Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay
The last deglaciation is the most recent relatively well-documented period of pronounced and fast climate warming and, as such, it holds important information for our understanding of the climate system. Notably, while research into terrestrial organic carbon reservoirs has been instrumental in expl...
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Copernicus GmbH
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ftarchimer:oai:archimer.ifremer.fr:93684 2024-04-21T08:10:15+00:00 Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay Queiroz Alves, Eduardo Wong, Wanyee Hefter, Jens Grotheer, Hendrik Tesi, Tommaso Gentz, Torben Zonneveld, Karin Mollenhauer, Gesine 2024-01 application/pdf https://archimer.ifremer.fr/doc/00825/93684/100478.pdf https://archimer.ifremer.fr/doc/00825/93684/107879.pdf https://archimer.ifremer.fr/doc/00825/93684/107880.pdf https://archimer.ifremer.fr/doc/00825/93684/107881.pdf https://doi.org/10.5194/cp-20-121-2024 https://archimer.ifremer.fr/doc/00825/93684/ eng eng Copernicus GmbH https://archimer.ifremer.fr/doc/00825/93684/100478.pdf https://archimer.ifremer.fr/doc/00825/93684/107879.pdf https://archimer.ifremer.fr/doc/00825/93684/107880.pdf https://archimer.ifremer.fr/doc/00825/93684/107881.pdf doi:10.5194/cp-20-121-2024 https://archimer.ifremer.fr/doc/00825/93684/ info:eu-repo/semantics/openAccess restricted use Climate Of The Past (1814-9324) (Copernicus GmbH), 2024-01 , Vol. 20 , N. 1 , P. 121-136 text Article info:eu-repo/semantics/article 2024 ftarchimer https://doi.org/10.5194/cp-20-121-2024 2024-03-27T15:28:15Z The last deglaciation is the most recent relatively well-documented period of pronounced and fast climate warming and, as such, it holds important information for our understanding of the climate system. Notably, while research into terrestrial organic carbon reservoirs has been instrumental in exploring the possible sources of atmospheric carbon dioxide during periods of rapid change, the underlying mechanisms are not fully understood. Here we investigate the mobilization of organic matter to the Bay of Biscay at the mouth of the Channel River, where an enhanced terrigenous input has been reported for the last glacial-interglacial transition. A suite of biomarker and isotopic analyses on a high-resolution sedimentary archive provided the first direct evidence for the fluvial supply of immature and ancient terrestrial organic matter to the core location. In the light of what has been reported for other regions with present or past permafrost conditions on land, this result points to the possibility of permafrost carbon export to the ocean, caused by processes that likely furthered the observed changes in atmospheric carbon dioxide. Article in Journal/Newspaper permafrost Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Climate of the Past 20 1 121 136 |
institution |
Open Polar |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
The last deglaciation is the most recent relatively well-documented period of pronounced and fast climate warming and, as such, it holds important information for our understanding of the climate system. Notably, while research into terrestrial organic carbon reservoirs has been instrumental in exploring the possible sources of atmospheric carbon dioxide during periods of rapid change, the underlying mechanisms are not fully understood. Here we investigate the mobilization of organic matter to the Bay of Biscay at the mouth of the Channel River, where an enhanced terrigenous input has been reported for the last glacial-interglacial transition. A suite of biomarker and isotopic analyses on a high-resolution sedimentary archive provided the first direct evidence for the fluvial supply of immature and ancient terrestrial organic matter to the core location. In the light of what has been reported for other regions with present or past permafrost conditions on land, this result points to the possibility of permafrost carbon export to the ocean, caused by processes that likely furthered the observed changes in atmospheric carbon dioxide. |
format |
Article in Journal/Newspaper |
author |
Queiroz Alves, Eduardo Wong, Wanyee Hefter, Jens Grotheer, Hendrik Tesi, Tommaso Gentz, Torben Zonneveld, Karin Mollenhauer, Gesine |
spellingShingle |
Queiroz Alves, Eduardo Wong, Wanyee Hefter, Jens Grotheer, Hendrik Tesi, Tommaso Gentz, Torben Zonneveld, Karin Mollenhauer, Gesine Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay |
author_facet |
Queiroz Alves, Eduardo Wong, Wanyee Hefter, Jens Grotheer, Hendrik Tesi, Tommaso Gentz, Torben Zonneveld, Karin Mollenhauer, Gesine |
author_sort |
Queiroz Alves, Eduardo |
title |
Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay |
title_short |
Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay |
title_full |
Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay |
title_fullStr |
Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay |
title_full_unstemmed |
Deglacial export of pre-aged terrigenous carbon to the Bay of Biscay |
title_sort |
deglacial export of pre-aged terrigenous carbon to the bay of biscay |
publisher |
Copernicus GmbH |
publishDate |
2024 |
url |
https://archimer.ifremer.fr/doc/00825/93684/100478.pdf https://archimer.ifremer.fr/doc/00825/93684/107879.pdf https://archimer.ifremer.fr/doc/00825/93684/107880.pdf https://archimer.ifremer.fr/doc/00825/93684/107881.pdf https://doi.org/10.5194/cp-20-121-2024 https://archimer.ifremer.fr/doc/00825/93684/ |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Climate Of The Past (1814-9324) (Copernicus GmbH), 2024-01 , Vol. 20 , N. 1 , P. 121-136 |
op_relation |
https://archimer.ifremer.fr/doc/00825/93684/100478.pdf https://archimer.ifremer.fr/doc/00825/93684/107879.pdf https://archimer.ifremer.fr/doc/00825/93684/107880.pdf https://archimer.ifremer.fr/doc/00825/93684/107881.pdf doi:10.5194/cp-20-121-2024 https://archimer.ifremer.fr/doc/00825/93684/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.5194/cp-20-121-2024 |
container_title |
Climate of the Past |
container_volume |
20 |
container_issue |
1 |
container_start_page |
121 |
op_container_end_page |
136 |
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1796951642407436288 |