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 exp...
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Copernicus Publications
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00071057 2024-02-11T10:07:51+01:00 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 electronic https://doi.org/10.5194/cp-20-121-2024 https://noa.gwlb.de/receive/cop_mods_00071057 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069369/cp-20-121-2024.pdf https://cp.copernicus.org/articles/20/121/2024/cp-20-121-2024.pdf eng eng Copernicus Publications Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-20-121-2024 https://noa.gwlb.de/receive/cop_mods_00071057 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069369/cp-20-121-2024.pdf https://cp.copernicus.org/articles/20/121/2024/cp-20-121-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/cp-20-121-2024 2024-01-22T00:22:46Z 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, located in the north-eastern Atlantic Ocean off the coasts of France and Spain. Specifically, we focus on the area that was the mouth of the Channel River during the last deglaciation, where an enhanced terrigenous input has been reported for the last glacial–interglacial transition. We conducted a comprehensive suite of biomarker analyses (e.g. n-alkanes, hopanes and n-alkanoic acids) and isotopic investigations (radiocarbon dating and δ13C measurements) on a high-resolution sedimentary archive. The present study provides the first direct evidence for the fluvial supply of immature and ancient terrestrial organic matter to the core location. Moreover, our results reveal the possibility of permafrost carbon export to the ocean, driven by processes such as deglacial warming and glacial erosion. These findings are consistent with observations from other regions characterized by present or past permafrost conditions on land, which have shown that permafrost thaw and glacial erosion can lead to carbon remobilization, potentially influencing atmospheric carbon dioxide levels. Article in Journal/Newspaper permafrost Niedersächsisches Online-Archiv NOA Climate of the Past 20 1 121 136 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung 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 |
topic_facet |
article Verlagsveröffentlichung |
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, located in the north-eastern Atlantic Ocean off the coasts of France and Spain. Specifically, we focus on the area that was the mouth of the Channel River during the last deglaciation, where an enhanced terrigenous input has been reported for the last glacial–interglacial transition. We conducted a comprehensive suite of biomarker analyses (e.g. n-alkanes, hopanes and n-alkanoic acids) and isotopic investigations (radiocarbon dating and δ13C measurements) on a high-resolution sedimentary archive. The present study provides the first direct evidence for the fluvial supply of immature and ancient terrestrial organic matter to the core location. Moreover, our results reveal the possibility of permafrost carbon export to the ocean, driven by processes such as deglacial warming and glacial erosion. These findings are consistent with observations from other regions characterized by present or past permafrost conditions on land, which have shown that permafrost thaw and glacial erosion can lead to carbon remobilization, potentially influencing atmospheric carbon dioxide levels. |
format |
Article in Journal/Newspaper |
author |
Queiroz Alves, Eduardo Wong, Wanyee Hefter, Jens Grotheer, Hendrik Tesi, Tommaso Gentz, Torben Zonneveld, Karin Mollenhauer, Gesine |
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 Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/cp-20-121-2024 https://noa.gwlb.de/receive/cop_mods_00071057 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069369/cp-20-121-2024.pdf https://cp.copernicus.org/articles/20/121/2024/cp-20-121-2024.pdf |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Climate of the Past -- http://www.copernicus.org/EGU/cp/cp/published_papers.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2217985 -- 1814-9332 https://doi.org/10.5194/cp-20-121-2024 https://noa.gwlb.de/receive/cop_mods_00071057 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00069369/cp-20-121-2024.pdf https://cp.copernicus.org/articles/20/121/2024/cp-20-121-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
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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1790606665598369792 |