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  • 2015-2019  (145)
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  • 1
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    HydroC pCO2 measurements during Celtic Explorer cruise CE12010 at station 44ROV12 (Gas Release Experiment) (2019)
    PANGAEA
    Details
    Publication Date: 2023-03-03
    Description: Raw data of pCO2 measurements during Celtic Explorer cruise CE12010 at station 44ROV12 (Gas Release Experiment). The gas discharge of the gas release experiment was observed in situ during a 4 hour dive with GEOMAR's remotely operated vehicle ROV Kiel 6000 equipped with HD camera/video device and a sonar system. The spread of the dissolved CO2 plume was monitored geochemically using the commercial HydroC pCO2 sensor (S/N 0412-006, Kongsberg Maritime Contros GmbH) mounted to the front porch of the ROV. The sensor was calibrated for pCO2 signals up to 3,000 µatm (accuracy ~1% of reading resolution; resolution: 〈30 µatm) and was programmed to measure in 60 s intervals, which is equal to the sensor's response time.
    Keywords: 44ROV12; carbon dioxide; Carbon dioxide, partial pressure; CE12010; CE12010_44; Celtic Explorer; Conductivity; CTD, SEA-BIRD SBE 9 plus; DATE/TIME; Density, mass density; DEPTH, water; ECO2; gas release experiment; geological storage; HydroC pCO2 sensor, CONTROS; Identification; LATITUDE; leakage; LONGITUDE; North Sea; Remote operated vehicle; ROV; Salinity; Sleipner; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 2238 data points
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  • 2
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    High resolution bathymetry of the Red Sea Rift (1 arc-second) from POSEIDON cruise POS408 and PELAGIA cruises 64PE350 and 64PE351 (2016)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Description: Gridded multibeam bathymetry from Poseidon cruise 408 and Pelagia cruises 64PE350 and 64PE351 within the Jeddah Transect Project. The raw-data were post-processed and gridded at a resolution of 30 m with QPS Fledermaus Pro. For smaller file size and better handling 11 tiles were created with GlobalMapper (5 columns, 5 lines).
    Keywords: MB; Multibeam; Red_Sea_Rift; Red Sea
    Type: Dataset
    Format: application/zip, 96.9 MBytes
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  • 3
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    Sediment and water column parameters measured at Boknis Eck (SW Baltic Sea) on a seasonal basis from 2013-2014 (2017)
    PANGAEA
    In:  Supplement to: Maltby, Johanna; Steinle, Lea; Löscher, Carolin R; Bange, Hermann Werner; Fischer, Martin A; Schmidt, Mark; Treude, Tina (2018): Microbial methanogenesis in the sulfate-reducing zone of sediments in the Eckernförde Bay, SW Baltic Sea. Biogeosciences, 15(1), 137-157, https://doi.org/10.5194/bg-15-137-2018
    Details
    Publication Date: 2023-05-03
    Description: The presence of surface methanogenesis, located within the sulfate-reducing zone (0-30 centimeters below seafloor, cmbsf), was investigated in sediments of the seasonally hypoxic Eckernförde Bay, southwestern Baltic Sea. Water column parameters like oxygen, temperature and salinity together with porewater geochemistry and benthic methanogenesis rates were determined in the sampling area 'Boknis Eck' quarterly from March 2013 to September 2014, to investigate the effect of seasonal environmental changes on the rate and distribution of surface methanogenesis and to estimate its potential contribution to benthic methane emissions. Water column parameters where determined via CTD (temperature, salinity, pressure), as well as gas chromatography (methane) and fluorometric methods (chlorophyll a). For porewater and sediment geochemistry various method were used including photometry (sulfide), ion chromatography (sulfate), N/C Analysis (DIC), Carbo-Elba element analysis (POC, C/N), gas chromatography (methane). Sediment net methanogenesis rates were determined via the methane increase (measured with gas chromatography) over time in sediment slurry batch incubations. Sediment hydrogenotrophic methanogenesis was measured by adding radiotracer (14C-bicarbonate) to sediment samples and measuring the production of 14C-methane (via scintillation counting) after a specific period of time. For further details (sample preparation and analysis) see the related publication (Maltby et al., 2017, Biogeosciences Discussions)
    Keywords: Boknis_Eck_2013-14; MULT; Multiple investigations
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 4
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    North Sea Gas Release Experiment with link to ROV video during station CE12010_44 (2019)
    PANGAEA
    In:  Supplement to: Vielstädte, Lisa; Linke, Peter; Schmidt, Mark; Sommer, Stefan; Haeckel, Matthias; Braack, Malte; Wallmann, Klaus (2019): Footprint and detectability of a well leaking CO₂ in the Central North Sea: Implications from a field experiment and numerical modelling. International Journal of Greenhouse Gas Control, 84, 190-203, https://doi.org/10.1016/j.ijggc.2019.03.012
    Details
    Publication Date: 2023-07-07
    Description: Video showing the gas release experiment, which has been conducted at ~80 m water depth in the vicinity of the Sleipner CO2 storage site in the North Sea. The gas discharge was observed in situ during a 4 hour dive with GEOMAR's remotely operated vehicle ROV Kiel 6000 equipped with HD camera/video device.
    Keywords: 44ROV12; carbon dioxide; CE12010; CE12010_44; Celtic Explorer; ECO2; gas release experiment; geological storage; leakage; North Sea; Remote operated vehicle; ROV; Sleipner; Sub-seabed CO2 Storage: Impact on Marine Ecosystems
    Type: Dataset
    Format: video/quicktime, 517.2 MBytes
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  • 5
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    Strike-slip faults mediate the rise of crustal-derived fluids and mud volcanism in the deep sea (2015)
    PANGAEA
    In:  Supplement to: Hensen, Christian; Scholz, Florian; Nuzzo, Marianne; Valadares, Vasco; Gràcia, Eulàlia; Terrinha, Pedro; Liebetrau, Volker; Kaul, Norbert; Silva, Sonia; Martinez-Loriente, Sara; Bartolome, Rafael; Piñero, Elena; Magalhães, Vitor H; Schmidt, Mark; Weise, Stephan M; Cunha, Marina Ribeiro; Hilário, Ana; Perea, Hector; Rovelli, Lorenzo; Lackschewitz, Klas Sven (2015): Strike-slip faults mediate the rise of crustal-derived fluids and mud volcanism in the deep sea. Geology, 43(4), 339-342, https://doi.org/10.1130/G36359.1
    Details
    Publication Date: 2023-09-01
    Description: We report on newly discovered mud volcanoes located at about 4500 m water depth 90 km west of the deformation front of the accretionary wedge of the Gulf of Cadiz, and thus outside of their typical geotectonic environment. Seismic data suggest that fluid flow is mediated by a 〉400-km-long strike-slip fault marking the transcurrent plate boundary between Africa and Eurasia. Geochemical data (Cl, B, Sr, 87Sr/86Sr, Delta18O, DeltaD) reveal that fluids originate in oceanic crust older than 140 Ma. On their rise to the surface, these fluids receive strong geochemical signals from recrystallization of Upper Jurassic carbonates and clay-mineral dehydration in younger terrigeneous units. At present, reports of mud volcanoes in similar deep-sea settings are rare, but given that the large area of transform-type plate boundaries has been barely investigated, such pathways of fluid discharge may provide an important, yet unappreciated link between the deeply buried oceanic crust and the deep ocean.
    Type: Dataset
    Format: application/zip, 5 datasets
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  • 6
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    Time series of methane and carbon dioxide concentrations measured during POSEIDON cruise POS534 (2019)
    PANGAEA
    In:  GEOMAR - Helmholtz Centre for Ocean Research Kiel
    Details
    Publication Date: 2024-02-16
    Keywords: ALTITUDE; Carbon dioxide; Cavity ring down spectrometer, G2301-f, Picarro Inc.; CT; DATE/TIME; LATITUDE; LONGITUDE; Methane; POS534; POS534-track; Poseidon; Position; STEMM-CCS; Strategies for Environmental Monitoring of Marine Carbon Capture and Storage; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 3793188 data points
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  • 7
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    Physical oceanography and pCO2 measurements during POSEIDON cruise POS469 (2015)
    PANGAEA
    Details
    Publication Date: 2024-02-14
    Keywords: Carbon dioxide, partial pressure; Conductivity; CTD, SEA-BIRD SBE 9 plus; CTD/Rosette; CTD-1; CTD-2; CTD-3; CTD-4; CTD-RO; DATE/TIME; DEPTH, water; ECO2; Event label; HydroC pCO2 sensor, CONTROS; LATITUDE; LONGITUDE; Oxygen; Oxygen sensor, SBE 43; pH; pH sensor, SBE 27; POS469; POS469_569; POS469_598; POS469_599; POS469_607; Poseidon; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 1110 data points
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  • 8
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    Physical oceanography and pCO2 measurements during towed Pump-CTD track POS469_572 (PCTD-1) (2015)
    PANGAEA
    Details
    Publication Date: 2024-02-14
    Keywords: Carbon dioxide, partial pressure; Conductivity; CTD, SEA-BIRD SBE 9 plus; DATE/TIME; DEPTH, water; ECO2; HydroC pCO2 sensor, CONTROS; LATITUDE; LONGITUDE; Oxygen; Oxygen sensor, SBE 43; PCTD-RO; pH; pH sensor, SBE 27; POS469; POS469_572; Poseidon; PumpCTD/Rosette; Pump-CTD-1; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 410 data points
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  • 9
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    Physical oceanography and pCO2 measurements during towed Pump-CTD track POS469_577 (PCTD-2) (2015)
    PANGAEA
    Details
    Publication Date: 2024-02-14
    Keywords: Carbon dioxide, partial pressure; Conductivity; CTD, SEA-BIRD SBE 9 plus; DATE/TIME; DEPTH, water; ECO2; HydroC pCO2 sensor, CONTROS; LATITUDE; LONGITUDE; Oxygen; Oxygen sensor, SBE 43; PCTD-RO; pH; pH sensor, SBE 27; POS469; POS469_577; Poseidon; PumpCTD/Rosette; Pump-CTD-2; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 1965 data points
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  • 10
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    Physical oceanography and pCO2 measurements during towed Pump-CTD track POS469_584 (PCTD-3) (2015)
    PANGAEA
    Details
    Publication Date: 2024-02-14
    Keywords: Carbon dioxide, partial pressure; Conductivity; CTD, SEA-BIRD SBE 9 plus; DATE/TIME; DEPTH, water; ECO2; HydroC pCO2 sensor, CONTROS; LATITUDE; LONGITUDE; Oxygen; Oxygen sensor, SBE 43; PCTD-RO; pH; pH sensor, SBE 27; POS469; POS469_584; Poseidon; PumpCTD/Rosette; Pump-CTD-3; Sub-seabed CO2 Storage: Impact on Marine Ecosystems; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 2125 data points
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