Porosity of MeBo sediment cores from the continental margin off Svalbard - cruise MSM57, supplement to: Riedel, Michael; Wallmann, Klaus; Berndt, Christian; Pape, Thomas; Freudenthal, Tim; Bergenthal, Markus; Bünz, S; Bohrmann, Gerhard (2018): In situ temperature measurements at the Svalbard continental margin: Implications for gas hydrate dynamics. Geochemistry, Geophysics, Geosystems, 19(4), 1165-1177
During expedition MARIA S. MERIAN MSM57/2 to the Svalbard margin offshore Prins Karls Forland, the seafloor drill rig MARUM‐MeBo70 was used to assess the landward termination of the gas hydrate system in water depths between 340 and 446 m. The study region shows abundant seafloor gas vents, clustere...
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ftdatacite:10.1594/pangaea.890370 2023-05-15T18:03:33+02:00 Porosity of MeBo sediment cores from the continental margin off Svalbard - cruise MSM57, supplement to: Riedel, Michael; Wallmann, Klaus; Berndt, Christian; Pape, Thomas; Freudenthal, Tim; Bergenthal, Markus; Bünz, S; Bohrmann, Gerhard (2018): In situ temperature measurements at the Svalbard continental margin: Implications for gas hydrate dynamics. Geochemistry, Geophysics, Geosystems, 19(4), 1165-1177 Pape, Thomas Malnati, Janice Bohrmann, Gerhard 2018 application/zip https://dx.doi.org/10.1594/pangaea.890370 https://doi.pangaea.de/10.1594/PANGAEA.890370 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1002/2017gc007288 https://dx.doi.org/10.1038/s41467-017-02550-9 Creative Commons Attribution Non Commercial Share Alike 3.0 Unported https://creativecommons.org/licenses/by-nc-sa/3.0/legalcode cc-by-nc-sa-3.0 CC-BY-NC-SA Center for Marine Environmental Sciences MARUM Supplementary Collection of Datasets Collection article 2018 ftdatacite https://doi.org/10.1594/pangaea.890370 https://doi.org/10.1002/2017gc007288 https://doi.org/10.1038/s41467-017-02550-9 2022-02-08T16:24:46Z During expedition MARIA S. MERIAN MSM57/2 to the Svalbard margin offshore Prins Karls Forland, the seafloor drill rig MARUM‐MeBo70 was used to assess the landward termination of the gas hydrate system in water depths between 340 and 446 m. The study region shows abundant seafloor gas vents, clustered at a water depth of ∼400 m. The sedimentary environment within the upper 100 m below seafloor (mbsf) is dominated by ice‐berg scours and glacial unconformities. Sediments cored included glacial diamictons and sheet‐sands interbedded with mud. Seismic data show a bottom simulating reflector terminating ∼30 km seaward in ∼760 m water depth before it reaches the theoretical limit of the gas hydrate stability zone (GHSZ) at the drilling transect. We present results of the first in situ temperature measurements conducted with MeBo70 down to 28 mbsf. The data yield temperature gradients between ∼38°C km−1 at the deepest site (446 m) and ∼41°C km−1 at a shallower drill site (390 m). These data constrain combined with in situ pore‐fluid data, sediment porosities, and thermal conductivities the dynamic evolution of the GHSZ during the past 70 years for which bottom water temperature records exist. Gas hydrate is not stable in the sediments at sites shallower than 390 m water depth at the time of acquisition (August 2016). Only at the drill site in 446 m water depth, favorable gas hydrate stability conditions are met (maximum vertical extent of ∼60 mbsf); however, coring did not encounter any gas hydrates. Article in Journal/Newspaper Prins Karls Forland Svalbard Svalbard margin DataCite Metadata Store (German National Library of Science and Technology) Klaus ENVELOPE(24.117,24.117,65.717,65.717) Prins Karls Forland ENVELOPE(11.175,11.175,78.543,78.543) Svalbard |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Center for Marine Environmental Sciences MARUM |
spellingShingle |
Center for Marine Environmental Sciences MARUM Pape, Thomas Malnati, Janice Bohrmann, Gerhard Porosity of MeBo sediment cores from the continental margin off Svalbard - cruise MSM57, supplement to: Riedel, Michael; Wallmann, Klaus; Berndt, Christian; Pape, Thomas; Freudenthal, Tim; Bergenthal, Markus; Bünz, S; Bohrmann, Gerhard (2018): In situ temperature measurements at the Svalbard continental margin: Implications for gas hydrate dynamics. Geochemistry, Geophysics, Geosystems, 19(4), 1165-1177 |
topic_facet |
Center for Marine Environmental Sciences MARUM |
description |
During expedition MARIA S. MERIAN MSM57/2 to the Svalbard margin offshore Prins Karls Forland, the seafloor drill rig MARUM‐MeBo70 was used to assess the landward termination of the gas hydrate system in water depths between 340 and 446 m. The study region shows abundant seafloor gas vents, clustered at a water depth of ∼400 m. The sedimentary environment within the upper 100 m below seafloor (mbsf) is dominated by ice‐berg scours and glacial unconformities. Sediments cored included glacial diamictons and sheet‐sands interbedded with mud. Seismic data show a bottom simulating reflector terminating ∼30 km seaward in ∼760 m water depth before it reaches the theoretical limit of the gas hydrate stability zone (GHSZ) at the drilling transect. We present results of the first in situ temperature measurements conducted with MeBo70 down to 28 mbsf. The data yield temperature gradients between ∼38°C km−1 at the deepest site (446 m) and ∼41°C km−1 at a shallower drill site (390 m). These data constrain combined with in situ pore‐fluid data, sediment porosities, and thermal conductivities the dynamic evolution of the GHSZ during the past 70 years for which bottom water temperature records exist. Gas hydrate is not stable in the sediments at sites shallower than 390 m water depth at the time of acquisition (August 2016). Only at the drill site in 446 m water depth, favorable gas hydrate stability conditions are met (maximum vertical extent of ∼60 mbsf); however, coring did not encounter any gas hydrates. |
format |
Article in Journal/Newspaper |
author |
Pape, Thomas Malnati, Janice Bohrmann, Gerhard |
author_facet |
Pape, Thomas Malnati, Janice Bohrmann, Gerhard |
author_sort |
Pape, Thomas |
title |
Porosity of MeBo sediment cores from the continental margin off Svalbard - cruise MSM57, supplement to: Riedel, Michael; Wallmann, Klaus; Berndt, Christian; Pape, Thomas; Freudenthal, Tim; Bergenthal, Markus; Bünz, S; Bohrmann, Gerhard (2018): In situ temperature measurements at the Svalbard continental margin: Implications for gas hydrate dynamics. Geochemistry, Geophysics, Geosystems, 19(4), 1165-1177 |
title_short |
Porosity of MeBo sediment cores from the continental margin off Svalbard - cruise MSM57, supplement to: Riedel, Michael; Wallmann, Klaus; Berndt, Christian; Pape, Thomas; Freudenthal, Tim; Bergenthal, Markus; Bünz, S; Bohrmann, Gerhard (2018): In situ temperature measurements at the Svalbard continental margin: Implications for gas hydrate dynamics. Geochemistry, Geophysics, Geosystems, 19(4), 1165-1177 |
title_full |
Porosity of MeBo sediment cores from the continental margin off Svalbard - cruise MSM57, supplement to: Riedel, Michael; Wallmann, Klaus; Berndt, Christian; Pape, Thomas; Freudenthal, Tim; Bergenthal, Markus; Bünz, S; Bohrmann, Gerhard (2018): In situ temperature measurements at the Svalbard continental margin: Implications for gas hydrate dynamics. Geochemistry, Geophysics, Geosystems, 19(4), 1165-1177 |
title_fullStr |
Porosity of MeBo sediment cores from the continental margin off Svalbard - cruise MSM57, supplement to: Riedel, Michael; Wallmann, Klaus; Berndt, Christian; Pape, Thomas; Freudenthal, Tim; Bergenthal, Markus; Bünz, S; Bohrmann, Gerhard (2018): In situ temperature measurements at the Svalbard continental margin: Implications for gas hydrate dynamics. Geochemistry, Geophysics, Geosystems, 19(4), 1165-1177 |
title_full_unstemmed |
Porosity of MeBo sediment cores from the continental margin off Svalbard - cruise MSM57, supplement to: Riedel, Michael; Wallmann, Klaus; Berndt, Christian; Pape, Thomas; Freudenthal, Tim; Bergenthal, Markus; Bünz, S; Bohrmann, Gerhard (2018): In situ temperature measurements at the Svalbard continental margin: Implications for gas hydrate dynamics. Geochemistry, Geophysics, Geosystems, 19(4), 1165-1177 |
title_sort |
porosity of mebo sediment cores from the continental margin off svalbard - cruise msm57, supplement to: riedel, michael; wallmann, klaus; berndt, christian; pape, thomas; freudenthal, tim; bergenthal, markus; bünz, s; bohrmann, gerhard (2018): in situ temperature measurements at the svalbard continental margin: implications for gas hydrate dynamics. geochemistry, geophysics, geosystems, 19(4), 1165-1177 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2018 |
url |
https://dx.doi.org/10.1594/pangaea.890370 https://doi.pangaea.de/10.1594/PANGAEA.890370 |
long_lat |
ENVELOPE(24.117,24.117,65.717,65.717) ENVELOPE(11.175,11.175,78.543,78.543) |
geographic |
Klaus Prins Karls Forland Svalbard |
geographic_facet |
Klaus Prins Karls Forland Svalbard |
genre |
Prins Karls Forland Svalbard Svalbard margin |
genre_facet |
Prins Karls Forland Svalbard Svalbard margin |
op_relation |
https://dx.doi.org/10.1002/2017gc007288 https://dx.doi.org/10.1038/s41467-017-02550-9 |
op_rights |
Creative Commons Attribution Non Commercial Share Alike 3.0 Unported https://creativecommons.org/licenses/by-nc-sa/3.0/legalcode cc-by-nc-sa-3.0 |
op_rightsnorm |
CC-BY-NC-SA |
op_doi |
https://doi.org/10.1594/pangaea.890370 https://doi.org/10.1002/2017gc007288 https://doi.org/10.1038/s41467-017-02550-9 |
_version_ |
1766174443428642816 |