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  • 1
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    Towards Closing the Polar Gap: New Marine Heat Flow Observations in Antarctica and the Arctic Ocean (2020)
    MDPI
    In:  EPIC3Geosciences, MDPI, 11(1), pp. 1-19, ISSN: 2076-3263
    Details
    Publication Date: 2021-01-03
    Description: The thermal state of the lithosphere and related geothermal heat flow (GHF) is a crucial parameter to understand a variety of processes related to cryospheric, geospheric, and/or biospheric interactions. Indirect estimates of GHF in polar regions from magnetic, seismological, or petrological data often show large discrepancies when compared to thermal in situ observations. Here, the lack of in situ data represents a fundamental limitation for both investigating thermal processes of the lithosphere and validating indirect heat flow estimates. During RV Polarstern expeditions PS86 and PS118, we obtained in situ thermal measurements and present the derived GHF in key regions, such as the Antarctic Peninsula and the Gakkel Ridge in the Arctic. By comparison with indirect models, our results indicate (1) elevated geothermal heat flow (75 ± 5 mW m−2 to 139 ± 26 mW m−2) to the west of the Antarctic Peninsula, which should be considered for future investigations of ice-sheet dynamics and the visco-elastic behavior of the crust. (2) The thermal signature of the Powell Basin characteristic for oceanic crust of an age between 32 and 18 Ma. Further, we propose (3) that at different heat sources at the slow-spreading Gakkel Ridge in the Aurora Vent Field region might explain the geothermal heat flow distribution. We conclude that in situ observations are urgently required to ground-truth and fine-tune existing models and that a multidisciplinary approach is of high importance for the scientific community’s understanding of this parameter
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 2
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    Chloride and sulfate measurements of sediment core GeoB23163-1 from R/V Poseidon expedition POS499 on top of Sartori MV in the Calabrian Arc, Mediterranean Sea (2023)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Description: Here we present a dataset of pore water chloride and sulfate concentrations of gravity core GeoB21363-1 (GC21) recovered during R/V Poseidon cruise POS499 from the summit of Sartori Mud Volcano (Calabrian Arc, Mediterranean Sea). The gravity core was taken in a plastic foil. Pore water was extracted ex-situ from selected sediment depths on whole round plastic foil using disposable syringes and rhizon samplers. The sampling interval was set to 10 cm. The untreated pore water samples of filtered and unacidified aliquots were stored at 4°C until analysis. Concentrations of chloride and sulfate were analyzed by ion chromatography (IC) using a Metrohm 882 Compact Ion Chromatograph with an 858 Professional Sample Processor at MARUM. Uploaded chloride and sulfate concentrations are given in in Millimol/Liter (mmol/L). Sediment depth is given in meter (m).
    Keywords: BC; Box corer; Calabrian accretionary prism; Center for Marine Environmental Sciences; chloride; Chloride; DEPTH, sediment/rock; GeoB23163-1; Ion chromatograph (IC), Metrohm, 882 compact IC; coupled with Professional sample processor, Metrohm, 858; M151; M151_63-1; MARUM; Meteor (1986); Miniaturized Temperature Data Logger; pore water geochemistry; POS499; R/V Poseidon; Sartori mud volcano; sediment temperatures; sulfate; Sulfate
    Type: Dataset
    Format: text/tab-separated-values, 38 data points
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  • 3
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    Temperature measurements of sediment core GeoB23163-1 from R/V Poseidon expedition POS499 on top of Sartori MV in the Calabrian Arc, Mediterranean Sea (2023)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Description: Here we present a dataset of in-situ sediment temperatures of gravity core GeoB21363-1 (GC21) recovered during R/V Poseidon cruise POS499 from the summit of Sartori Mud Volcano (Calabrian Arc, Mediterranean Sea). In-situ temperature was measured using Miniaturized Temperature Data Loggers which were mounted on the core barrel of the gravity corer. In total, five loggers were used and measured temperatures in an interval of 0.5 up to 1 m. The gravity corer remained in the seabed for at least 10 minutes to obtain undisturbed temperature conditions of the seabed. Logger specific serial numbers are listed, penetration depth within the seafloor is given in meter (m) and in-situ temperature is given in Celsius (°C).
    Keywords: BC; Box corer; Calabrian accretionary prism; Center for Marine Environmental Sciences; chloride; DEPTH, sediment/rock; GeoB23163-1; M151; M151_63-1; MARUM; Meteor (1986); Miniaturized Temperature Data Logger; Miniaturized temperature logger; MTL; pore water geochemistry; POS499; R/V Poseidon; Recorder, serial number; Sartori mud volcano; sediment temperatures; sulfate; Temperature, in rock/sediment
    Type: Dataset
    Format: text/tab-separated-values, 10 data points
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  • 4
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    Chloride and sulfate concentrations of sediment core GeoB24370-1 (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: Here we present pore water chloride and sulfate concentrations of several gravity and multi cores measured during R/V Sonne cruise SO278 at Sartori Mud Volcano (Calabrian Arc, Mediterranean Sea) to investigate the mud volcanic activity in more detail. Pore water was extracted ex-situ from selected sediment depths on whole round plastic liners using disposable syringes and rhizon samplers. Sampling interval for pore water measurements of chloride and sulfate ranges from 5 cm (MUC cores) to 10 cm (GC cores). The untreated pore water samples of filtered and unacidified aliquots were stored at 4°C until analysis. Concentrations of chloride and sulfate were analyzed by ion chromatography (IC) using a Metrohm 882 Compact Ion Chromatograph with an 858 Professional Sample Processor at MARUM.
    Keywords: Center for Marine Environmental Sciences; chloride; Chloride; DEPTH, sediment/rock; GC; GeoB24370-1; GPF 19-2-007H; Gravity corer; Ion chromatograph (IC), Metrohm, 882 compact IC; coupled with Professional sample processor, Metrohm, 858; MARUM; Mediterranean Sea; pore water geochemistry; R/V SONNE; Sartori mud volcano; SO278; SO278_70-1; Sonne_2; sulfate; Sulfate
    Type: Dataset
    Format: text/tab-separated-values, 64 data points
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  • 5
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    Chloride and sulfate concentrations of sediment core GeoB24365-1 (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: Here we present pore water chloride and sulfate concentrations of several gravity and multi cores measured during R/V Sonne cruise SO278 at Sartori Mud Volcano (Calabrian Arc, Mediterranean Sea) to investigate the mud volcanic activity in more detail. Pore water was extracted ex-situ from selected sediment depths on whole round plastic liners using disposable syringes and rhizon samplers. Sampling interval for pore water measurements of chloride and sulfate ranges from 5 cm (MUC cores) to 10 cm (GC cores). The untreated pore water samples of filtered and unacidified aliquots were stored at 4°C until analysis. Concentrations of chloride and sulfate were analyzed by ion chromatography (IC) using a Metrohm 882 Compact Ion Chromatograph with an 858 Professional Sample Processor at MARUM.
    Keywords: Center for Marine Environmental Sciences; chloride; Chloride; DEPTH, sediment/rock; GeoB24365-1; GPF 19-2-007H; Ion chromatograph (IC), Metrohm, 882 compact IC; coupled with Professional sample processor, Metrohm, 858; MARUM; Mediterranean Sea; MUC; MultiCorer; pore water geochemistry; R/V SONNE; Sartori mud volcano; SO278; SO278_65-1; Sonne_2; sulfate; Sulfate
    Type: Dataset
    Format: text/tab-separated-values, 16 data points
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  • 6
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    Chloride and sulfate concentrations of sediment core GeoB24376-1 (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: Here we present pore water chloride and sulfate concentrations of several gravity and multi cores measured during R/V Sonne cruise SO278 at Sartori Mud Volcano (Calabrian Arc, Mediterranean Sea) to investigate the mud volcanic activity in more detail. Pore water was extracted ex-situ from selected sediment depths on whole round plastic liners using disposable syringes and rhizon samplers. Sampling interval for pore water measurements of chloride and sulfate ranges from 5 cm (MUC cores) to 10 cm (GC cores). The untreated pore water samples of filtered and unacidified aliquots were stored at 4°C until analysis. Concentrations of chloride and sulfate were analyzed by ion chromatography (IC) using a Metrohm 882 Compact Ion Chromatograph with an 858 Professional Sample Processor at MARUM.
    Keywords: Center for Marine Environmental Sciences; chloride; Chloride; DEPTH, sediment/rock; GeoB24376-1; GPF 19-2-007H; Ion chromatograph (IC), Metrohm, 882 compact IC; coupled with Professional sample processor, Metrohm, 858; MARUM; Mediterranean Sea; MUC; MultiCorer; pore water geochemistry; R/V SONNE; Sartori mud volcano; SO278; SO278_76-1; Sonne_2; sulfate; Sulfate
    Type: Dataset
    Format: text/tab-separated-values, 16 data points
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  • 7
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    Chloride and sulfate concentrations of sediment core GeoB24376-2 (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: Here we present pore water chloride and sulfate concentrations of several gravity and multi cores measured during R/V Sonne cruise SO278 at Sartori Mud Volcano (Calabrian Arc, Mediterranean Sea) to investigate the mud volcanic activity in more detail. Pore water was extracted ex-situ from selected sediment depths on whole round plastic liners using disposable syringes and rhizon samplers. Sampling interval for pore water measurements of chloride and sulfate ranges from 5 cm (MUC cores) to 10 cm (GC cores). The untreated pore water samples of filtered and unacidified aliquots were stored at 4°C until analysis. Concentrations of chloride and sulfate were analyzed by ion chromatography (IC) using a Metrohm 882 Compact Ion Chromatograph with an 858 Professional Sample Processor at MARUM.
    Keywords: Center for Marine Environmental Sciences; chloride; Chloride; DEPTH, sediment/rock; GC; GeoB24376-2; GPF 19-2-007H; Gravity corer; Ion chromatograph (IC), Metrohm, 882 compact IC; coupled with Professional sample processor, Metrohm, 858; MARUM; Mediterranean Sea; pore water geochemistry; R/V SONNE; Sartori mud volcano; SO278; SO278_76-2; Sonne_2; sulfate; Sulfate
    Type: Dataset
    Format: text/tab-separated-values, 50 data points
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  • 8
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    Chloride and sulfate concentrations of sediment core GeoB24302-2 (2023)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Description: Here we present pore water chloride and sulfate concentrations of several gravity and multi cores measured during R/V Sonne cruise SO278 at Sartori Mud Volcano (Calabrian Arc, Mediterranean Sea) to investigate the mud volcanic activity in more detail. Pore water was extracted ex-situ from selected sediment depths on whole round plastic liners using disposable syringes and rhizon samplers. Sampling interval for pore water measurements of chloride and sulfate ranges from 5 cm (MUC cores) to 10 cm (GC cores). The untreated pore water samples of filtered and unacidified aliquots were stored at 4°C until analysis. Concentrations of chloride and sulfate were analyzed by ion chromatography (IC) using a Metrohm 882 Compact Ion Chromatograph with an 858 Professional Sample Processor at MARUM.
    Keywords: Center for Marine Environmental Sciences; chloride; Chloride; DEPTH, sediment/rock; GC; GeoB24302-2; GPF 19-2-007H; Gravity corer; Ion chromatograph (IC), Metrohm, 882 compact IC; coupled with Professional sample processor, Metrohm, 858; MARUM; Mediterranean Sea; pore water geochemistry; R/V SONNE; Sartori mud volcano; SO278; SO278_2-2; Sonne_2; sulfate; Sulfate
    Type: Dataset
    Format: text/tab-separated-values, 40 data points
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  • 9
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    Sediment core description of GeoB24302-2 recovered during R/V Sonne expedition SO278 at Sartori MV in the Calabrian Arc, Mediterranean Sea (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Sediment cores were collected with a gravity corer and a multi corer from several sites at the Sartori Mud Volcano in the Calabrian accretionary prism (Mediterranean Sea) during R/V Sonne expedition SO278. Here we present core descriptions of GeoB24302-2 (GC01). To capture the sedimentary structure, gravity cores were longitudinally split directly after recovery on board of cruise SO278 and the archive halves were photographed using the smartCIS1600 line scan technique of the MARUM GeoB Core repository at a 500-dpi resolution. To investigate lithological changes in more detail, macroscopic core descriptions are prepared for all cores. The core descriptions provide information about core length, position, water depth, core sections, core image, color, lithology, sedimentary structures and a descriptive text. Sediment color was determined qualitatively using Munsell soil color charts.
    Keywords: Center for Marine Environmental Sciences; Core Description; GC; GeoB; GeoB24302-2; GPF 19-2-007H; Gravity corer; Lithology; MARUM; Mediterranean Sea; R/V SONNE; SO278; SO278_2-2; Sonne_2
    Type: Dataset
    Format: application/pdf, 2.1 MBytes
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  • 10
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    Sediment core description of GeoB24376-2 recovered during R/V Sonne expedition SO278 at Sartori MV in the Calabrian Arc, Mediterranean Sea (2023)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Sediment cores were collected with a gravity corer and a multi corer from several sites at the Sartori Mud Volcano in the Calabrian accretionary prism (Mediterranean Sea) during R/V Sonne expedition SO278. Here we present core descriptions of GeoB24302-2 (GC01). To capture the sedimentary structure, gravity cores were longitudinally split directly after recovery on board of cruise SO278 and the archive halves were photographed using the smartCIS1600 line scan technique of the MARUM GeoB Core repository at a 500-dpi resolution. To investigate lithological changes in more detail, macroscopic core descriptions are prepared for all cores. The core descriptions provide information about core length, position, water depth, core sections, core image, color, lithology, sedimentary structures and a descriptive text. Sediment color was determined qualitatively using Munsell soil color charts.
    Keywords: Center for Marine Environmental Sciences; Core Description; GC; GeoB; GeoB24376-2; GPF 19-2-007H; Gravity corer; Lithology; MARUM; Mediterranean Sea; R/V SONNE; SO278; SO278_76-2; Sonne_2
    Type: Dataset
    Format: application/pdf, 2.1 MBytes
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