the main reservoir for gas rising from depth. All extensional faults affecting the carbonates are leaking pathways along which gas may rise to the surface creating hazardous conditions. Gas is dominated by CO2 (〉90 vol.%) and the second component at Lavinio-Tor Caldara is H2S that displays the highest content (4.0-6.3 vol.%) of all gas manifestations of the Rome region. This H2S enrichment corresponds to a marked decrease in 3He/4He (R/Ra) isotopic ratio suggesting that gas was contaminated in an upper crustal environment. The main gas discharge occurs at the natural reserve of Tor Caldara, in zones where past sulphur mining excavations removed the surficial impervious cover, or along a ditch. Comparison of the results of four soil CO2 flux surveys carried out in 2005-2018 at Miniera Grande within Tor Caldara, indicates that the highest soil CO2 release occurs shortly after local earthquakes. Continuous monitoring of CO2 and H2S air concentration and of wind speed has been carried out for four months in twelve anomalous gas realising sites of Tor Caldara. Results indicate that only H2S reaches lethal concentration (〉250 ppm) near the soil in no wind nights, explaining the presence of small dead animals. At Lavinio, the main soil gas release occurs near old water wells that likely produced a gas blowout during drilling. A total release of over 20 tons/day from 2.93 km2 of gas of endogenous origin, has been estimated for the Lavinio-Tor Caldara area by a detailed soil CO2 flux survey (2,572 measurement points over an area of 3.65 km2). The main structural lineaments of the area have N-S and W-E directions, but also NE-SW and NW-SE directions are well represented. Some sectors of the investigated area are exposed to a severe gas hazard for people and animals and precautionary measures should be adopted.
    Description: Published
    Description: 106985
    Description: 6V. Pericolosità vulcanica e contributi alla stima del rischio
    Description: JCR Journal
    Keywords: •Lavinio-Tor Caldara, southern periphery of Albani Hills volcano ; •He isotopic R/Ra values ; •Soil CO2 flux surveys ; •CO2 and H2S air concentration monitoring ; •Gas chemistry ; •Gas hazard assessment ; 04. Solid Earth
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 12
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    Geophysical reconstruction of buried geological features and site effects estimation of the Middle Valle Umbra basin (central Italy) (2020)
    Elsevier
    Details
    Publication Date: 2023-11-14
    Description: The Middle Valle Umbra (central Italy) is a NW-SE 20 km long and 10 km wide Quaternary extensional basin located in the internal sector of the Apennine chain. This area historically experienced strong earthquakes that caused significant damages to the outstanding historical heritage. The same area has been recently hit by the 2016 seismic sequence of Amatrice-Visso-Norcia. With the aim to reconstruct the buried geological structures of the basin, a multi-technique geophysical approach was performed. An extended campaign of ambient noise measurements was carried out to investigate the subsurface setting, and to identify the main geological units. We performed three 2D passive arrays to analyze two different sites within the basin; their aperture was between 150 and 752 m for one site and of 48 m for the other site, to characterize the geological units in terms of sediment thickness and shear-wave velocity profile. Data collected were processed with f-k and MSPAC analysis to extract dispersion curves with good resolution in a frequency range of 0.5–10 Hz and 4.5–18 Hz for the two sites respectively. Spectral ratios were computed for every single station ambient noise measurement performed and for all the stations of the bigger array. Our final target is to extend these results to the whole valley, in order to retrieve the attitude of the main geological units and propose a reliable reconstruction of the subsurface geometry of the basin. Another point of this work is to evaluate the site response in the middle of the valley through the analysis of the earthquakes recorded by the accelerometric station IT.CSA (belonging to the Italian Civil Protection) and the corresponding recordings of the nearby rock station IT.ASS.
    Description: Published
    Description: id 105543
    Description: 2T. Deformazione crostale attiva
    Description: JCR Journal
    Keywords: site effects ; seismic site characterization ; subsoil model ; spectral ratios ; Valle Umbra ; passive arrays ; 04.06. Seismology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 13
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    Shallow submarine mud volcano in the northern Tyrrhenian sea, Italy (2020)
    Elsevier
    Details
    Publication Date: 2023-11-16
    Description: Submarine methane emissions in the Tuscan Archipelago have been studied since the 1960s, both for economic and research purposes. Offshore gas seepage is mainly concentrated southward and westward of Elba island, along N–S faults related to recent extensional activity in the Tuscan shelf and N–S trending positive magnetic anomalies, which have been interpreted as serpentinites associated with ophiolitic rocks due to their very high magnetic susceptibility. This study focuses on the gas chemistry of a new emission site corresponding to a shallow water mud volcano in the Scoglio d’Affrica area. The Scoglio d’Affrica seep has a gas composition typical of mud volcanoes, with methane as the prevalent component (95 vol%) and minor gases which include carbon dioxide, nitrogen and trace amounts of helium. The combined stable C and H isotope composition of CH4 (δ13C and δ2H) and the enrichment in heavy carbon isotopes of CO2, highlight a prevalent secondary microbial origin for these fluids (δ13C~− 35.8‰ vs VPDB; δ2H~− 166‰ vs VSMOW; δ13CCO2 up to + 21.7‰ vs VPDB). Thus, in spite of the occurrence of positive magnetic anomalies, a possible abiotic origin of methane is excluded. Moreover, the gas from the mud volcano is extremely depleted in 3He and presents typical 3He/4He ratios of a geological setting in which radiogenic crustal helium is strongly predominant. A photo-mosaic of the mud volcano is also reported. A possible connection with other submarine methane emissions in the Tuscan Archipelago is limited to emissions located few kilometers from the Scoglio d’Affrica area. Recent emissions in the area suggest that gases similar in composition from distinct reservoirs, find their way to the surface from Eocene deposits in different time intervals and through different faults and fractures, placed along the Elba-Pianosa ridge.
    Description: Published
    Description: 104722
    Description: 6A. Geochimica per l'ambiente e geologia medica
    Description: JCR Journal
    Keywords: Submarine emission ; Mud volcano ; Methane ; Gas geochemistry ; Tyrrhenian sea ; Geochemistry ; 04.08. Volcanology
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 14
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    Noble gas magmatic signature of the Andean Northern Volcanic Zone from fluid inclusions in minerals (2020)
    Elsevier
    Details
    Publication Date: 2023-11-21
    Description: Trace volatile elements like He are key for understanding the mantle source signature of magmas and to better constrain the relative roles of subduction and crustal processes to the variability of along-arc chemical and isotopic signatures of magmatic fluids. Here we report on noble gas abundances and isotopic data of Fluid Inclusions (FIs) in eruptive products and/or fumarolic gases from the Colombia-Ecuador segment of Andean Northern Volcanic Zone (NVZ). FIs in olivine phenocrysts from Ecuador (El Reventador, Cotopaxi and Tungurahua) yield air-normalized corrected 3He/4He ratios of 7.0–7.4 RA, within the MORB range (8 ± 1 RA). With exception of the Cotopaxi lavas (opx 〈 〈oliv.), these are indistinguishable of those obtained for their cogenetic orthopyroxene pairs and of gas emissions previously reported in literature. Olivine phenocrysts from Nevado del Ruiz fissure lavas also yield the highest 3He/4He (8.5 ± 0.3 RA) for this volcanic system, which is in the range of fumarolic gases for Galeras (previously reported as high as 8.8 RA and here measured to a maximum of 8.3 ± 0.1 RA). Our dataset highlights disparities between isotope signatures of eruptive products from Ecuador (avg. ~7.2 RA) and those reported for the Colombian portion of the NVZ (avg. ~8.5 RA). Previous studies on the geochemistry of erupted products put in evidence significant along-arc variations ascribed either to the involvement of different slab components, or to variable depths of evolution of arc magmas within the continental crust. However, the same variation is not discernible in the signature of noble gases, especially helium, from FIs and gas emissions analyzed in this study, with little inter-variation between Cotopaxi, Reventador and Tungurahua (all within 0.2 RA from the Ecuador average of 7.2) and Galeras and Nevado del Ruiz, whose maximum values differ by ~0.3 RA. We therefore suggest a homogenous MORB-like 3He/4He signature for the mantle wedge beneath this arc segment, whereby along-arc variations in crustal thickness (from 〈35 km at the northernmost part of the segment to ≥50 km at the Ecuadorian arc segment) may factor largely into the variability recorded on our data set. The first CO2/3He ratios obtained in FIs from Andean rocks support the hypothesis of increasing crustal contamination from Colombia to Ecuador, concomitant with increasing crustal thicknesses under the respective arc regions.
    Description: Published
    Description: 119966
    Description: 1V. Storia eruttiva
    Description: 2V. Struttura e sistema di alimentazione dei vulcani
    Description: 4V. Processi pre-eruttivi
    Description: JCR Journal
    Keywords: Andean Volcanic Belt ; Northern Volcanic Zone ; Fluid inclusions ; Noble gases ; Helium ; Crustal thickness ; 04.08. Volcanology ; 04.01. Earth Interior
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 15
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    Explosive mud volcano eruptions and rafting of mud breccia blocks (2020)
    Elsevier
    Details
    Publication Date: 2023-11-21
    Description: Azerbaijan hosts the highest density of subaerial mud volcanoes on Earth. The morphologies characterizing these structures vary depending on their geological setting, frequency of eruption, and transport processes during the eruptions. Lokbatan is possibly the most active mud volcano on Earth exhibiting impressive bursting events every ∼5 years. These manifest with impressive gas flares that may reach more than 100 meters in height and the bursting of thousands of m3 of mud breccia resulting in spectacular mud flows that extend for more than 1.5 kilometres. Unlike other active mud volcanoes, to our knowledge Lokbatan never featured any visual evidence of enduring diffuse degassing (e.g., active pools and gryphons) at and near the central crater. Only a very small new-born gryphon was intermittently active in 2019 (with negligible flow). Gas flux measurements completed with a closed-chamber technique reveal extremely low values throughout the structure with average CH4 = 1.36 tonnes yr−1 and CO2 = 11.85 tonnes yr−1. We suggest that after eruptive events, the mud breccia is able to seal the structure preventing gas release and thereby promoting overpressure build-up in the subsurface. This self-sealing mechanism allows a fast recharge of Lokbatan resulting in more frequent and powerful explosive episodes. Our field observations reveal the presence of large (up to ∼50,000 m3) stratified blocks that were originally part of a large crater cone. These blocks were rafted 〉1 km from the vent on top of mud breccia flows. We use a model based on lubrication theory to show that it is reasonable to transport blocks this large and this far provided the underlying mud flow was thick enough and the blocks are large enough. The presence of large rafted blocks is not a unique phenomenon observed at Lokbatan mud volcano and is documented at other large-scale structures both onshore and offshore.
    Description: Published
    Description: 116699
    Description: 6A. Geochimica per l'ambiente e geologia medica
    Description: JCR Journal
    Keywords: Lokbatan mud volcano Azerbaijan ; rafted mud breccia megablocks ; gas flux ; self-sealing ; explosive eruptions ; lubrication theory ; Solid Earth ; Geochemistry
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 16
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    Do toxic Pseudo-nitzschia species pose a threat to aquaculture in the southern Benguela eastern boundary upwelling system? (2020)
    Elsevier
    In:  EPIC3Harmful Algae, Elsevier, 99, pp. 101919, ISSN: 15689883
    Details
    Publication Date: 2023-03-13
    Description: The productive but highly exposed coastline of the southern Benguela eastern boundary upwelling system offers limited natural environment for aquaculture. Saldanha Bay located on the west coast of South Africa is one of the few embayments on the coastline that provides a productive and relatively sheltered environment suitable for the cultivation of shellfish. Consequently, bivalve culture in South Africa is centered in Saldanha Bay and is presently targeted for expansion. Pseudo-nitzschia blooms including toxin-producing species are shown to contribute significantly to the phytoplankton of Saldanha Bay specifically in spring and summer. Their dominance at this time of the year, when upwelling is strongest, fits the ecological profile of Pseudo-nitzschia occurring during periods of high turbulence and nutrients. Multiple Pseudo-nitzschia blooms were sampled under varying environmental conditions and the strength of the relationship between Pseudo-nitzschia cell abundance and particulate domoic acid (pDA) content, reflecting bloom toxicity, varied greatly. This variability is the result of the combined influence of species and strain composition of the Pseudo-nitzschia assemblage and the effect of environmental conditions on toxin production. Elevated levels of pDA were associated with higher concentrations of cells of the P. seriata complex differentiated by frustule width (〉3 µm). P. australis was identified as a toxin-producing species and a prominent member of the P. seriata complex. Low DA levels in shellfish in Saldanha Bay are considered a function of low cellular domoic acid (cDA). Silicate limitation has emerged as an important factor inducing DA production in Pseudo-nitzschia species. The high ratio of silicate to nitrate in Saldanha Bay provides a plausible explanation for the low toxin content of Pseudo-nitzschia blooms in the bay and the consequent low risk posed by these blooms to the aquaculture sector.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 17
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    Modelling and physico-chemical constraints to the 4.5 ka Agnano-Monte Spina Plinian eruption (Campi Flegrei, Italy) (2020)
    Elsevier
    Details
    Publication Date: 2023-07-18
    Description: The 4.5 ka trachytic Plinian eruption of Agnano-Monte Spina is the largest magnitude event of the past 5 ka at Campi Flegrei caldera. The complete eruptive sequence consists of six members, three of which, named A, B and D, are characterized by the association of fallout and pyroclastic density current (PDC) deposits well preserved at proximal locations. In this study, we analyze the textural characteristics of the pumice clasts of the three major fallout deposits (A1, B1, D1) and of their associated PDC deposits (A2, B2, D2), and link them to the physical properties of magma in order to investigate conduit fluid dynamics. A combination of data (field work, grain-size and density measurements, vesicle number densities and size distributions, crystal content, water content) is used to set up the source term conditions for numerical simulations. Each fall/PDC transition is accompanied by distinctive changes in textural properties of the juveniles, recognized by a lowering in vesicle number densities of about one order of magnitude (from 108 to 107 cm−3), indicating a significant decrease in the magma ascent rate. Melt inclusions show a marked decrease in volatile content recurrent at each fall/PDC transition and indicate that the three main pulses of the eruption were fed by distinct and progressively deeper magma batches. Numerical simulations, taking into account magma properties derived from the textural analyses, and variations in initial water content, show decreases in the exit velocities and Mass Discharge Rate (MDR) consistent with such fall/PDC transitions. Different initial water contents together with changes in conduit diameters allow us to simulate the different column heights reconstructed for the three Plinian phases. The reconstructed scenario for the Agnano-Monte Spina eruption involves a stop-start behavior and a top-down trigger for the most voluminous and intense eruptive episode D.
    Description: Published
    Description: 119301
    Description: 4V. Processi pre-eruttivi
    Description: JCR Journal
    Keywords: Campi flegrei ; Plinian eruptions ; Textural analysis ; VSD ; CSD ; Numerical modeling
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 18
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    Corrigendum to “Organism functional traits and ecosystem supporting services – A novel approach to predict bioirrigation” [Ecol. Indic. 91 (2018) 737–743] (2020)
    Elsevier
    In:  EPIC3Ecological Indicators, Elsevier, 119, pp. 106715-106715, ISSN: 1470-160X
    Details
    Publication Date: 2024-01-31
    Description: The authors regret that the specified units of bioirrigation activity (Ic) and the indices (i.e. IPc,AFDM, IPc,WM, BPc,WM, BPc,AFDM) were incorrect in the original publication. Bioirrigation activity was presented in l/m25 min rather than in l/m2h and the indices were calculated per experimental core rather than per m2. Nevertheless, this does not affect the results and also the conclusions remain unchanged. AICc values for the best models of IPc,AFDM, IPc,WM, BPc,WM, BPc,AFDM have not changed in relation to each other, although they differ in value. The corrected version of Appendix B includes the corrected statistical details (i.e. AICc values). The corrected version of the Fig. 1 is provided below. The authors would like to apologize for any inconvenience caused.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
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  • 19
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    Rhythms of behavior: are the times changin’? (2020)
    Elsevier
    In:  EPIC3Current Opinion in Neurobiology, Elsevier, 60, pp. 55-66, ISSN: 0959-4388
    Details
    Publication Date: 2024-05-10
    Description: Animal life is rhythmic. Here we provide an overview of various rhythmic behaviors, connected environmental factors and endogenous mechanisms. We not only cover terrestrial species, but also highlight aquatic environments with typically complex interconnected rhythms. We further address diel, seasonal and potential lunar rhythms of humans. While we cannot be complete, we aim to emphasize three aspects: First, to raise awareness for the all-encompassing presence of behavioral rhythms and their importance in ecology and evolution. Second, to raise awareness how limited our mechanistic understanding is, besides analyses in a small set of model species. Finally, we discuss how anthropogenic effects can affect behavioral rhythmicity and how this might affect ecosystems in the future, as ‘For the times they are a-changin'’.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 20
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    Greenland Ice Sheet mass balance GRACE/GRACE-FO (2003-2019) and SMB-D (1948-2019) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Description: Data underlying figures 1, 2, 3 and 5. Figure 1: Monthly mass changes of the Greenland Ice Sheet from GRACE/GRACE-FO and SMB-D (2003-2019) Figure 2: Biennial mass balance and its components from GRACE/GRACE-FO and SMB-D (2003-2018) for the Greenland Ice Sheet, along with regional estimates for 2017-2018 for East and West. Figure 3: Rate of mass change for year 2019 from GRACE/GRACE-FO and SMB-D Figure 5: Annual mass balance and its main components from SMB-D (1948-2019) and GRACE/GRACE-FO (2003-2019)
    Keywords: GRACE; GRACE-FO; Greenland; Helmholtz-Verbund Regionale Klimaänderungen = Helmholtz Climate Initiative (Regional Climate Change); ice dynamic discharge; ice sheet mass balance; REKLIM; sea-level rise; surface mass balance
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 21
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    Pollen counts, AMS C14 and Pb-210/Cs-137 dating in sediment cores from three lakes along an open larch forest-forest tundra-tundra transect in the Omoloy region, north-eastern Siberia (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Description: Here, we provide the raw pollen data archived in three Siberian lake sediment cores spanning the mid-Holocene to the present (7.6-0 cal ka BP), from northern typical tundra to southern open larch forest in the Omoloy region. There are three cores: 1. 14-OM-20B, Lat. / °: 70.53, Lon. / °: 132.91, Ele. / m a.s.l.: 52, Modern vegetation: open larch forest, Lake area / km2: 0.26, Maximal depth / m: 3.4 2. 14-OM-02B, Lat. / °: 70.72, Lon. / °: 132.67, Ele. / m a.s.l.: 58, Modern vegetation: forest tundra, Lake area / km2: 0.08, Maximal depth / m: 3.5 3. 14-OM-12A, Lat. / °: 70.96, Lon. / °: 132.57, Ele. / m a.s.l.: 60, Modern vegetation: tundra, Lake area / km2: 0.09, Maximal depth / m: 4.5 Three lake sediment cores, 14OM12A (33 cm long), 14OM02B (49.5 cm long) and 14OM20B (86 cm long), were recovered from three sites using a UWITEC gravity corer (6 cm internal diameter) equipped with a hammer tool in July 2014. From the three cores, 16 bulk organic carbon samples were selected because of the lack of macrofossil remains and radiocarbon dated using accelerator mass spectrometry (AMS) at Poznań radiocarbon laboratory of Adam Mickiewicz University, Poland. In addition, 30 freeze-dried samples per core at 0.25 or 0.5 cm intervals between 0 and 15 cm were analysed for 210Pb/137Cs at the Liverpool University Environmental Radioactivity Laboratory. In this project, we analyse pollen and sedaDNA (Liu et al., 2020; doi:10.5061/dryad.69p8cz900) from three lake sediment cores from the Omoloy region in north-eastern Siberia (northern Yakutia), which are currently surrounded by different vegetation types ranging from typical tundra to open larch forest. First, our aim is to compare sedaDNA with the pollen data to see whether both methods track the same pattern with respect to compositional changes and diversity changes across the northern Russian treeline zone or are complementary to each other. Second, we reconstruct the mid- to late-Holocene changes of vegetation composition along a north–south transect. Third, we use the sedaDNA data to reconstruct variations in species richness and relate this to vegetation and climate change.
    Keywords: AWI_Envi; dating; Lake Omoloy; mid-holocene; north-eastern Siberia; Polar Terrestrial Environmental Systems @ AWI; Pollen
    Type: Dataset
    Format: application/zip, 5 datasets
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  • 22
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    Soil characteristics of Alpine European larch and Swiss pine forests in the LTSER area “Val Mazia/Matschertal”, South Tyrol (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: Here we present soil characteristics from Alpine European larch and Swiss pine forests, as well as mixed forests. The forests are located in the LTSER area "Val Mazia/Matschertal" in the Vinschgau Valley, South Tyrol, Italy. Each three replicates from each forest type (larch, pine, and mixed) were sampled in late summer 2017.
    Keywords: Alpine forests; Calculated, see reference(s); Carbon/Nitrogen ratio; DEPTH, soil; Elevation of event; Event label; Exposition; Forest composition; HydroSenseII (Campbell Scientific, Logan, Utah); Inclination; L100_1; L100_2; L100_3; Larch; Latitude of event; Layer thickness; Longitude of event; LTER Italy; LZ50_1; LZ50_2; LZ50_3; Moisture; MULT; Multiple investigations; Organic content; pH; pH-multimeter (HI2020 edge, Hanna Instruments, Woonsocket, Rhode Island); Sample ID; soil macro-invertebrates; South Tyrol, Italy; Swiss pine; Z100_1; Z100_2; Z100_3
    Type: Dataset
    Format: text/tab-separated-values, 243 data points
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  • 23
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    In situ time series of oxygen in shallow salt marsh tidal ponds (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Center for Marine Environmental Sciences; CO2; DATE/TIME; MARUM; Massachusetts, United States of America; Microoptode; Oxygen; pH; Plum_Island_Estuary; profiles; salt marsh; tidal pond
    Type: Dataset
    Format: text/tab-separated-values, 2741 data points
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  • 24
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    In situ time series of pH in shallow salt marsh tidal ponds (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Center for Marine Environmental Sciences; CO2; DATE/TIME; MARUM; Massachusetts, United States of America; Microoptode; Oxygen; pH; Plum_Island_Estuary; profiles; salt marsh; tidal pond
    Type: Dataset
    Format: text/tab-separated-values, 2691 data points
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  • 25
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    In situ time series of photosynthetically active radiation (PAR) in shallow salt marsh tidal ponds (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Center for Marine Environmental Sciences; CO2; DATE/TIME; MARUM; Massachusetts, United States of America; Microoptode; Oxygen; pH; Plum_Island_Estuary; profiles; Radiation, photosynthetically active; salt marsh; tidal pond
    Type: Dataset
    Format: text/tab-separated-values, 105 data points
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  • 26
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    In situ time series of temperature in shallow salt marsh tidal ponds (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Center for Marine Environmental Sciences; CO2; DATE/TIME; MARUM; Massachusetts, United States of America; Microoptode; Oxygen; pH; Plum_Island_Estuary; profiles; salt marsh; Temperature, water; tidal pond
    Type: Dataset
    Format: text/tab-separated-values, 1426 data points
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  • 27
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    In situ time series of salinity in shallow salt marsh tidal ponds (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Center for Marine Environmental Sciences; CO2; DATE/TIME; MARUM; Massachusetts, United States of America; Microoptode; Oxygen; pH; Plum_Island_Estuary; profiles; Salinity; salt marsh; tidal pond
    Type: Dataset
    Format: text/tab-separated-values, 3 data points
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  • 28
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    Oxygen profiles across the sediment-water interface in three different habitats in salt marshes (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Center for Marine Environmental Sciences; CO2; DEPTH, water; Event label; Great_Sippewissett_marsh; Habitat; MARUM; Massachusetts, United States of America; Michigan, United States; Oxygen; Parker_River; pH; Plum_Island_Estuary_marshes; profiles; salt marsh; tidal pond; Vegetation type
    Type: Dataset
    Format: text/tab-separated-values, 2144 data points
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  • 29
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    Culture seawater properties and Clathromorphum compactum skeletal analyses (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Barium/Calcium ratio; Carbon dioxide, partial pressure; Growth rate per area; Identification; Linear extension; Lithium/Calcium ratio; Magnesium/Calcium ratio; Magnesium/Lithium ratio; pH; pH, standard deviation; Salinity; Species; Temperature, water; Temperature, water, standard deviation; δ11B, borate; δ11B, carbonate; δ11B, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 708 data points
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  • 30
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    Water-soluble salts in the syngenetic permafrost deposits of Late- Pleistocene yedoma from Ayon Island (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: 337-YuV; ALTITUDE; Ayon Island; Bicarbonate ion; Calcium ion; Calculated; Chaun-Chukotka; Chloride ion; Chukotka, Russia; Deposit type; deuterium; heavy oxygen; Holocene; ice wedge; Late Pleistocene; Magnesium ion; pH; Sample ID; Sodium and potassium ions; Stable isotope; Sulfate ion; Total dissolved solids
    Type: Dataset
    Format: text/tab-separated-values, 170 data points
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  • 31
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    Water-soluble salts in the syngenetic ice wedges of Late-Pleistocene yedoma and in the modern ices and the water reservoirs from Ayon Island (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: 337-YuV; ALTITUDE; Ayon Island; Bicarbonate ion; Calcium; Chaun-Chukotka; Chloride; Chukotka, Russia; deuterium; Event label; heavy oxygen; Holocene; ice wedge; Late Pleistocene; Latitude of event; Longitude of event; Magnesium; pH; Sample comment; Sample ID; Sodium and potassium ions; Stable isotope; Sulfate; Titration; Total dissolved solids
    Type: Dataset
    Format: text/tab-separated-values, 435 data points
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  • 32
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    Alkalinity measurements of a loess column experiment in the laboratory under pCO2 atmospheric conditions (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: This dataset includes alkalinity measurements of a loess weathering column experiment, which was conducted under laboratory conditions with atmospheric pCO2.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; DATE/TIME; Duration, number of days; Paleo Modelling; PalMod; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 179 data points
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  • 33
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    Alkalinity measurements of a loess column experiment in the laboratory under pCO2 saturated conditions (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: This dataset includes alkalinity measurements of a loess weathering column experiment, which was conducted under laboratory conditions with saturated pCO2.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; DATE/TIME; Duration, number of days; Paleo Modelling; PalMod; pH; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 175 data points
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  • 34
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    Alkalinity in porewater profile of sediment core BOX_1BC04 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_1BC04; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 54 data points
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  • 35
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    Alkalinity in porewater profile of sediment core BOX_1GL01 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_1GL01; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 99 data points
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  • 36
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    Alkalinity in porewater profile of sediment core BOX_1GL02 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_1GL02; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 94 data points
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  • 37
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    Alkalinity in porewater profile of sediment core BOX_1GL03 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_1GL03; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 78 data points
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  • 38
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    Alkalinity in porewater profile of sediment core BOX_1GL04 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_1GL04; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 74 data points
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    DATA PANGAEA
  • 39
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    Alkalinity in porewater profile of sediment core BOX_2BC05 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_2BC05; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 64 data points
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    DATA PANGAEA
  • 40
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    Alkalinity in porewater profile of sediment core BOX_2BC04 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_2BC04; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 53 data points
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    DATA PANGAEA
  • 41
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    Alkalinity in porewater profile of sediment core BOX_2GL02 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_2GL02; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 89 data points
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    DATA PANGAEA
  • 42
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    Alkalinity in porewater profile of sediment core BOX_2GL01 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_2GL01; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 91 data points
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    DATA PANGAEA
  • 43
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    Alkalinity in porewater profile of sediment core BOX_2GL03 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_2GL03; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 81 data points
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    DATA PANGAEA
  • 44
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    Alkalinity in porewater profile of sediment core BOX_3BC01 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_3BC01; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 56 data points
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    DATA PANGAEA
  • 45
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    Alkalinity in porewater profile of sediment core BOX_3BC02 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_3BC02; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 59 data points
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    DATA PANGAEA
  • 46
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    Alkalinity in porewater profile of sediment core BOX_3BC04 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_3BC04; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 19 data points
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    DATA PANGAEA
  • 47
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    Alkalinity in porewater profile of sediment core BOX_3BC03 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_3BC03; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
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    DATA PANGAEA
  • 48
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    Alkalinity in porewater profile of sediment core BOX_3BC05 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_3BC05; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 34 data points
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    DATA PANGAEA
  • 49
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    Alkalinity in porewater profile of sediment core BOX_3GL01 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_3GL01; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 67 data points
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  • 50
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    Alkalinity in porewater profile of sediment core BOX_3GL02 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_3GL02; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 89 data points
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    DATA PANGAEA
  • 51
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    Alkalinity in porewater profile of sediment core BOX_3GL03 from the Gulf of Cádiz (North East Atlantic) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; BC; BOX_3GL03; Box corer; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EMIGAS; EMIGAS-I; Greenhouse gas emission zones in coastal systems: influence of coastal runoff and benthic metabolism; Gulf of Cadiz; Gulf of Cádiz, Atlantic Ocean; Mytilus; North East Atlantic; pH; porewater; Porosity, fractional; Potentiometric; Salinity; sediment; Sediment porosity, determined by water loss after drying to constant temperature; Temperature, water; Titration potentiometric, 794 Basic Titrino (Metrohm); total alkalinity (TA)
    Type: Dataset
    Format: text/tab-separated-values, 69 data points
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  • 52
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    Water column chemistry of station T3 and T5 from LowpHOX-2 cruise (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Carbon, inorganic, dissolved; Carbon, organic, particulate; Carbon/Nitrogen ratio; Carbon dioxide, partial pressure; Chlorophyll a; CTD; Date/Time of event; DEPTH, water; Environment; Event label; Latitude of event; Longitude of event; LowpHOX-II; Lowphox-II_T3; Lowphox-II_T5; Nitrate; Nitrite; Nitrogen, organic, particulate; Oxygen, dissolved; pH; Phosphate; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 221 data points
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    DATA PANGAEA
  • 53
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    Total dissolved solids and major ions in soils of the first marine terrace of the Belyy Island (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Belyy_Island; Belyy Island; Bicarbonate ion; Calcium; Chloride; cryopegs; DEPTH, sediment/rock; highly mineralized ice wedges; Magnesium; pH; Pollen; polygonal landscapes; Sample ID; Sample type; Sodium and potassium ions; soil temperature changes; spores; Sulfate; Total dissolved solids; Yamal Peninsula, northwestern Siberia
    Type: Dataset
    Format: text/tab-separated-values, 144 data points
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    DATA PANGAEA
  • 54
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    Total dissolved solids and major ions in sediments of the Tambey River floodplain (well 195-YuV) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bicarbonate ion; Calcium cation; Chloride/sulfate ratio; Chloride anion; DEPTH, sediment/rock; geochemical conditions; Ice wedges; Magnesium cation; pH; Pollen; polygonal landscapes; Sample ID; Sodium and potassium ions; soil temperature; Soil type; spores; Sulfate anion; Tambey_River; Tambey River; Total dissolved solids; Yamal-Nenets, Russia; Yamal Peninsula
    Type: Dataset
    Format: text/tab-separated-values, 66 data points
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  • 55
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    Content and composition of water-soluble salts in ice-wedge ice of the first marine terrace of Belyy Island (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Belyy_Island; Belyy Island; Bicarbonate ion; Calcium; Chloride; cryopegs; DEPTH, sediment/rock; highly mineralized ice wedges; Iron; Magnesium; pH; Pollen; polygonal landscapes; Sample ID; Sodium and potassium ions; soil temperature changes; spores; Sulfate; Total dissolved solids; Yamal Peninsula, northwestern Siberia
    Type: Dataset
    Format: text/tab-separated-values, 238 data points
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  • 56
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    Total dissolved solids and major ions in ice-wedge ice of the laida of Belyy Island (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Belyy_Island; Belyy Island; Bicarbonate ion; Calcium; Chloride; cryopegs; DEPTH, sediment/rock; highly mineralized ice wedges; Iron; Magnesium; pH; Pollen; polygonal landscapes; Sample ID; Sodium and potassium ions; soil temperature changes; spores; Sulfate; Total dissolved solids; Yamal Peninsula, northwestern Siberia
    Type: Dataset
    Format: text/tab-separated-values, 85 data points
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  • 57
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    Total dissolved solids and major ions in ice wedge ice of the cross-section of the Tambey river floodplain (wells 193-198-YuV) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bicarbonate ion; Calcium; Chloride; Chloride/sulfate ratio; DEPTH, sediment/rock; Distance, relative; geochemical conditions; Ice wedges; Iron; Magnesium; pH; Pollen; polygonal landscapes; Sample comment; Sample ID; Sodium and potassium ions; soil temperature; spores; Sulfate; Tambey_River; Tambey River; Total dissolved solids; Yamal-Nenets, Russia; Yamal Peninsula
    Type: Dataset
    Format: text/tab-separated-values, 345 data points
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  • 58
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    Total dissolved solids and major ions in modern marine sediments on the Belyy Island (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Belyy_Island; Belyy Island; Bicarbonate ion; Calcium; Calcium ion; Chloride; Chloride ion; cryopegs; highly mineralized ice wedges; Location; Magnesium; Magnesium ion; pH; Pollen; polygonal landscapes; Sample ID; Sample type; Sodium and potassium ions; soil temperature changes; spores; Sulfate; Sulfate ion; Total dissolved solids; Yamal Peninsula, northwestern Siberia
    Type: Dataset
    Format: text/tab-separated-values, 34 data points
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  • 59
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    Physicochemical conditions of control and acidified tanks for culture of flat tree oysters, Isognomon alatus (Gmelin, 1791) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: acidification; Bermuda, Atlantic Ocean; Date; flat tree oyster; Handheld Multiparameter Instrument, YSI Incorporated, YSI 556 MPS; Isognomon alatus; Knife; KNIFE; manipulated CO2; MulletBay; Oxygen, dissolved; pH; Salinity; seawater flow through system; Tank number; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 9548 data points
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  • 60
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    Shell morphometrics of Isognomon alatus in control (pH = 8.1) and acidified tanks (pH = 7.8) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: acidified seawater; Bermuda, Atlantic Ocean; bivalves growth; Buoyant mass; Date; Height; Knife; KNIFE; Length; Measured using callipers; MulletBay; Oysters; pH; Shell morphometrics; Tank number; Thickness; Weighted
    Type: Dataset
    Format: text/tab-separated-values, 750 data points
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  • 61
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    Geochemical profiles of water samples from alkaline springs, Samail Ophiolite, Oman (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: alkaline springs; Alkalinity, total; Barium; Calcium; Carbon, inorganic, dissolved; carbonates; Chloride ion; Conductivity, electrolytic; Date/Time of event; Event label; HAND; HI9813-5; ICP-OES, Varian Vista Pro; Ion chromatography (Metrohm 882 Compact IC plus); ITN-ABYSS; Latitude of event; Location; Longitude of event; Magnesium; Multiparameter probe (HI9813-5, Hanna Instruments, Woonsocket, Rhode Island); OM15-1; OM15-11; OM15-12; OM15-2; OM15-3; OM15-4; OM15-5; OM15-6; OM15-8; OM15-9; OM15K-1; OM15K-10; OM15K-11; OM15K-13; OM15K-14; OM15K-16; OM15K-18; OM15K-19; OM15K-2; OM15K-20; OM15K-21; OM15K-22; OM15K-23; OM15K-3; OM15K-4; OM15K-5; OM15K-6; OM15K-7; OM15K-8; OM15K-9; Oman; pH; Potassium; PROMETHEUS; Sample ID; Sampling by hand; Serpentinization; Silicon; Sodium; Strontium; Sulfate; Temperature, water; Water description
    Type: Dataset
    Format: text/tab-separated-values, 510 data points
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  • 62
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    Physicochemical conditions in response to tidal regime during the field experiment in Mangrove Bay, Ferry Reach, Bermuda (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bermuda; Bermuda, Atlantic Ocean; coastal estuarine; Date; Environmental variables; Event label; EXP; Experiment; Handheld Multiparameter Instrument, YSI Incorporated, YSI 556 MPS; Mangrove Bay; MangroveBay_A; MangroveBay_B; MangroveBay_C; Oxygen, dissolved; pH; pH variation; Salinity; Station A; Station B; Station C; Station label; Temperature, water; Tidal regime; Tide
    Type: Dataset
    Format: text/tab-separated-values, 480 data points
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  • 63
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    Water qaulity measured by Australian Government agencies (1960-1999) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Conductivity, electrical; DATE/TIME; endorheic lake; hydrologic changes; Lake_George; Lake George, NSW, Australia; Landsat; long record; pH; remote sensing; Sentinel; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 1029 data points
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  • 64
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    In-situ light measurements of oxygen, pH and sulfide in a microbial mat from the Atacama Desert, Chile (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: anoxia; arsenic; Atacama Desert; Chile; DEPTH, sediment/rock; Laguna-La-Brava; lithification; Microbial mat; MULT; Multiple investigations; Needle-encased glass electrodes with PA-2000 picoammeter (Unisense); Oxygen; pH; Sulfide; Sulfur
    Type: Dataset
    Format: text/tab-separated-values, 246 data points
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  • 65
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    In-situ dark measurements of oxygen, pH and sulfide in a microbial mat from the Atacama Desert, Chile (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: anoxia; arsenic; Atacama Desert; Chile; DEPTH, sediment/rock; Laguna-La-Brava; lithification; Microbial mat; MULT; Multiple investigations; Needle-encased glass electrodes with PA-2000 picoammeter (Unisense); Oxygen; pH; Sulfide; Sulfur
    Type: Dataset
    Format: text/tab-separated-values, 234 data points
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  • 66
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    Bulk density of sediment core LR398 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bolivian Amazon; climate; Density, dry bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Lake level; land use change; Livingstone piston corer; Llanos de Moxos; LPC; LR398; Multi-Sensor Core Logger (MSCL-XYZ), GEOTEK; Shallow lake
    Type: Dataset
    Format: text/tab-separated-values, 447 data points
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    DATA PANGAEA
  • 67
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    Bulk density of sediment core LR400 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bolivian Amazon; climate; Density, dry bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GCUWI; Gravity corer, UWITEC; Lake level; land use change; Llanos de Moxos; LR400; Multi-Sensor Core Logger (MSCL-XYZ), GEOTEK; Shallow lake
    Type: Dataset
    Format: text/tab-separated-values, 372 data points
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    DATA PANGAEA
  • 68
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    Carbon and Nitrogen concentrations in sediment core LR398 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bolivian Amazon; Carbon, total; Carbon/Nitrogen ratio; climate; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Element analyser CNS, vario EL Cube; Isotope Ratio Mass Spectrometer, IsoPrime; Lake level; land use change; Livingstone piston corer; Llanos de Moxos; LPC; LR398; Nitrogen, total; Shallow lake; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 358 data points
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  • 69
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    Carbon and Nitrogen concentrations in sediment core LR400 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bolivian Amazon; Carbon, total; Carbon/Nitrogen ratio; climate; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Element analyser CNS, vario EL Cube; GCUWI; Gravity corer, UWITEC; Lake level; land use change; Llanos de Moxos; LR400; Nitrogen, total; Shallow lake
    Type: Dataset
    Format: text/tab-separated-values, 625 data points
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  • 70
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    Grain size analysis of sediment core LR398 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bolivian Amazon; climate; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Grain size, Mastersizer 2000, Malvern Instrument Inc., Corg free; Grain size, mean; Lake level; land use change; Livingstone piston corer; Llanos de Moxos; LPC; LR398; Median, grain size; Mode, grain size; Shallow lake; Size fraction 0.002-0.00002 mm; Size fraction 0.063-0.002 mm, silt, mud; Size fraction 2.000-0.063 mm, sand
    Type: Dataset
    Format: text/tab-separated-values, 456 data points
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  • 71
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    Grain size analysis of sediment core LR400 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bolivian Amazon; climate; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GCUWI; Grain size, Mastersizer 2000, Malvern Instrument Inc., Corg free; Grain size, mean; Gravity corer, UWITEC; Lake level; land use change; Llanos de Moxos; LR400; Median, grain size; Mode, grain size; Shallow lake; Size fraction 0.002-0.00002 mm; Size fraction 0.063-0.002 mm, silt, mud; Size fraction 2.000-0.063 mm, sand
    Type: Dataset
    Format: text/tab-separated-values, 1000 data points
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  • 72
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    Water content of sediment core LR398 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bolivian Amazon; climate; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Lake level; land use change; Livingstone piston corer; Llanos de Moxos; LPC; LR398; Shallow lake; Water content, wet mass; Weight loss after drying
    Type: Dataset
    Format: text/tab-separated-values, 447 data points
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  • 73
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    Element analysis of sediment core LR398 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Aluminium; Argon; Barium; Bolivian Amazon; Calcium; Chromium; climate; Copper; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Elements, total; Iron; Lake level; land use change; Livingstone piston corer; Llanos de Moxos; LPC; LR398; Manganese; Mean squared error; Neodymium; Nickel; Potassium; Rubidium; Samarium; Shallow lake; Silicon; Strontium; Terbium; Thulium; Titanium; X-ray fluorescence ITRAX core scanner, Mo-tube 35kV 35mA 10s; Yttrium; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 19604 data points
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  • 74
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    Water content of sediment core LR400 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Bolivian Amazon; climate; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GCUWI; Gravity corer, UWITEC; Lake level; land use change; Llanos de Moxos; LR400; Shallow lake; Water content, wet mass; Weight loss after drying
    Type: Dataset
    Format: text/tab-separated-values, 372 data points
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  • 75
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    Element analysis of sediment core LR400 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Aluminium; Argon; Barium; Bolivian Amazon; Calcium; Chromium; climate; Copper; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Elements, total; GCUWI; Gravity corer, UWITEC; Iron; Lake level; land use change; Llanos de Moxos; LR400; Manganese; Mean squared error; Neodymium; Nickel; Potassium; Rubidium; Samarium; Shallow lake; Silicon; Strontium; Terbium; Thulium; Titanium; X-ray fluorescence ITRAX core scanner, Mo-tube 35kV 35mA 10s; Yttrium; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 15834 data points
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  • 76
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    Biogenic Silica concentration in sediment core LR400 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: Aluminium; Bolivian Amazon; climate; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; GCUWI; Gravity corer, UWITEC; ICP-OES; Iron; Lake level; land use change; Llanos de Moxos; LR400; Sample ID; Shallow lake; Silicon
    Type: Dataset
    Format: text/tab-separated-values, 216 data points
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  • 77
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    Salinity, pH, sea water temperature, pCO2, Omega Aragonite, and DIC determination in the Gulf of Papagayo (Culebra Bay), Costa Rica (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: aragonite saturation state; Aragonite saturation state; Calculated based on the ƒCO2 and the pH; Carbon, inorganic, dissolved; Carbon dioxide, partial pressure; Corals; Costa Rica; DATE/TIME; DEPTH, water; dissolved oxygen; Gulf of Papagayo; Gulf of Papagayo, Culebra Bay, Costa Rica; Leibniz Centre for Tropical Marine Research; Marina_Papagayo; Multiprobe, WTW 340i; Orion ROSS electrode and an Orion StarTM; Oxygen; pCO2; pH; Salinity; Sea surface temperature; SUNDANS; Surface UNderway carbon Dioxide partial pressure ANalySer; Time in days; Upwelling; WTW Cond 3310; ZMT
    Type: Dataset
    Format: text/tab-separated-values, 504 data points
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  • 78
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    Morphological measurements and video annotation of the new octocoral Swiftia phaeton sp. nov. during the cruise MSM 16-3 Phaeton in 2010 off the Mauritanian Slope (2020)
    PANGAEA
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    Publication Date: 2023-03-13
    Description: Swiftia phaeton, a new species, is described for Mauritania where it is endemic at the upper bathyal. This azooxanthellate octocoral is distinctive from congeneric species in the NE Atlantic and Mediterranean Sea by the dark red coloration of the colonies and polyps, the presence of a layer of rod sclerites on top of the calyces and different sizes of polyps and sclerites. Coral gardens dominated by a species of the genus Swiftia Duchassaing & Michelotti, 1864 were filmed for the first time it the southern NE Atlantic Ocean. The extensive Swiftia phaeton sp. nov. dominated habitats were recorded during the Phaeton expedition onboard Maria S. Merian in 2010 at the Mauritanian Slope between 20°24N and 17°54N in 470 - 640 m depth, co-occurring with the framework-forming scleractinians Lophelia pertusa (Linnaeus, 1758) and Madrepora oculata (Linnaeus, 1758). ROV video annotation based on size and density distribution of Swiftia enabled the characterization of the new biotope.
    Keywords: ATLAS; A Trans-Atlantic assessment and deep-water ecosystem-based spatial management plan for Europe; Coral garden; Mauritania; NW Africa; Octocorallia; Plexauridae; Taxonomy.; vulnerable marine ecosystem (VME).
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 79
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    Surface mass balance stake measurements from 2014-2015 on Gourdon Glacier, Antarctic Peninsula (2020)
    PANGAEA
    In:  Friedrich-Alexander-Universität, Erlangen-Nürnberg
    Details
    Publication Date: 2023-03-13
    Keywords: Ablation; ALTITUDE; Antarctic Peninsula; Center; Center_Stake_2014to2015; DATE/TIME; Event label; Front; Front_Stake_2014to2015; Glaciological mass balance; James Ross Island; LATITUDE; Latitude 2; LONGITUDE; Longitude 2; North; North_Stake_2014to2015; Optional event label; S-C-1; S-C-1_Stake_2014to2015; S-C-2; S-C-2_Stake_2014to2015; S-C-2-1; S-C-2-1_Stake_2014to2015; S-C-3; S-C-3_Stake_2014to2015; S-C-4; S-C-4_Stake_2014to2015; S-C-5; S-C-5_Stake_2014to2015; S-F-3; S-F-3_Stake_2014to2015; S-F-4; S-F-4_Stake_2014to2015; S-F-5; S-F-5_Stake_2014to2015; SMB; South; South_Stake_2014to2015; Surface mass balance, ice equivalent; S-W-1; S-W-1_Stake_2014to2015; S-W-2; S-W-2_Stake_2014to2015; S-W-3; S-W-3_Stake_2014to2015; S-W-4; S-W-4_Stake_2014to2015; S-W-5; S-W-5_Stake_2014to2015; S-W-6; S-W-6_Stake_2014to2015; West; West_Stake_2014to2015
    Type: Dataset
    Format: text/tab-separated-values, 60 data points
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  • 80
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    Strontium, carbon and oxygen isotope composition of microdrilled carbonate veins from serpentinites and ophicalcites form the Northern Apennine ophiolite sequence (2020)
    PANGAEA
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    Publication Date: 2023-03-13
    Keywords: Calculated after Friedman & O'Neil (1977); Carbon; Cava_dei_Marmi; Cava_Galli_2; Event label; Latitude of event; Location; Longitude of event; major and trace element data; ophicalcites; Oxygen; Sample ID; serpentinites; Strontium, particulate; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation; Temperature, calculated; Type; Vein; δ13C; δ13C, standard deviation; δ18O; δ18O, water; δ18O, water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 243 data points
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  • 81
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    Surface mass balance stake measurements from 2016-2017 on Gourdon Glacier, Antarctic Peninsula (2020)
    PANGAEA
    In:  Friedrich-Alexander-Universität, Erlangen-Nürnberg
    Details
    Publication Date: 2023-03-13
    Keywords: Ablation; ALTITUDE; Antarctic Peninsula; Center; Center_Stake_2016to2017; Center-2; Center-2_Stake_2016to2017; DATE/TIME; Event label; Glaciological mass balance; James Ross Island; LATITUDE; Latitude 2; LONGITUDE; Longitude 2; Optional event label; S-C-3; S-C-3_Stake_2016to2017; S-C-4; S-C-4_Stake_2016to2017; SMB; Surface mass balance, ice equivalent; S-W-2; S-W-2_Stake_2016to2017; S-W-3; S-W-3_Stake_2016to2017; S-W-4; S-W-4_Stake_2016to2017; S-W-5; S-W-5_Stake_2016to2017; SWW6; SWW6_Stake_2016to2017
    Type: Dataset
    Format: text/tab-separated-values, 27 data points
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  • 82
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    Oxygen, hydrogen and strontium isotope compositions from serpentinites and ophicalcites form the Northern Apennine ophiolite sequence (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-13
    Keywords: Bonassola_1; Bonassola_2; Bracco_Pass; Carbon; Carro_old_mining_site; Castagnola; Cava_dei_Marmi; Cava_Galli_2; Cava_Piazza; Event label; Latitude of event; Libiola_old_mining_site; Location; Longitude of event; major and trace element data; ophicalcites; Oxygen; Punta_dei_Marmi; Reference/source; Road_SS332_Profile_2; Road_SS332_Profile_4; Road_SS332_Profile_5; Rock type; Sample ID; serpentinites; Strontium, particulate; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, standard deviation; Unit; δ18O; δ18O, standard deviation; δ Deuterium
    Type: Dataset
    Format: text/tab-separated-values, 435 data points
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  • 83
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    Current meter and temperature time series (2017/2018) from mooring ET1 south of Azores (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Description: Data set of current meter and temperature logger mooring deployed at position 30°29.04'N, 30°11.7'W, in 4530m water depth. Record starts on Aug 8, 2017, ends May, 10, 2018. Instruments at 299m (ADCP/SBE56), 609m (Aquadopp/SBE56), 1027m (Aquadopp/SBE56), 1426m (Aquadopp/SBE39+), 2053m (Aquadopp/SBE39+), 2889m (Aquadopp/SBE39+), 3729m (Aquadopp/SBE39+), 4566m (Aquadopp/SBE39+).
    Keywords: currents; Current velocity, east-west; Current velocity, north-south; Current velocity, vertical; DATE/TIME; DEPTH, water; Device type; ENERGY TRANSFER; MOOR; Moor_ET1; Mooring; POS516; POS516_4-1; POS523; POS523_2-1; Poseidon; Pressure, water; See Device type column; South Atlantic Ocean; Temperature; Temperature, water; Time series; TRR181; TRR181 Energy transfers in Atmosphere and Ocean
    Type: Dataset
    Format: text/tab-separated-values, 5535740 data points
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  • 84
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    Depth distribution of dissolved zirconium in the (sub)tropical Atlantic (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Description: Dissolved zirconium (Zr) is present in open-ocean seawater in low pmol/kg concentrations and studies for the Pacific Ocean reported an increase in concentration with depth although Zr is characterized as being particle-reactive. We observed the same pattern in this study and report the first data on dissolved Zr in the (sub)tropical Atlantic Ocean. We analyzed dissolved Zr in 194 Atlantic seawater samples (0.2 µm filtered) collected at 16 stations located in the (sub)tropical Atlantic during GEOTRACES cruise M81/1 (GEOTRACES cruise GA11, RV Meteor, 04.02.-08.03.2010). Seawater samples were collected with a trace metal clean CTD and filtration, subsampling and acidification was performed in the clean laboratory container onboard. Measurements were done using our newly developed online-preconcentration method for the SeaFAST-system (ESI, seaFAST 1) with subsequent analysis by quadrupole inductively coupled plasma-mass spectrometry (Perkin-Elmer, ELAN DRC-e). Details on the preconcentration of Zr and the analytical measurement are provided in Poehle et al. 2015 (doi:10.1016/j.dsr.2014.11.014). Our results showed an increase in dissolved Zr with depth with some distinct maxima at intermediate depths along a NE-SW transect (30°N to 12°S) in the Atlantic. Surface depletion was less pronounced along the Atlantic SE-NW transect (12°S to 8°N) and disappeared almost completely at the northernmost station at 8°N. We suggest that dust deposited off West Africa scavenged Zr from surface waters and riverine discharge from the Amazon may represent a source to the West Atlantic. The correlation of Zr with Si hints to a coupling of Zr to the uptake and release on and from Si particles such as biogenic opal. Remineralization of Si-particulates in deep waters release Zr which seems to be stabilized in the dissolved phase by complexation with e.g. organic ligands. This is supported by a sequential filtration approach (0.2 µm and 0.015 µm filter pore size) on seawater samples collected in the Pacific Ocean (research cruise SO229, 2011) showing that up to 91% of dissolved Zr in deep waters are present in the fraction 〈 0.015 µm. Hence, truly dissolved or colloidally bound Zr seems to a reasonable explanation for the observed increase in concentration with depth. Submitted data include the date of sample collection, geographic coordinates, depth and the concentration of dissolved Zr in pmol/kg.
    Keywords: biogeochemistry; Canarias Sea; Comment; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; GEOTRACES; high field strength elements (HFSE); Latitude of event; Longitude of event; M81/1; M81/1_106; M81/1_114; M81/1_118; M81/1_124; M81/1_129; M81/1_137; M81/1_141; M81/1_149; M81/1_156; M81/1_162; M81/1_170; M81/1_174; M81/1_180; M81/1_189; M81/1_202; M81/1_205; Meteor (1986); Sample code/label; Sample ID; South Atlantic Ocean; Station label; water depth profiles; Zirconium, dissolved
    Type: Dataset
    Format: text/tab-separated-values, 772 data points
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  • 85
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    Surface mass balance stake measurements from 2015-2016 on Gourdon Glacier, Antarctic Peninsula (2020)
    PANGAEA
    In:  Friedrich-Alexander-Universität, Erlangen-Nürnberg
    Details
    Publication Date: 2023-03-13
    Keywords: Ablation; ALTITUDE; Antarctic Peninsula; Center; Center_Stake_2015to2016; Center-2; Center-2_Stake_2015to2016; DATE/TIME; Event label; Front; Front_Stake_2015to2016; Glaciological mass balance; James Ross Island; LATITUDE; Latitude 2; LONGITUDE; Longitude 2; North; North_Stake_2015to2016; Optional event label; S-C-2-1; S-C-2-1_Stake_2015to2016; S-C-3; S-C-3_Stake_2015to2016; SMB; South; South_Stake_2015to2016; Surface mass balance, ice equivalent; S-W-1; S-W-1_Stake_2015to2016; S-W-2; S-W-2_Stake_2015to2016; S-W-3; S-W-3_Stake_2015to2016; S-W-4; S-W-4_Stake_2015to2016; S-W-6; S-W-6_Stake_2015to2016; West; West_Stake_2015to2016; West-2; West-2_Stake_2015to2016
    Type: Dataset
    Format: text/tab-separated-values, 42 data points
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  • 86
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    Surface mass balance stake measurements from 2014-2017 on Gourdon Glacier, Antarctic Peninsula (2020)
    PANGAEA
    In:  Friedrich-Alexander-Universität, Erlangen-Nürnberg
    Details
    Publication Date: 2023-03-13
    Description: These data report surface mass balance (SMB) stake measurements at the frontal part of Gourdon Glacier on James Ross Island, northern Antarctic Peninsula. The measurements were conducted by drilling stakes made of bamboo or aluminium into the ice. Changes in the height above the glacier surface were measured in yearly field campaigns during January/February from 2014 until 2017. The resulting height differences in meter ice equivalents [SMB (m i.e.)] are presented together with the coordinates [Latitude Start (°)], [Longitude Start (°)], [Latitude End (°)], [Longitude End (°)] and the elevation in regard to the WGS84 ellipsoid [Altitude Start (m)] and [Altitude End (m)] for the start and the end date of each measurement period. GNSS measurements were done with a single-frequency hand-held Garmin GPS 60. The mass balance measurements were not corrected for movement within one yearly measurement period.
    Keywords: Ablation; Antarctic Peninsula; Glaciological mass balance; James Ross Island; SMB
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 87
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    Surface drifter data from Meteor cruise M160 (2020)
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    Publication Date: 2023-03-13
    Description: Surface current drifters were deployed east of Brava island (Cape Verde archipelago, Atlantic ocean) from the RV Meteor during the cruise M160, which took place between 22. November and 20. December 2019. The drifters were deployed in 3 clusters with 3 drifters per cluster. The utilized drifters are the MD03i from Albatros Marine Technologies, Spain. They have a cylinder shape with a 10 cm diameter and 32 cm length. About 8 cm protrude from the water surface and a drogue of both 50 cm length and diameter is attached to each drifter 50 cm below the sea surface so that difter represent currents in the upper 1 m surface layer. The drifter obtains the GPS position and transmits it via the satellite communication system Iridium to the vessel. The overall ratio of drag area inside to drag area outside the water is 33.2.
    Keywords: GEOMAR; Helmholtz Centre for Ocean Research Kiel; Helmholtz-Zentrum Geesthacht, Institute of Coastal Research; HZG
    Type: Dataset
    Format: application/zip, 9 datasets
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  • 88
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    Bulk rock and mineral chemical data from serpentinites and ophicalcites form the Northern Apennine ophiolite sequence (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-13
    Description: This data set includes the supplementary data to Schwarzenbach et al., subm., Journal of Geophysical Research. I includes major and trace element bulk rock data, rare earth element bulk rock data, bulk rock radiogenic strontium isotope, stable oxygen and hydrogen isotope data of serpentinites and ophicalcites from the Northern Apennine ophiolite sequence in Italy. In situ mineral data include rare earth element data and electron microprobe data of serpentine, amphibole, chlorite and talc. Carbonate vein data of microdrilled veins include radiogenic strontium isotope data and stable carbon and oxygen data.
    Keywords: Carbon; major and trace element data; ophicalcites; Oxygen; serpentinites
    Type: Dataset
    Format: application/zip, 8 datasets
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  • 89
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    Spatial and temporal Oxygen, pH and CO2 dynamics in shallow (〈10cm) salt marsh tidal ponds (2020)
    PANGAEA
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    Publication Date: 2023-03-14
    Description: Profiles and time-series of Oxygen, pH and CO2 was measured in situ in shallow (〈10cm) tidal ponds located in the salt marshes of the Plum Island Estuary, MA, USA. The investigation was conducted using a novel needle optode profiling system from PreSens GmBH with an Automated Micromanipulator and needle-type optodes for measurements of oxygen (PM-PSt7), pH (PM-HP5), and CO2 (PM-CDM1 prototypes), respectively. The data provide novel information about the spatial and temporal variation of oxygen, pH and CO2 in water and sediment, driven by microphytobenthic photosynthesis and respiration. These parameters vary markedly throughout the day due to changes in light availability and temperature. The data characterizes salt marsh tidal ponds as a habitat with extreme oxygen dynamics. Data includes 1) In situ Oxygen, pH and CO2 profiles across the sediment-water interface in shallow salt marsh tidal ponds at 3 different times of the day; morning, afternoon and night, respectively; 2) Oxygen and pH profiles across the sediment-water interface under different light regimes; 0. 25, 150, 350 PAR (0 μmol photons m−2 s−1), respectively; 3) In situ time series of Oxygen, pH and temperature in shallow salt marsh tidal ponds.; 4) Oxygen profiles across the sediment-water interface in shallow salt marsh tidal ponds under different in situ light regimes, determined by a natural layer of seafoam covering the water surface.; 5) In situ oxygen profiles across the sediment-water interface in 3 different tidal ponds in the Plum Island Estuary.; 6) Oxygen profiles across the sediment-water interface in three different habitats in salt marshes: a) Tidal river; submerged sediment. b) Tidal ponds; submerged sediment and c) Vegetated marsh platform; intertidal.
    Keywords: Center for Marine Environmental Sciences; CO2; MARUM; Oxygen; pH; profiles; salt marsh; tidal pond
    Type: Dataset
    Format: application/zip, 13 datasets
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  • 90
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    Shell morphometrics and physicochemical conditions during CO2 acidified seawater laboratory experiment and field experiment of flat tree oysters, Isognomon alatus (Gmelin, 1791) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: The emission of anthropogenic carbon dioxide leads to the lowering of seawater pH. Ocean acidification is a major problem for marine calcifying organisms. There is a need to study short- and long-term effects of lowered pH on marine organisms such as oysters. Oysters are an important food source and useful for nutrients recycling in the coastal estuarine environments. The coastal estuarine environment such as mangrove ecosystems connected to the Sargasso Sea, Ferry Reach, Bermuda, has a natural variation of pH according to the changes in tidal regime (thus low and high tide activities). The unique environment serves as a model place to carry out the effect of changing pH on a marine organism such as flat tree oysters inhabiting this coastal ecosystem. For the laboratory experiment, a total of 84 specimens of the flat tree oyster, Isognomon alatus, were randomly collected on 21 January 2009 from rocks exposed at low tide in Mullet Bay, an intertidal mudflat, St. George, Bermuda (latitude: 32° 22' 30'' N, longitude: 64° 41' 35''W). An experiment was performed to test the effect of projected future pH decrease in a seawater flow-through system at Bermuda Institute of Ocean Sciences (BIOS) for a short period (February to April 2009). Physicochemical conditions (seawater temperature, salinity, pH and oxygen concentration) in three control tanks (C1, C2, C3, pH = 8.1 - 8.2) and three acidification tanks (T1, T2, T3, pH = 7.8 - 7.9) used for the culture of the oysters were recorded. Changes in shell morphometrics of the oysters were determined. For the field experiment, 42 specimens of I. alatus were randomly placed in 6 tanks (approx. n = 7 oysters/tank). Two tanks were then positioned along the transect at each station (A, B ,C) in Mangrove Bay, Bermuda. The shell parameters of flat tree oysters and physicochemical conditions were monitored biweekly.
    Keywords: acidification; Bermuda; Bermuda, Atlantic Ocean; bivalves growth; coastal estuarine; Environmental variables; EXP; Experiment; flat tree oyster; Isognomon alatus; Knife; KNIFE; Mangrove Bay; MangroveBay_A; MangroveBay_B; MangroveBay_C; manipulated CO2; MulletBay; pH variation; seawater flow through system; Shell morphometrics; Station A; Station B; Station C; Tidal regime
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 91
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    Controlled lacustrine microcosms show a brGDGT response to environmental perturbations. Lipid data (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: In this work we used controlled microcosms to study the effect of temperature and pH on brGDGTs in lake water. We collected surface water from Kennedy Lake, Tucson, AZ, a shallow eutrophic artificial reservoir previously described by Martínez-Sosa & Tierney (2019). From the collected samples we set up a series of microcosms, consisting of 1L glass flasks filled with lake water, and manipulated single environmental factors including temperature and pH. For our temperature incubations, we selected four conditions (9C, 18C, 27C and 35C) and incubated 3 1L flasks under each condition for two periods of time (4 or 6 weeks). For the pH incubations, we used commercially available freshwater aquarium non-phosphate buffers (Proprietary composition, Seachem, Madison, GA, USA) to manipulate the pH of the microcosms. For these experiments we targeted four pH conditions (4, 5, 6 and 7), and included two control samples: one where we added enough buffer to maintain the initial pH (Control + Buffer), and another to which we added no buffer (Control - Buffer). GDGTs were analyzed on an Agilent 1260 Infinity HPLC coupled to an Agilent 6120 single quadrupole mass spectrometer using two BEH HILIC silica columns (2.1 x 150 mm, 1.7 um; Waters) and the methodology of Hopmans et al. (2016). We calculated peak areas using the MATLAB package software ORIGAmI (Fleming et al. 2016) and estimated the concentration of brGDGTs by comparing the obtained peaks with a C46 internal standard (Huguet et al. 2006) normalized to the volume of each sample.
    Keywords: Branched glycerol dialkyl glycerol tetraether; Branched glycerol dialkyl glycerol tetraether, Ia; Branched glycerol dialkyl glycerol tetraether, Ib; Branched glycerol dialkyl glycerol tetraether, Ic; Branched glycerol dialkyl glycerol tetraether, IIa; Branched glycerol dialkyl glycerol tetraether, IIa'; Branched glycerol dialkyl glycerol tetraether, IIb; Branched glycerol dialkyl glycerol tetraether, IIb'; Branched glycerol dialkyl glycerol tetraether, IIIa; Branched glycerol dialkyl glycerol tetraether, IIIa'; brGDGTs; Calculated; Cyclization ratio of branched tetraethers; Degree of cyclisation; Experiment; Incubation duration; Isomer ratio; Kennedy_Lake_water_microcosm; Laboratory experiment; lakes; Methylation index of 5-methyl branched glycerol dialkyl glycerol tetraether; microcosms; pH; Sample ID; Standard deviation; Temperature; Temperature, water; Tucson, Arizona, USA
    Type: Dataset
    Format: text/tab-separated-values, 528 data points
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  • 92
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    Geochemistry of the CAU core (drilled 2015-2017): C and O isotopes, TOC and CaCO3 - Aptian - Betic Cordillera, Alicante, Spain (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: A high-resolution carbonate C-isotope (δ13Ccarb) stratigraphy for the Aptian is presented for the Cau core from Alicante, Spain. The studied succession, lower to upper Aptian, embraces the record of the Early Aptian OAE 1a. The data provided includes δ13Ccarb, δ18O isotopes, Total Organic Carbon (TOC) and CaCO3. Four overlapping cores (D1 to D4) were drilled with an almost 100% recovery of a total (corrected for dip) thickness of 143 m. The cores were split in two parts. One half was described, photographed and scanned, and then sampled with a drill to obtain powdered samples for geochemical analyses. Also, small solid samples were taken from the drill for biostratigraphic characterization of the nannofossil and planktonic foraminifera associations. Second half was stored for archive and future research.
    Keywords: Almadich formation; Aptian; Automatic calcimeter (DREAM Électronique SAS , Pessac, France); Calcium carbonate; C and O isotopes; Carbon, organic, total; Cau_Core-D1; Cau_Core-D2; Cau_Core-D3; Cau_Core-D4; Cau-core; CO3Ca; DEPTH, sediment/rock; Event label; Hemipelagic sedimentation; Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL IV; OAE 1a; RDC; Rock drill core; Sample ID; Shimadzu TOC-V CSH total organic carbon analyzer; TOC; δ13C; δ18O
    Type: Dataset
    Format: text/tab-separated-values, 3121 data points
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  • 93
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    Electric conductivity and pH of groundwater in dug- and drill wells on Gili Air, Indonesia (Feb - June 2020) (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: Measured electrical conductivity and pH are given from 119 dug- and drill wells (Gili Air). The data was obtained during the fieldwork for a Master Thesis (Hydrogeology, University Bremen) in cooperation with the Leibniz Centre for Tropical Marine Research during February and June 2020.
    Keywords: Calculated average/mean values; Calculated standard error; Conductivity, electrical; Date/Time of event; DEPTH, water; Depth, well; Event label; Gili_Air_Well1; Gili_Air_Well10; Gili_Air_Well100; Gili_Air_Well101; Gili_Air_Well102; Gili_Air_Well103; Gili_Air_Well104; Gili_Air_Well105; Gili_Air_Well106; Gili_Air_Well107; Gili_Air_Well108; Gili_Air_Well109; Gili_Air_Well11; Gili_Air_Well110; Gili_Air_Well111; Gili_Air_Well112; Gili_Air_Well113; Gili_Air_Well114; Gili_Air_Well115; Gili_Air_Well116; Gili_Air_Well117; Gili_Air_Well118; Gili_Air_Well12; Gili_Air_Well13; Gili_Air_Well14; Gili_Air_Well15; Gili_Air_Well16; Gili_Air_Well18; Gili_Air_Well19; Gili_Air_Well2; Gili_Air_Well20; Gili_Air_Well21; Gili_Air_Well22; Gili_Air_Well23; Gili_Air_Well24; Gili_Air_Well25; Gili_Air_Well26; Gili_Air_Well27; Gili_Air_Well28; Gili_Air_Well29; Gili_Air_Well3; Gili_Air_Well30; Gili_Air_Well31; Gili_Air_Well32; Gili_Air_Well4; Gili_Air_Well40; Gili_Air_Well41; Gili_Air_Well42; Gili_Air_Well43; Gili_Air_Well44; Gili_Air_Well46; Gili_Air_Well47; Gili_Air_Well48; Gili_Air_Well49; Gili_Air_Well50; Gili_Air_Well51; Gili_Air_Well52; Gili_Air_Well53; Gili_Air_Well54; Gili_Air_Well55; Gili_Air_Well56; Gili_Air_Well57; Gili_Air_Well58; Gili_Air_Well59; Gili_Air_Well6; Gili_Air_Well60; Gili_Air_Well61; Gili_Air_Well62; Gili_Air_Well63; Gili_Air_Well64; Gili_Air_Well64B; Gili_Air_Well65; Gili_Air_Well66; Gili_Air_Well67; Gili_Air_Well68; Gili_Air_Well69; Gili_Air_Well7; Gili_Air_Well70; Gili_Air_Well71; Gili_Air_Well72; Gili_Air_Well73; Gili_Air_Well74; Gili_Air_Well76; Gili_Air_Well77; Gili_Air_Well78; Gili_Air_Well79; Gili_Air_Well8; Gili_Air_Well80; Gili_Air_Well81; Gili_Air_Well82; Gili_Air_Well83; Gili_Air_Well84; Gili_Air_Well85; Gili_Air_Well86; Gili_Air_Well87; Gili_Air_Well88; Gili_Air_Well89; Gili_Air_Well9; Gili_Air_Well90; Gili_Air_Well91; Gili_Air_Well92; Gili_Air_Well93; Gili_Air_Well94; Gili_Air_Well95; Gili_Air_Well96; Gili_Air_Well97; Gili_Air_Well98; Gili_Air_Well99; groundwater; Latitude of event; Leibniz Centre for Tropical Marine Research; Lombok, Indonesia; Longitude of event; pH; Sample comment; Sampling Well; SE; Waterhead, below ground; WELL; ZMT
    Type: Dataset
    Format: text/tab-separated-values, 721 data points
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  • 94
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    Ion concentrations of groundwater on Gili Air and Trawangan (Indonesia) in June 2020 (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: The chemical analysis of major and minor ions of groundwater from dug- and drill wells (8 Wells in Gili Air, 5 Wells in Gili Trawangan, and Rain) is presented. The data was collected during the fieldwork for a Master Thesis (Hydrogeology, University Bremen) in cooperation with the Leibniz Centre for Tropical Marine Research in June 2020.
    Keywords: Bicarbonate ion; Bromide; Calcium; Chloride; Date/Time of event; Event label; Fluoride; Gili_Air_A; Gili_Air_B; Gili_Air_C; Gili_Air_D; Gili_Air_E; Gili_Air_F; Gili_Air_G; Gili_Air_H; Gili_Air_I; Gili_Air_Rain; Gili_Trawangan_T1; Gili_Trawangan_T2; Gili_Trawangan_T3; Gili_Trawangan_T4; Gili_Trawangan_T5; groundwater; Latitude of event; Leibniz Centre for Tropical Marine Research; Location; Lombok, Indonesia; Longitude of event; Magnesium; Nitrate; pH; Potassium; Salinity; Sample comment; Sample method; Sampling Well; Sodium; Sulfate; Temperature, water; WELL; ZMT
    Type: Dataset
    Format: text/tab-separated-values, 255 data points
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    DATA PANGAEA
  • 95
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    Unknown
    Seabed photographs taken along OFOBS profile PS118_7-1 during RV POLARSTERN cruise PS118 (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: DATE/TIME; DEPTH, water; File name; File size; LATITUDE; LONGITUDE; Ocean Floor Observation System; OFOS; Polarstern; PS118; PS118_7-1; Type; Uniform resource locator/link to file; Uniform resource locator/link to image; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 1435 data points
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  • 96
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    Unknown
    Seabed photographs taken along OFOBS profile PS118_6-9 during RV POLARSTERN cruise PS118 (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: DATE/TIME; DEPTH, water; File name; File size; LATITUDE; LONGITUDE; Ocean Floor Observation System; OFOS; Polarstern; PS118; PS118_6-9; Type; Uniform resource locator/link to file; Uniform resource locator/link to image; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 7010 data points
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  • 97
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    Seabed photographs taken along OFOBS profile PS118_8-1 during RV POLARSTERN cruise PS118 (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: Antarctica; Antarctic Peninsula; Corals; DATE/TIME; DEPTH, water; File name; File size; LATITUDE; LONGITUDE; Ocean Floor Observation System; OFOBS; OFOS; Polarstern; PS118; PS118_8-1; seafloor images; Sponges; Type; Uniform resource locator/link to file; Uniform resource locator/link to image; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 4805 data points
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  • 98
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    Unknown
    Seabed photographs taken along OFOBS profile PS118_77-1 during RV POLARSTERN cruise PS118 (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: Antarctica; Antarctic Peninsula; Corals; DATE/TIME; DEPTH, water; File name; File size; LATITUDE; LONGITUDE; Ocean Floor Observation System; OFOBS; OFOS; Polarstern; PS118; PS118_77-1; Scotia Sea; seafloor images; Sponges; Type; Uniform resource locator/link to file; Uniform resource locator/link to image
    Type: Dataset
    Format: text/tab-separated-values, 790 data points
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  • 99
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    Unknown
    Seabed photographs taken along OFOBS profile PS118_11-2 during RV POLARSTERN cruise PS118 (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: Antarctica; Antarctic Peninsula; Corals; DATE/TIME; DEPTH, water; File name; File size; LATITUDE; LONGITUDE; Ocean Floor Observation System; OFOBS; OFOS; Polarstern; PS118; PS118_11-2; seafloor images; Sponges; Type; Uniform resource locator/link to file; Uniform resource locator/link to image; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 3490 data points
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  • 100
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    Unknown
    Seabed photographs taken along OFOBS profile PS118_38-13 during RV POLARSTERN cruise PS118 (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Keywords: Antarctica; Antarctic Peninsula; Corals; DATE/TIME; DEPTH, water; File name; File size; LATITUDE; LONGITUDE; Ocean Floor Observation System; OFOBS; OFOS; Polarstern; PS118; PS118_38-13; seafloor images; Sponges; Type; Uniform resource locator/link to file; Uniform resource locator/link to image; Weddell Sea
    Type: Dataset
    Format: text/tab-separated-values, 1950 data points
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