Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait:Ostracode species as a potential indicator of cold seep activity
Past intensity of methane release from deep-ocean methane hydrates continues to be challenging to reconstruct reliably. Here, we used fossil ostracode fauna paired with foraminiferal δ13C values in a marine sediment core from Vestnesa Ridge, western Svalbard margin, to reconstruct methane seepage ac...
Published in: | Geology |
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2023
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Online Access: | https://curis.ku.dk/portal/da/publications/late-quaternary-paleoceanography-of-vestnesa-ridge-fram-strait(93c411d7-f218-45b5-9c05-606c3c79e4bd).html https://doi.org/10.1130/G51237.1 https://curis.ku.dk/ws/files/362060956/573317597.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/93c411d7-f218-45b5-9c05-606c3c79e4bd 2024-06-09T07:49:52+00:00 Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait:Ostracode species as a potential indicator of cold seep activity Chu, Rachel Wai Ching Yasuhara, Moriaki Riise, Karoline Myrvang Asahi, Hirofumi Huang, Huai-hsuan May Cotton, Laura J. Hong, Yuanyuan Rasmussen, Tine L. 2023-08-01 application/pdf https://curis.ku.dk/portal/da/publications/late-quaternary-paleoceanography-of-vestnesa-ridge-fram-strait(93c411d7-f218-45b5-9c05-606c3c79e4bd).html https://doi.org/10.1130/G51237.1 https://curis.ku.dk/ws/files/362060956/573317597.pdf eng eng info:eu-repo/semantics/openAccess Chu , R W C , Yasuhara , M , Riise , K M , Asahi , H , Huang , H M , Cotton , L J , Hong , Y & Rasmussen , T L 2023 , ' Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait : Ostracode species as a potential indicator of cold seep activity ' , Geology , vol. 51 , no. 8 , pp. 758-762 . https://doi.org/10.1130/G51237.1 article 2023 ftcopenhagenunip https://doi.org/10.1130/G51237.1 2024-05-16T11:29:30Z Past intensity of methane release from deep-ocean methane hydrates continues to be challenging to reconstruct reliably. Here, we used fossil ostracode fauna paired with foraminiferal δ13C values in a marine sediment core from Vestnesa Ridge, western Svalbard margin, to reconstruct methane seepage activity during the late Quaternary and to examine faunal response to deglacial climatic changes. Benthic foraminiferal δ13C values indicate methane seepage activity was relatively strong during marine isotope stage 2, corresponding to a high percentage of the ostracode Rosaliella svalbardensis in the assemblage. In contrast, this species was absent under conditions of no or very strong seepage of methane. Faunal changes in other taxa were more related to global climate changes regardless of the seepage activity. This result indicates that Rosaliella svalbardensis is a potential new useful proxy for past methane release. Article in Journal/Newspaper Svalbard Svalbard margin University of Copenhagen: Research Svalbard Geology 51 8 758 762 |
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Open Polar |
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University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Past intensity of methane release from deep-ocean methane hydrates continues to be challenging to reconstruct reliably. Here, we used fossil ostracode fauna paired with foraminiferal δ13C values in a marine sediment core from Vestnesa Ridge, western Svalbard margin, to reconstruct methane seepage activity during the late Quaternary and to examine faunal response to deglacial climatic changes. Benthic foraminiferal δ13C values indicate methane seepage activity was relatively strong during marine isotope stage 2, corresponding to a high percentage of the ostracode Rosaliella svalbardensis in the assemblage. In contrast, this species was absent under conditions of no or very strong seepage of methane. Faunal changes in other taxa were more related to global climate changes regardless of the seepage activity. This result indicates that Rosaliella svalbardensis is a potential new useful proxy for past methane release. |
format |
Article in Journal/Newspaper |
author |
Chu, Rachel Wai Ching Yasuhara, Moriaki Riise, Karoline Myrvang Asahi, Hirofumi Huang, Huai-hsuan May Cotton, Laura J. Hong, Yuanyuan Rasmussen, Tine L. |
spellingShingle |
Chu, Rachel Wai Ching Yasuhara, Moriaki Riise, Karoline Myrvang Asahi, Hirofumi Huang, Huai-hsuan May Cotton, Laura J. Hong, Yuanyuan Rasmussen, Tine L. Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait:Ostracode species as a potential indicator of cold seep activity |
author_facet |
Chu, Rachel Wai Ching Yasuhara, Moriaki Riise, Karoline Myrvang Asahi, Hirofumi Huang, Huai-hsuan May Cotton, Laura J. Hong, Yuanyuan Rasmussen, Tine L. |
author_sort |
Chu, Rachel Wai Ching |
title |
Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait:Ostracode species as a potential indicator of cold seep activity |
title_short |
Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait:Ostracode species as a potential indicator of cold seep activity |
title_full |
Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait:Ostracode species as a potential indicator of cold seep activity |
title_fullStr |
Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait:Ostracode species as a potential indicator of cold seep activity |
title_full_unstemmed |
Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait:Ostracode species as a potential indicator of cold seep activity |
title_sort |
late quaternary paleoceanography of vestnesa ridge, fram strait:ostracode species as a potential indicator of cold seep activity |
publishDate |
2023 |
url |
https://curis.ku.dk/portal/da/publications/late-quaternary-paleoceanography-of-vestnesa-ridge-fram-strait(93c411d7-f218-45b5-9c05-606c3c79e4bd).html https://doi.org/10.1130/G51237.1 https://curis.ku.dk/ws/files/362060956/573317597.pdf |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Svalbard Svalbard margin |
genre_facet |
Svalbard Svalbard margin |
op_source |
Chu , R W C , Yasuhara , M , Riise , K M , Asahi , H , Huang , H M , Cotton , L J , Hong , Y & Rasmussen , T L 2023 , ' Late Quaternary paleoceanography of Vestnesa Ridge, Fram Strait : Ostracode species as a potential indicator of cold seep activity ' , Geology , vol. 51 , no. 8 , pp. 758-762 . https://doi.org/10.1130/G51237.1 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1130/G51237.1 |
container_title |
Geology |
container_volume |
51 |
container_issue |
8 |
container_start_page |
758 |
op_container_end_page |
762 |
_version_ |
1801382755469099008 |