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dc.contributor.authorEl Bani Altuna, Naima
dc.contributor.authorRasmussen, Tine Lander
dc.contributor.authorEzat, Mohamed
dc.contributor.authorVadakkepuliyambatta, Sunil
dc.contributor.authorGroeneveld, Jeroen
dc.contributor.authorGreaves, Mervyn
dc.date.accessioned2021-09-15T10:50:36Z
dc.date.available2021-09-15T10:50:36Z
dc.date.issued2021-09-09
dc.description.abstractChanges 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.en_US
dc.identifier.citationEl 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)en_US
dc.identifier.cristinIDFRIDAID 1933369
dc.identifier.doi10.1038/s43247-021-00264-x
dc.identifier.issn2662-4435
dc.identifier.urihttps://hdl.handle.net/10037/22536
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.relation.isbasedonEl 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, <a href=https://doi.org/10.18710/XFYDFL>https://doi.org/10.18710/XFYDFL</a>.
dc.relation.ispartofEl 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). <a href=https://hdl.handle.net/10037/22253>https://hdl.handle.net/10037/22253</a>.
dc.relation.journalCommunications Earth & Environment
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/FRINATEK/274429/Norway/Paleo-perspectives for the future circulation and carbon cycle dynamics in the Arctic Ocean//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466en_US
dc.titleDeglacial bottom water warming intensified Arctic methane seepage in the NW Barents Seaen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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