Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet
Source: doi:10.1038/ncomms11509 Gas hydrates stored on continental shelves are susceptible to dissociation triggered by environmental changes. Knowledge of the timescales of gas hydrate dissociation and subsequent methane release are critical in understanding the impact of marine gas hydrates on the...
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Online Access: | https://hdl.handle.net/10037/10699 https://doi.org/10.1038/ncomms11509 |
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ftunivtroemsoe:oai:munin.uit.no:10037/10699 2023-05-15T14:26:25+02:00 Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet Cremiere, Antoine Lepland, Aivo Chand, Shyam Sahy, Diana Condon, Daniel J. Noble, Stephen R. Martma, Tõnu Thorsnes, Terje Sauer, Simone Brunstad, Harald 2016-05-11 https://hdl.handle.net/10037/10699 https://doi.org/10.1038/ncomms11509 eng eng Nature Publishing Group Nature Communications info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE Crémière, A. et al. Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet. Nat. Commun. 7:11509 doi:10.1038/ncomms11509 (2016) FRIDAID 1356215 doi:10.1038/ncomms11509 2041-1723 https://hdl.handle.net/10037/10699 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Journal article Tidsskriftartikkel Peer reviewed 2016 ftunivtroemsoe https://doi.org/10.1038/ncomms11509 2021-06-25T17:55:05Z Source: doi:10.1038/ncomms11509 Gas hydrates stored on continental shelves are susceptible to dissociation triggered by environmental changes. Knowledge of the timescales of gas hydrate dissociation and subsequent methane release are critical in understanding the impact of marine gas hydrates on the ocean–atmosphere system. Here we report a methane efflux chronology from five sites, at depths of 220–400 m, in the southwest Barents and Norwegian seas where grounded ice sheets led to thickening of the gas hydrate stability zone during the last glaciation. The onset of methane release was coincident with deglaciation-induced pressure release and thinning of the hydrate stability zone. Methane efflux continued for 7–10 kyr, tracking hydrate stability changes controlled by relative sea-level rise, bottom water warming and fluid pathway evolution in response to changing stress fields. The protracted nature of seafloor methane emissions probably attenuated the impact of hydrate dissociation on the climate system. Article in Journal/Newspaper Arctic Ice Sheet University of Tromsø: Munin Open Research Archive Nature Communications 7 1 |
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University of Tromsø: Munin Open Research Archive |
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English |
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VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 |
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VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Cremiere, Antoine Lepland, Aivo Chand, Shyam Sahy, Diana Condon, Daniel J. Noble, Stephen R. Martma, Tõnu Thorsnes, Terje Sauer, Simone Brunstad, Harald Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 |
description |
Source: doi:10.1038/ncomms11509 Gas hydrates stored on continental shelves are susceptible to dissociation triggered by environmental changes. Knowledge of the timescales of gas hydrate dissociation and subsequent methane release are critical in understanding the impact of marine gas hydrates on the ocean–atmosphere system. Here we report a methane efflux chronology from five sites, at depths of 220–400 m, in the southwest Barents and Norwegian seas where grounded ice sheets led to thickening of the gas hydrate stability zone during the last glaciation. The onset of methane release was coincident with deglaciation-induced pressure release and thinning of the hydrate stability zone. Methane efflux continued for 7–10 kyr, tracking hydrate stability changes controlled by relative sea-level rise, bottom water warming and fluid pathway evolution in response to changing stress fields. The protracted nature of seafloor methane emissions probably attenuated the impact of hydrate dissociation on the climate system. |
format |
Article in Journal/Newspaper |
author |
Cremiere, Antoine Lepland, Aivo Chand, Shyam Sahy, Diana Condon, Daniel J. Noble, Stephen R. Martma, Tõnu Thorsnes, Terje Sauer, Simone Brunstad, Harald |
author_facet |
Cremiere, Antoine Lepland, Aivo Chand, Shyam Sahy, Diana Condon, Daniel J. Noble, Stephen R. Martma, Tõnu Thorsnes, Terje Sauer, Simone Brunstad, Harald |
author_sort |
Cremiere, Antoine |
title |
Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet |
title_short |
Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet |
title_full |
Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet |
title_fullStr |
Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet |
title_full_unstemmed |
Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet |
title_sort |
timescales of methane seepage on the norwegian margin following collapse of the scandinavian ice sheet |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
https://hdl.handle.net/10037/10699 https://doi.org/10.1038/ncomms11509 |
genre |
Arctic Ice Sheet |
genre_facet |
Arctic Ice Sheet |
op_relation |
Nature Communications info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE Crémière, A. et al. Timescales of methane seepage on the Norwegian margin following collapse of the Scandinavian Ice Sheet. Nat. Commun. 7:11509 doi:10.1038/ncomms11509 (2016) FRIDAID 1356215 doi:10.1038/ncomms11509 2041-1723 https://hdl.handle.net/10037/10699 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1038/ncomms11509 |
container_title |
Nature Communications |
container_volume |
7 |
container_issue |
1 |
_version_ |
1766298986795237376 |