Impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in West Antarctic: a case study in the Amundsen Sea
This research delves into the interaction between carbon isotopes, ice-rafted debris (IRD), and Circumpolar Deep Water (CDW) in the Amundsen Sea, West Antarctic. Utilizing sediment core ANT36-A11-04, we traced the source of the organic matter though an analysis of the total organic carbon (TOC), sta...
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Online Access: | https://doi.org/10.3389/fmars.2023.1284750 https://doaj.org/article/4894c4e2ff3645cfae65eed2ac1f39b5 |
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ftdoajarticles:oai:doaj.org/article:4894c4e2ff3645cfae65eed2ac1f39b5 2024-02-11T09:55:17+01:00 Impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in West Antarctic: a case study in the Amundsen Sea Ziyan Lei Qian Ge Dong Chen Yongcong Zhang Xibin Han 2024-01-01T00:00:00Z https://doi.org/10.3389/fmars.2023.1284750 https://doaj.org/article/4894c4e2ff3645cfae65eed2ac1f39b5 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2023.1284750/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2023.1284750 https://doaj.org/article/4894c4e2ff3645cfae65eed2ac1f39b5 Frontiers in Marine Science, Vol 10 (2024) paleoenvironment evolution pattern organic matter geochemistry sediment Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2024 ftdoajarticles https://doi.org/10.3389/fmars.2023.1284750 2024-01-14T01:51:33Z This research delves into the interaction between carbon isotopes, ice-rafted debris (IRD), and Circumpolar Deep Water (CDW) in the Amundsen Sea, West Antarctic. Utilizing sediment core ANT36-A11-04, we traced the source of the organic matter though an analysis of the total organic carbon (TOC), stable carbon isotopes (δ13Corg), and nitrogen content. We identified six environmental events in this region since the Mid-Holocene, which were discerned through a comparative analysis of the δ13Corg, TOC, and IRD content. These events were closely linked to variations in the intensity of the CDW. Notably, the synchronous occurrence of a negative shift in the δ13Corg value and increases in TOC and IRD highlight the significant impact of CDW intrusion, underlining the pivotal role of the CDW in the regional environmental evolution. Specifically, intensified upwelling of the CDW was correlated with increased heat and nutrients, enhanced glacier melting, phytoplankton blooms, higher TOC content, augmented deposition of IRD, and finally resulted in a negative shift in the δ13Corg value. We present a comprehensive picture of the local environmental evolution in the Amundsen Sea, characterized as a marine-glacial-biological coupling model, thereby contributing to a broader understanding of Antarctic environmental dynamics. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Amundsen Sea Antarctic Frontiers in Marine Science 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
paleoenvironment evolution pattern organic matter geochemistry sediment Science Q General. Including nature conservation geographical distribution QH1-199.5 |
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paleoenvironment evolution pattern organic matter geochemistry sediment Science Q General. Including nature conservation geographical distribution QH1-199.5 Ziyan Lei Qian Ge Dong Chen Yongcong Zhang Xibin Han Impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in West Antarctic: a case study in the Amundsen Sea |
topic_facet |
paleoenvironment evolution pattern organic matter geochemistry sediment Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
This research delves into the interaction between carbon isotopes, ice-rafted debris (IRD), and Circumpolar Deep Water (CDW) in the Amundsen Sea, West Antarctic. Utilizing sediment core ANT36-A11-04, we traced the source of the organic matter though an analysis of the total organic carbon (TOC), stable carbon isotopes (δ13Corg), and nitrogen content. We identified six environmental events in this region since the Mid-Holocene, which were discerned through a comparative analysis of the δ13Corg, TOC, and IRD content. These events were closely linked to variations in the intensity of the CDW. Notably, the synchronous occurrence of a negative shift in the δ13Corg value and increases in TOC and IRD highlight the significant impact of CDW intrusion, underlining the pivotal role of the CDW in the regional environmental evolution. Specifically, intensified upwelling of the CDW was correlated with increased heat and nutrients, enhanced glacier melting, phytoplankton blooms, higher TOC content, augmented deposition of IRD, and finally resulted in a negative shift in the δ13Corg value. We present a comprehensive picture of the local environmental evolution in the Amundsen Sea, characterized as a marine-glacial-biological coupling model, thereby contributing to a broader understanding of Antarctic environmental dynamics. |
format |
Article in Journal/Newspaper |
author |
Ziyan Lei Qian Ge Dong Chen Yongcong Zhang Xibin Han |
author_facet |
Ziyan Lei Qian Ge Dong Chen Yongcong Zhang Xibin Han |
author_sort |
Ziyan Lei |
title |
Impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in West Antarctic: a case study in the Amundsen Sea |
title_short |
Impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in West Antarctic: a case study in the Amundsen Sea |
title_full |
Impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in West Antarctic: a case study in the Amundsen Sea |
title_fullStr |
Impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in West Antarctic: a case study in the Amundsen Sea |
title_full_unstemmed |
Impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in West Antarctic: a case study in the Amundsen Sea |
title_sort |
impact of circumpolar deep water on organic carbon isotopes and ice-rafted debris in west antarctic: a case study in the amundsen sea |
publisher |
Frontiers Media S.A. |
publishDate |
2024 |
url |
https://doi.org/10.3389/fmars.2023.1284750 https://doaj.org/article/4894c4e2ff3645cfae65eed2ac1f39b5 |
geographic |
Amundsen Sea Antarctic |
geographic_facet |
Amundsen Sea Antarctic |
genre |
Amundsen Sea Antarc* Antarctic |
genre_facet |
Amundsen Sea Antarc* Antarctic |
op_source |
Frontiers in Marine Science, Vol 10 (2024) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2023.1284750/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2023.1284750 https://doaj.org/article/4894c4e2ff3645cfae65eed2ac1f39b5 |
op_doi |
https://doi.org/10.3389/fmars.2023.1284750 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
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1790594863691988992 |