Temporal constraints on hydrate-controlled methane seepage off Svalbard
Methane hydrate is an icelike substance that is stable at high pressure and low temperature in continental margin sediments. Since the discovery of a large number of gas flares at the landward termination of the gas hydrate stability zone off Svalbard, there has been concern that warming bottom wate...
Published in: | Science |
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American Association for the Advancement of Science
2014
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Online Access: | http://edoc.unibas.ch/dok/A6288869 https://edoc.unibas.ch/34142/ https://edoc.unibas.ch/34142/4/2014main.pdf https://edoc.unibas.ch/34142/5/20140716155408_53c6840065b4c.pdf https://doi.org/10.1126/science.1246298 |
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ftunivbasel:oai:edoc.unibas.ch:34142 2023-05-15T17:11:56+02:00 Temporal constraints on hydrate-controlled methane seepage off Svalbard C. Berndt, T. Feseker V. J. Bertics, I. Dumke K. Dünnbier, B. Ferré C. Graves, F. Gross K. Hissmann, V. Hühnerbach S. Krause, K. Lieser J. Schauer, L. Steinle 2014 application/pdf http://edoc.unibas.ch/dok/A6288869 https://edoc.unibas.ch/34142/ https://edoc.unibas.ch/34142/4/2014main.pdf https://edoc.unibas.ch/34142/5/20140716155408_53c6840065b4c.pdf https://doi.org/10.1126/science.1246298 eng eng American Association for the Advancement of Science https://edoc.unibas.ch/34142/4/2014main.pdf https://edoc.unibas.ch/34142/5/20140716155408_53c6840065b4c.pdf C. Berndt, T. Feseker and V. J. Bertics, I. Dumke and K. Dünnbier, B. Ferré and C. Graves, F. Gross and K. Hissmann, V. Hühnerbach and S. Krause, K. Lieser and J. Schauer, L. Steinle. (2014) Temporal constraints on hydrate-controlled methane seepage off Svalbard. Science, Vol. 343, H. 6168. pp. 284-287. doi:10.1126/science.1246298 urn:ISSN:0036-8075 info:eu-repo/semantics/closedAccess Article PeerReviewed 2014 ftunivbasel https://doi.org/10.1126/science.1246298 2023-03-05T07:04:43Z Methane hydrate is an icelike substance that is stable at high pressure and low temperature in continental margin sediments. Since the discovery of a large number of gas flares at the landward termination of the gas hydrate stability zone off Svalbard, there has been concern that warming bottom waters have started to dissociate large amounts of gas hydrate and that the resulting methane release may possibly accelerate global warming. Here, we corroborate that hydrates play a role in the observed seepage of gas, but we present evidence that seepage off Svalbard has been ongoing for at least 3000 years and that seasonal fluctuations of 1° to 2°C in the bottom-water temperature cause periodic gas hydrate formation and dissociation, which focus seepage at the observed sites. Article in Journal/Newspaper Methane hydrate Svalbard University of Basel: edoc Svalbard Science 343 6168 284 287 |
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University of Basel: edoc |
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ftunivbasel |
language |
English |
description |
Methane hydrate is an icelike substance that is stable at high pressure and low temperature in continental margin sediments. Since the discovery of a large number of gas flares at the landward termination of the gas hydrate stability zone off Svalbard, there has been concern that warming bottom waters have started to dissociate large amounts of gas hydrate and that the resulting methane release may possibly accelerate global warming. Here, we corroborate that hydrates play a role in the observed seepage of gas, but we present evidence that seepage off Svalbard has been ongoing for at least 3000 years and that seasonal fluctuations of 1° to 2°C in the bottom-water temperature cause periodic gas hydrate formation and dissociation, which focus seepage at the observed sites. |
format |
Article in Journal/Newspaper |
author |
C. Berndt, T. Feseker V. J. Bertics, I. Dumke K. Dünnbier, B. Ferré C. Graves, F. Gross K. Hissmann, V. Hühnerbach S. Krause, K. Lieser J. Schauer, L. Steinle |
spellingShingle |
C. Berndt, T. Feseker V. J. Bertics, I. Dumke K. Dünnbier, B. Ferré C. Graves, F. Gross K. Hissmann, V. Hühnerbach S. Krause, K. Lieser J. Schauer, L. Steinle Temporal constraints on hydrate-controlled methane seepage off Svalbard |
author_facet |
C. Berndt, T. Feseker V. J. Bertics, I. Dumke K. Dünnbier, B. Ferré C. Graves, F. Gross K. Hissmann, V. Hühnerbach S. Krause, K. Lieser J. Schauer, L. Steinle |
author_sort |
C. Berndt, T. Feseker |
title |
Temporal constraints on hydrate-controlled methane seepage off Svalbard |
title_short |
Temporal constraints on hydrate-controlled methane seepage off Svalbard |
title_full |
Temporal constraints on hydrate-controlled methane seepage off Svalbard |
title_fullStr |
Temporal constraints on hydrate-controlled methane seepage off Svalbard |
title_full_unstemmed |
Temporal constraints on hydrate-controlled methane seepage off Svalbard |
title_sort |
temporal constraints on hydrate-controlled methane seepage off svalbard |
publisher |
American Association for the Advancement of Science |
publishDate |
2014 |
url |
http://edoc.unibas.ch/dok/A6288869 https://edoc.unibas.ch/34142/ https://edoc.unibas.ch/34142/4/2014main.pdf https://edoc.unibas.ch/34142/5/20140716155408_53c6840065b4c.pdf https://doi.org/10.1126/science.1246298 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Methane hydrate Svalbard |
genre_facet |
Methane hydrate Svalbard |
op_relation |
https://edoc.unibas.ch/34142/4/2014main.pdf https://edoc.unibas.ch/34142/5/20140716155408_53c6840065b4c.pdf C. Berndt, T. Feseker and V. J. Bertics, I. Dumke and K. Dünnbier, B. Ferré and C. Graves, F. Gross and K. Hissmann, V. Hühnerbach and S. Krause, K. Lieser and J. Schauer, L. Steinle. (2014) Temporal constraints on hydrate-controlled methane seepage off Svalbard. Science, Vol. 343, H. 6168. pp. 284-287. doi:10.1126/science.1246298 urn:ISSN:0036-8075 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1126/science.1246298 |
container_title |
Science |
container_volume |
343 |
container_issue |
6168 |
container_start_page |
284 |
op_container_end_page |
287 |
_version_ |
1766068687656189952 |