Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions
This dataset contains all the necessary data for reproducing the results in the article. "Reduced methane seepage from Arctic sediments during cold bottom-water conditions" Abstract: Large amounts of methane are trapped within sub-seabed sediments in the Arctic ocean. Seasonal bottom water...
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ftdataverseno:doi:10.18710/EIFZ2J 2023-10-29T02:33:27+01:00 Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions Ferré, Bénédicte Jansson, Pär Moser, Manuel Serov, Pavel Portnov, Alexei Graves, Carolyn Panieri, Giuliana Gründger, Friederike Berndt, Christian Lehmann, Moritz F Niemann, Helge Jansson, Pär 2016-05-08 https://doi.org/10.18710/EIFZ2J English eng DataverseNO https://doi.org/10.18710/EIFZ2J Earth and Environmental Sciences Methane Cold seep Variability Arctic Microbial oxidation Flare Backscatter Ocean Seasonal Water temperature Salinity Pressure/ Depth Methane free gas flow rate Methane concentration Methane oxidation rates 2016 ftdataverseno https://doi.org/10.18710/EIFZ2J 2023-10-04T22:53:37Z This dataset contains all the necessary data for reproducing the results in the article. "Reduced methane seepage from Arctic sediments during cold bottom-water conditions" Abstract: Large amounts of methane are trapped within sub-seabed sediments in the Arctic ocean. Seasonal bottom water warming may induce the release of methane from the seafloor, yet methane seepage surveys mainly occur in summer. Here, we compare the seepage activity along the gas hydrate stability limit offshore Svalbard between cold and warm seasons. Hydro-acoustic surveys revealed decreased seepage activity during cold bottom water conditions, with 43 % fewer flares and methane release rates than under warmer conditions. For the first time, we demonstrate that cold seeps “hibernate” during cold seasons when more free methane gas becomes trapped in the sub-seabed sediments. Such a greenhouse gas capacitor increases the potential for methane release during summer months. Seasonal bottom water temperature variations are common in the Arctic continental shelves, and thus methane-seep hibernation is likely a widespread phenomenon underappreciated in previous global methane budgets. Other/Unknown Material Arctic Arctic Ocean Svalbard DataverseNO |
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ftdataverseno |
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English |
topic |
Earth and Environmental Sciences Methane Cold seep Variability Arctic Microbial oxidation Flare Backscatter Ocean Seasonal |
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Earth and Environmental Sciences Methane Cold seep Variability Arctic Microbial oxidation Flare Backscatter Ocean Seasonal Ferré, Bénédicte Jansson, Pär Moser, Manuel Serov, Pavel Portnov, Alexei Graves, Carolyn Panieri, Giuliana Gründger, Friederike Berndt, Christian Lehmann, Moritz F Niemann, Helge Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions |
topic_facet |
Earth and Environmental Sciences Methane Cold seep Variability Arctic Microbial oxidation Flare Backscatter Ocean Seasonal |
description |
This dataset contains all the necessary data for reproducing the results in the article. "Reduced methane seepage from Arctic sediments during cold bottom-water conditions" Abstract: Large amounts of methane are trapped within sub-seabed sediments in the Arctic ocean. Seasonal bottom water warming may induce the release of methane from the seafloor, yet methane seepage surveys mainly occur in summer. Here, we compare the seepage activity along the gas hydrate stability limit offshore Svalbard between cold and warm seasons. Hydro-acoustic surveys revealed decreased seepage activity during cold bottom water conditions, with 43 % fewer flares and methane release rates than under warmer conditions. For the first time, we demonstrate that cold seeps “hibernate” during cold seasons when more free methane gas becomes trapped in the sub-seabed sediments. Such a greenhouse gas capacitor increases the potential for methane release during summer months. Seasonal bottom water temperature variations are common in the Arctic continental shelves, and thus methane-seep hibernation is likely a widespread phenomenon underappreciated in previous global methane budgets. |
author2 |
Jansson, Pär |
format |
Other/Unknown Material |
author |
Ferré, Bénédicte Jansson, Pär Moser, Manuel Serov, Pavel Portnov, Alexei Graves, Carolyn Panieri, Giuliana Gründger, Friederike Berndt, Christian Lehmann, Moritz F Niemann, Helge |
author_facet |
Ferré, Bénédicte Jansson, Pär Moser, Manuel Serov, Pavel Portnov, Alexei Graves, Carolyn Panieri, Giuliana Gründger, Friederike Berndt, Christian Lehmann, Moritz F Niemann, Helge |
author_sort |
Ferré, Bénédicte |
title |
Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions |
title_short |
Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions |
title_full |
Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions |
title_fullStr |
Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions |
title_full_unstemmed |
Replication Data for: Reduced methane seepage from Arctic sediments during cold bottom-water conditions |
title_sort |
replication data for: reduced methane seepage from arctic sediments during cold bottom-water conditions |
publisher |
DataverseNO |
publishDate |
2016 |
url |
https://doi.org/10.18710/EIFZ2J |
genre |
Arctic Arctic Ocean Svalbard |
genre_facet |
Arctic Arctic Ocean Svalbard |
op_relation |
https://doi.org/10.18710/EIFZ2J |
op_doi |
https://doi.org/10.18710/EIFZ2J |
_version_ |
1781055505472421888 |