The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries
Methane is a potent greenhouse gas and large-scale rapid release of methane from hydrate may have contributed to past abrupt climate change inferred from the geological record. The discovery in 2008 of over 250 plumes of methane gas escaping from the seabed of the West Svalbard continental margin at...
Published in: | Geophysical Research Letters |
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2013
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ftsouthampton:oai:eprints.soton.ac.uk:360003 2023-07-30T04:01:20+02:00 The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries Marin-Moreno, Héctor Minshull, Timothy A. Westbrook, Graham K. Sinha, Bablu Sarkar, Sudipta 2013-10-16 text https://eprints.soton.ac.uk/360003/ https://eprints.soton.ac.uk/360003/1/20hydrate%2520beneath%2520the%2520seabed%2520offshore%2520Svalbard%2520to%2520ocean%2520warming%2520during%2520the%2520next%2520three%2520centuries%2520-%2520Mar%25C3%25ADn-Moreno%2520-%25202013%2520-%2520Geophysical%2520Research%2520Letters%2520-%2520Wiley%2520Online%2520Library.htm en English eng https://eprints.soton.ac.uk/360003/1/20hydrate%2520beneath%2520the%2520seabed%2520offshore%2520Svalbard%2520to%2520ocean%2520warming%2520during%2520the%2520next%2520three%2520centuries%2520-%2520Mar%25C3%25ADn-Moreno%2520-%25202013%2520-%2520Geophysical%2520Research%2520Letters%2520-%2520Wiley%2520Online%2520Library.htm Marin-Moreno, Héctor, Minshull, Timothy A., Westbrook, Graham K., Sinha, Bablu and Sarkar, Sudipta (2013) The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries. Geophysical Research Letters, 40 (19), 5159-5163. (doi:10.1002/grl.50985 <http://dx.doi.org/10.1002/grl.50985>). other Article PeerReviewed 2013 ftsouthampton https://doi.org/10.1002/grl.50985 2023-07-09T21:50:19Z Methane is a potent greenhouse gas and large-scale rapid release of methane from hydrate may have contributed to past abrupt climate change inferred from the geological record. The discovery in 2008 of over 250 plumes of methane gas escaping from the seabed of the West Svalbard continental margin at ~400 m water depth (mwd) suggests that hydrate is dissociating in the present-day Arctic. Here we model the dynamic response of hydrate-bearing sediments over a period of 2300 years and investigate ocean warming as a possible cause for present-day and likely future dissociation of hydrate, within 350–800 mwd, west of Svalbard. Future temperatures are given by two climate models, HadGEM2 and CCSM4, and scenarios, Representative Concentration Pathways (RCPs) 8.5 and 2.6. Our results suggest that over the next three centuries 5.3–29 Gg yr?1 of methane may be released to the Arctic Ocean on the West Svalbard margin. Article in Journal/Newspaper Arctic Arctic Ocean Climate change Methane hydrate Svalbard Svalbard margin University of Southampton: e-Prints Soton Arctic Arctic Ocean Svalbard Geophysical Research Letters 40 19 5159 5163 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Methane is a potent greenhouse gas and large-scale rapid release of methane from hydrate may have contributed to past abrupt climate change inferred from the geological record. The discovery in 2008 of over 250 plumes of methane gas escaping from the seabed of the West Svalbard continental margin at ~400 m water depth (mwd) suggests that hydrate is dissociating in the present-day Arctic. Here we model the dynamic response of hydrate-bearing sediments over a period of 2300 years and investigate ocean warming as a possible cause for present-day and likely future dissociation of hydrate, within 350–800 mwd, west of Svalbard. Future temperatures are given by two climate models, HadGEM2 and CCSM4, and scenarios, Representative Concentration Pathways (RCPs) 8.5 and 2.6. Our results suggest that over the next three centuries 5.3–29 Gg yr?1 of methane may be released to the Arctic Ocean on the West Svalbard margin. |
format |
Article in Journal/Newspaper |
author |
Marin-Moreno, Héctor Minshull, Timothy A. Westbrook, Graham K. Sinha, Bablu Sarkar, Sudipta |
spellingShingle |
Marin-Moreno, Héctor Minshull, Timothy A. Westbrook, Graham K. Sinha, Bablu Sarkar, Sudipta The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries |
author_facet |
Marin-Moreno, Héctor Minshull, Timothy A. Westbrook, Graham K. Sinha, Bablu Sarkar, Sudipta |
author_sort |
Marin-Moreno, Héctor |
title |
The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries |
title_short |
The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries |
title_full |
The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries |
title_fullStr |
The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries |
title_full_unstemmed |
The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries |
title_sort |
response of methane hydrate beneath the seabed offshore svalbard to ocean warming during the next three centuries |
publishDate |
2013 |
url |
https://eprints.soton.ac.uk/360003/ https://eprints.soton.ac.uk/360003/1/20hydrate%2520beneath%2520the%2520seabed%2520offshore%2520Svalbard%2520to%2520ocean%2520warming%2520during%2520the%2520next%2520three%2520centuries%2520-%2520Mar%25C3%25ADn-Moreno%2520-%25202013%2520-%2520Geophysical%2520Research%2520Letters%2520-%2520Wiley%2520Online%2520Library.htm |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Ocean Climate change Methane hydrate Svalbard Svalbard margin |
genre_facet |
Arctic Arctic Ocean Climate change Methane hydrate Svalbard Svalbard margin |
op_relation |
https://eprints.soton.ac.uk/360003/1/20hydrate%2520beneath%2520the%2520seabed%2520offshore%2520Svalbard%2520to%2520ocean%2520warming%2520during%2520the%2520next%2520three%2520centuries%2520-%2520Mar%25C3%25ADn-Moreno%2520-%25202013%2520-%2520Geophysical%2520Research%2520Letters%2520-%2520Wiley%2520Online%2520Library.htm Marin-Moreno, Héctor, Minshull, Timothy A., Westbrook, Graham K., Sinha, Bablu and Sarkar, Sudipta (2013) The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries. Geophysical Research Letters, 40 (19), 5159-5163. (doi:10.1002/grl.50985 <http://dx.doi.org/10.1002/grl.50985>). |
op_rights |
other |
op_doi |
https://doi.org/10.1002/grl.50985 |
container_title |
Geophysical Research Letters |
container_volume |
40 |
container_issue |
19 |
container_start_page |
5159 |
op_container_end_page |
5163 |
_version_ |
1772812073014657024 |