Multi-proxy approach to unravel methane emission history of an Arctic cold seep
Arctic Ocean sediments contain large amounts of methane in the form of free gas and gas hydrate. This highly dynamic methane reservoir is susceptible to be modified by bottom water warming. The warming may lead to gas hydrate destabilization releasing elevated methane fluxes to the seafloor and seaw...
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ftunivtroemsoe:oai:munin.uit.no:10037/18990 2023-05-15T14:24:45+02:00 Multi-proxy approach to unravel methane emission history of an Arctic cold seep Yao, Haoyi Niemann, Helge Panieri, Giuliana 2020-08-13 https://hdl.handle.net/10037/18990 https://doi.org/10.1016/j.quascirev.2020.106490 eng eng Elsevier Quaternary Science Reviews Norges forskningsråd: 255150 Norges forskningsråd: 223259 info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration/NORCRUST/ Yao H, Niemann H, Panieri G. Multi-proxy approach to unravel methane emission history of an Arctic cold seep. Quaternary Science Reviews. 2020;244:1-15 FRIDAID 1823276 https://doi.org/10.1016/j.quascirev.2020.106490 0277-3791 1873-457X https://hdl.handle.net/10037/18990 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.1016/j.quascirev.2020.106490 2021-06-25T17:57:36Z Arctic Ocean sediments contain large amounts of methane in the form of free gas and gas hydrate. This highly dynamic methane reservoir is susceptible to be modified by bottom water warming. The warming may lead to gas hydrate destabilization releasing elevated methane fluxes to the seafloor and seawater. Reconstructing past methane dynamics can be achieved by using specific proxies left in the geological record. In this study, we apply a multi-proxy approach for paleo seepage reconstruction from sediment records at gas hydrate mounds (GHMs) in Storfjordrenna (south of the Svalbard archipelago). These shallow water (∼380 m water depth) systems are potentially vulnerable to global warming related temperature changes. 14 C dating of foraminifera shells indicated an onset of deglaciation in the Storfjordrenna region at ∼20 kyr BP and allowed us to establish a stratigraphic context based on sediment Zr/Rb and Fe/Ca ratios. Several major (between 15 and 17 kyr BP) and minor methane venting phases were identified and interpreted to be related to gas hydrate instability triggered by isostatic adjustment right after the onset of the deglaciation. The detection of all major methane releases was only possible by combining data sets of stable carbon isotope compositions of foraminifera, mineralogy and δ 13 C values of authigenic carbonates, and abundance and stable carbon isotope signatures of lipid biomarkers. The most robust single proxy in this study was provided by the δ 13 C values of archaeal biomarkers. In contrast, the sediment Ba/Ti ratios recorded only the major events. Our results highlight the complexity and heterogeneity of methane dynamics in a small area of some hundred meters across. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Foraminifera* Global warming Storfjordrenna Svalbard University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Storfjordrenna ENVELOPE(17.000,17.000,76.000,76.000) Svalbard Svalbard Archipelago Quaternary Science Reviews 244 106490 |
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 Yao, Haoyi Niemann, Helge Panieri, Giuliana Multi-proxy approach to unravel methane emission history of an Arctic cold seep |
topic_facet |
VDP::Mathematics and natural science: 400 VDP::Matematikk og Naturvitenskap: 400 |
description |
Arctic Ocean sediments contain large amounts of methane in the form of free gas and gas hydrate. This highly dynamic methane reservoir is susceptible to be modified by bottom water warming. The warming may lead to gas hydrate destabilization releasing elevated methane fluxes to the seafloor and seawater. Reconstructing past methane dynamics can be achieved by using specific proxies left in the geological record. In this study, we apply a multi-proxy approach for paleo seepage reconstruction from sediment records at gas hydrate mounds (GHMs) in Storfjordrenna (south of the Svalbard archipelago). These shallow water (∼380 m water depth) systems are potentially vulnerable to global warming related temperature changes. 14 C dating of foraminifera shells indicated an onset of deglaciation in the Storfjordrenna region at ∼20 kyr BP and allowed us to establish a stratigraphic context based on sediment Zr/Rb and Fe/Ca ratios. Several major (between 15 and 17 kyr BP) and minor methane venting phases were identified and interpreted to be related to gas hydrate instability triggered by isostatic adjustment right after the onset of the deglaciation. The detection of all major methane releases was only possible by combining data sets of stable carbon isotope compositions of foraminifera, mineralogy and δ 13 C values of authigenic carbonates, and abundance and stable carbon isotope signatures of lipid biomarkers. The most robust single proxy in this study was provided by the δ 13 C values of archaeal biomarkers. In contrast, the sediment Ba/Ti ratios recorded only the major events. Our results highlight the complexity and heterogeneity of methane dynamics in a small area of some hundred meters across. |
format |
Article in Journal/Newspaper |
author |
Yao, Haoyi Niemann, Helge Panieri, Giuliana |
author_facet |
Yao, Haoyi Niemann, Helge Panieri, Giuliana |
author_sort |
Yao, Haoyi |
title |
Multi-proxy approach to unravel methane emission history of an Arctic cold seep |
title_short |
Multi-proxy approach to unravel methane emission history of an Arctic cold seep |
title_full |
Multi-proxy approach to unravel methane emission history of an Arctic cold seep |
title_fullStr |
Multi-proxy approach to unravel methane emission history of an Arctic cold seep |
title_full_unstemmed |
Multi-proxy approach to unravel methane emission history of an Arctic cold seep |
title_sort |
multi-proxy approach to unravel methane emission history of an arctic cold seep |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/18990 https://doi.org/10.1016/j.quascirev.2020.106490 |
long_lat |
ENVELOPE(17.000,17.000,76.000,76.000) |
geographic |
Arctic Arctic Ocean Storfjordrenna Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Arctic Ocean Storfjordrenna Svalbard Svalbard Archipelago |
genre |
Arctic Arctic Arctic Ocean Foraminifera* Global warming Storfjordrenna Svalbard |
genre_facet |
Arctic Arctic Arctic Ocean Foraminifera* Global warming Storfjordrenna Svalbard |
op_relation |
Quaternary Science Reviews Norges forskningsråd: 255150 Norges forskningsråd: 223259 info:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/ info:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration/NORCRUST/ Yao H, Niemann H, Panieri G. Multi-proxy approach to unravel methane emission history of an Arctic cold seep. Quaternary Science Reviews. 2020;244:1-15 FRIDAID 1823276 https://doi.org/10.1016/j.quascirev.2020.106490 0277-3791 1873-457X https://hdl.handle.net/10037/18990 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.1016/j.quascirev.2020.106490 |
container_title |
Quaternary Science Reviews |
container_volume |
244 |
container_start_page |
106490 |
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1766297214758420480 |