Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex
Methane emissions from Arctic continental margins are increasing due to the negative effect of global warming on ice sheet and permafrost stability, but dynamics and timescales of seafloor seepage still remain poorly constrained. Here, we examine sediment cores collected from an active seepage area...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Research
2021
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/21557 https://doi.org/10.1038/s41598-021-83542-0 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/21557 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/21557 2023-05-15T13:46:01+02:00 Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex Argentino, Claudio Waghorn, Kate Alyse Vadakkepuliyambatta, Sunil Polteau, Stephane Bünz, Stefan Panieri, Giuliana 2021-02-23 https://hdl.handle.net/10037/21557 https://doi.org/10.1038/s41598-021-83542-0 eng eng Nature Research Scientific Reports Norges forskningsråd: 223259 info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Argentino C, Waghorn KA, Vadakkepuliyambatta S, Polteau S, Bünz S, Panieri G. Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex. Scientific Reports. 2021;11 FRIDAID 1893040 doi:10.1038/s41598-021-83542-0 2045-2322 https://hdl.handle.net/10037/21557 openAccess Copyright 2021 The Author(s) VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1038/s41598-021-83542-0 2021-06-30T22:52:36Z Methane emissions from Arctic continental margins are increasing due to the negative effect of global warming on ice sheet and permafrost stability, but dynamics and timescales of seafloor seepage still remain poorly constrained. Here, we examine sediment cores collected from an active seepage area located between 295 and 353 m water depth in the SW Barents Sea, at Leirdjupet Fault Complex. The geochemical composition of hydrocarbon gas in the sediment indicates a mixture of microbial and thermogenic gas, the latter being sourced from underlying Mesozoic formations. Sediment and carbonate geochemistry reveal a long history of methane emissions that started during Late Weichselian deglaciation after 14.5 cal ka BP. Methane-derived authigenic carbonates precipitated due to local gas hydrate destabilization, in turn triggered by an increasing influx of warm Atlantic water and isostatic rebound linked to the retreat of the Barents Sea Ice Sheet. This study has implications for a better understanding of the dynamic and future evolution of methane seeps in modern analogue systems in Western Antarctica, where the retreat of marine-based ice sheet induced by global warming may cause the release of large amounts of methane from hydrocarbon reservoirs and gas hydrates. Article in Journal/Newspaper Antarc* Antarctica Arctic Arctic Barents Sea Global warming Ice Ice Sheet permafrost Sea ice University of Tromsø: Munin Open Research Archive Arctic Barents Sea Leirdjupet ENVELOPE(20.833,20.833,74.333,74.333) Scientific Reports 11 1 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
spellingShingle |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Argentino, Claudio Waghorn, Kate Alyse Vadakkepuliyambatta, Sunil Polteau, Stephane Bünz, Stefan Panieri, Giuliana Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex |
topic_facet |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
description |
Methane emissions from Arctic continental margins are increasing due to the negative effect of global warming on ice sheet and permafrost stability, but dynamics and timescales of seafloor seepage still remain poorly constrained. Here, we examine sediment cores collected from an active seepage area located between 295 and 353 m water depth in the SW Barents Sea, at Leirdjupet Fault Complex. The geochemical composition of hydrocarbon gas in the sediment indicates a mixture of microbial and thermogenic gas, the latter being sourced from underlying Mesozoic formations. Sediment and carbonate geochemistry reveal a long history of methane emissions that started during Late Weichselian deglaciation after 14.5 cal ka BP. Methane-derived authigenic carbonates precipitated due to local gas hydrate destabilization, in turn triggered by an increasing influx of warm Atlantic water and isostatic rebound linked to the retreat of the Barents Sea Ice Sheet. This study has implications for a better understanding of the dynamic and future evolution of methane seeps in modern analogue systems in Western Antarctica, where the retreat of marine-based ice sheet induced by global warming may cause the release of large amounts of methane from hydrocarbon reservoirs and gas hydrates. |
format |
Article in Journal/Newspaper |
author |
Argentino, Claudio Waghorn, Kate Alyse Vadakkepuliyambatta, Sunil Polteau, Stephane Bünz, Stefan Panieri, Giuliana |
author_facet |
Argentino, Claudio Waghorn, Kate Alyse Vadakkepuliyambatta, Sunil Polteau, Stephane Bünz, Stefan Panieri, Giuliana |
author_sort |
Argentino, Claudio |
title |
Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex |
title_short |
Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex |
title_full |
Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex |
title_fullStr |
Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex |
title_full_unstemmed |
Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex |
title_sort |
dynamic and history of methane seepage in the sw barents sea: new insights from leirdjupet fault complex |
publisher |
Nature Research |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/21557 https://doi.org/10.1038/s41598-021-83542-0 |
long_lat |
ENVELOPE(20.833,20.833,74.333,74.333) |
geographic |
Arctic Barents Sea Leirdjupet |
geographic_facet |
Arctic Barents Sea Leirdjupet |
genre |
Antarc* Antarctica Arctic Arctic Barents Sea Global warming Ice Ice Sheet permafrost Sea ice |
genre_facet |
Antarc* Antarctica Arctic Arctic Barents Sea Global warming Ice Ice Sheet permafrost Sea ice |
op_relation |
Scientific Reports Norges forskningsråd: 223259 info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ Argentino C, Waghorn KA, Vadakkepuliyambatta S, Polteau S, Bünz S, Panieri G. Dynamic and history of methane seepage in the SW Barents Sea: new insights from Leirdjupet Fault Complex. Scientific Reports. 2021;11 FRIDAID 1893040 doi:10.1038/s41598-021-83542-0 2045-2322 https://hdl.handle.net/10037/21557 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1038/s41598-021-83542-0 |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
_version_ |
1766235111593869312 |