Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea
Changes in the Arctic climate-ocean system can rapidly impact carbon cycling and cryosphere. Methane release from the seafloor has been widespread in the Barents Sea since the last deglaciation, being closely linked to changes in pressure and bottom water temperature. Here, we present a post-glacial...
Published in: | Communications Earth & Environment |
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ftunivtroemsoe:oai:munin.uit.no:10037/22536 2023-05-15T14:25:50+02:00 Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea El Bani Altuna, Naima Rasmussen, Tine Lander Ezat, Mohamed Vadakkepuliyambatta, Sunil Groeneveld, Jeroen Greaves, Mervyn 2021-09-09 https://hdl.handle.net/10037/22536 https://doi.org/10.1038/s43247-021-00264-x eng eng Springer Nature El bani Altuna, N., Rasmussen, T.L., Ezat, M.M., Vadakkepuliyambatta, S., Groeneveld, J. & Greaves, M. (2021). Benthic and planktic foraminiferal stable isotopes, benthic foraminiferal Mg/Ca data and reconstructed gas hydrate stability zone of core HH18-1059GC (Storfjordrenna, NW Barents Sea). DataverseNO, V1, https://doi.org/10.18710/XFYDFL . El Bani Altuna, N. (2021). Millennial-scale variability of Atlantic water inflow in the northern Nordic Seas and the northwestern Barents Sea - Relationship to abrupt climate oscillations, cryosphere and methane seepage from the seafloor. (Doctoral thesis). https://hdl.handle.net/10037/22253 . Communications Earth & Environment info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/FRINATEK/274429/Norway/Paleo-perspectives for the future circulation and carbon cycle dynamics in the Arctic Ocean// El Bani Altuna N, Rasmussen TLR, Ezat M, Vadakkepuliyambatta S, Groeneveld J, Greaves M. Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea. Communications Earth & Environment. 2021;2(188) FRIDAID 1933369 doi:10.1038/s43247-021-00264-x 2662-4435 https://hdl.handle.net/10037/22536 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1038/s43247-021-00264-x 2021-09-15T22:53:54Z Changes in the Arctic climate-ocean system can rapidly impact carbon cycling and cryosphere. Methane release from the seafloor has been widespread in the Barents Sea since the last deglaciation, being closely linked to changes in pressure and bottom water temperature. Here, we present a post-glacial bottom water temperature record (18,000–0 years before present) based on Mg/Ca in benthic foraminifera from an area where methane seepage occurs and proximal to a former Arctic ice-sheet grounding zone. Coupled ice sheet-hydrate stability modeling shows that phases of extreme bottom water temperature up to 6 °C and associated with inflow of Atlantic Water repeatedly destabilized subsurface hydrates facilitating the release of greenhouse gasses from the seabed. Furthermore, these warming events played an important role in triggering multiple collapses of the marine-based Svalbard Barents Sea Ice Sheet. Future warming of the Atlantic Water could lead to widespread disappearance of gas hydrates and melting of the remaining marine-terminating glaciers. Article in Journal/Newspaper Arctic arctic methane Arctic Barents Sea Foraminifera* Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet University of Tromsø: Munin Open Research Archive Arctic Barents Sea Svalbard Communications Earth & Environment 2 1 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 El Bani Altuna, Naima Rasmussen, Tine Lander Ezat, Mohamed Vadakkepuliyambatta, Sunil Groeneveld, Jeroen Greaves, Mervyn Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466 |
description |
Changes in the Arctic climate-ocean system can rapidly impact carbon cycling and cryosphere. Methane release from the seafloor has been widespread in the Barents Sea since the last deglaciation, being closely linked to changes in pressure and bottom water temperature. Here, we present a post-glacial bottom water temperature record (18,000–0 years before present) based on Mg/Ca in benthic foraminifera from an area where methane seepage occurs and proximal to a former Arctic ice-sheet grounding zone. Coupled ice sheet-hydrate stability modeling shows that phases of extreme bottom water temperature up to 6 °C and associated with inflow of Atlantic Water repeatedly destabilized subsurface hydrates facilitating the release of greenhouse gasses from the seabed. Furthermore, these warming events played an important role in triggering multiple collapses of the marine-based Svalbard Barents Sea Ice Sheet. Future warming of the Atlantic Water could lead to widespread disappearance of gas hydrates and melting of the remaining marine-terminating glaciers. |
format |
Article in Journal/Newspaper |
author |
El Bani Altuna, Naima Rasmussen, Tine Lander Ezat, Mohamed Vadakkepuliyambatta, Sunil Groeneveld, Jeroen Greaves, Mervyn |
author_facet |
El Bani Altuna, Naima Rasmussen, Tine Lander Ezat, Mohamed Vadakkepuliyambatta, Sunil Groeneveld, Jeroen Greaves, Mervyn |
author_sort |
El Bani Altuna, Naima |
title |
Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea |
title_short |
Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea |
title_full |
Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea |
title_fullStr |
Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea |
title_full_unstemmed |
Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea |
title_sort |
deglacial bottom water warming intensified arctic methane seepage in the nw barents sea |
publisher |
Springer Nature |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/22536 https://doi.org/10.1038/s43247-021-00264-x |
geographic |
Arctic Barents Sea Svalbard |
geographic_facet |
Arctic Barents Sea Svalbard |
genre |
Arctic arctic methane Arctic Barents Sea Foraminifera* Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet |
genre_facet |
Arctic arctic methane Arctic Barents Sea Foraminifera* Ice Sheet Sea ice Svalbard Svalbard-Barents Sea Ice sheet |
op_relation |
El bani Altuna, N., Rasmussen, T.L., Ezat, M.M., Vadakkepuliyambatta, S., Groeneveld, J. & Greaves, M. (2021). Benthic and planktic foraminiferal stable isotopes, benthic foraminiferal Mg/Ca data and reconstructed gas hydrate stability zone of core HH18-1059GC (Storfjordrenna, NW Barents Sea). DataverseNO, V1, https://doi.org/10.18710/XFYDFL . El Bani Altuna, N. (2021). Millennial-scale variability of Atlantic water inflow in the northern Nordic Seas and the northwestern Barents Sea - Relationship to abrupt climate oscillations, cryosphere and methane seepage from the seafloor. (Doctoral thesis). https://hdl.handle.net/10037/22253 . Communications Earth & Environment info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/FRINATEK/274429/Norway/Paleo-perspectives for the future circulation and carbon cycle dynamics in the Arctic Ocean// El Bani Altuna N, Rasmussen TLR, Ezat M, Vadakkepuliyambatta S, Groeneveld J, Greaves M. Deglacial bottom water warming intensified Arctic methane seepage in the NW Barents Sea. Communications Earth & Environment. 2021;2(188) FRIDAID 1933369 doi:10.1038/s43247-021-00264-x 2662-4435 https://hdl.handle.net/10037/22536 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1038/s43247-021-00264-x |
container_title |
Communications Earth & Environment |
container_volume |
2 |
container_issue |
1 |
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1766298299713716224 |