Chronology and Sedimentary Processes in the Western Ross Sea, Antarctica since the Last Glacial Period
The stability of contemporary ice shelves is under threat due to global warming, and the geological records in the Ross Sea offer such an opportunity to test the linkage between them. However, the absence of calcareous microfossils in the sediments of the Ross Sea results in uncertainties in establi...
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ftdoajarticles:oai:doaj.org/article:65ad6f216a994a8fab369ce1baf3bc1c 2024-09-15T17:47:44+00:00 Chronology and Sedimentary Processes in the Western Ross Sea, Antarctica since the Last Glacial Period Geng Liu Zhongshan Shen Xibin Han Haifeng Wang Weiwei Chen Yi Zhang Pengyun Ma Yibing Li Yun Cai Pengfei Xue Huafeng Qin Chunxia Zhang 2024-01-01T00:00:00Z https://doi.org/10.3390/jmse12020254 https://doaj.org/article/65ad6f216a994a8fab369ce1baf3bc1c EN eng MDPI AG https://www.mdpi.com/2077-1312/12/2/254 https://doaj.org/toc/2077-1312 doi:10.3390/jmse12020254 2077-1312 https://doaj.org/article/65ad6f216a994a8fab369ce1baf3bc1c Journal of Marine Science and Engineering, Vol 12, Iss 2, p 254 (2024) magnetic susceptibility AMS 14 C sediment grain size ice-shelf processes paleoenvironmental evolution Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2024 ftdoajarticles https://doi.org/10.3390/jmse12020254 2024-08-05T17:49:58Z The stability of contemporary ice shelves is under threat due to global warming, and the geological records in the Ross Sea offer such an opportunity to test the linkage between them. However, the absence of calcareous microfossils in the sediments of the Ross Sea results in uncertainties in establishing a precise chronology for studies. Hence, three sediment cores were collected and studied in terms of radiocarbon dating, magnetic susceptibility, and sediment grain size to reconstruct the environmental processes in the Ross Sea since the last glacial period. The main results are as follows: (1) two grain-size components were identified for the studied cores, which can be correlated to ice-shelf and sea-ice transport, respectively; (2) due to old-carbon contamination and an inconsistent carbon reservoir, the radiocarbon dates were generally underestimated, and as an alternative, changes in magnetic susceptibility of the studied cores can be tuned to the ice-core records to establish a reliable age–depth model and; (3) integrating sediment grain-size changes and comparisons with other paleoenvironmental proxies in the Antarctic, a process from a sub-ice sheet in the last glacial period to a sub-ice shelf in the glacial maximum, and, finally, to a glaciomarine state since the last deglacial period was identified in the western Ross Sea. Integrating these findings, the warming processes in the Antarctic were highlighted in the retreat processes of the Ross Ice Shelf in the past. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Ice Sheet Ice Shelf Ice Shelves Ross Ice Shelf Ross Sea Sea ice Directory of Open Access Journals: DOAJ Articles Journal of Marine Science and Engineering 12 2 254 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
magnetic susceptibility AMS 14 C sediment grain size ice-shelf processes paleoenvironmental evolution Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
magnetic susceptibility AMS 14 C sediment grain size ice-shelf processes paleoenvironmental evolution Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Geng Liu Zhongshan Shen Xibin Han Haifeng Wang Weiwei Chen Yi Zhang Pengyun Ma Yibing Li Yun Cai Pengfei Xue Huafeng Qin Chunxia Zhang Chronology and Sedimentary Processes in the Western Ross Sea, Antarctica since the Last Glacial Period |
topic_facet |
magnetic susceptibility AMS 14 C sediment grain size ice-shelf processes paleoenvironmental evolution Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
description |
The stability of contemporary ice shelves is under threat due to global warming, and the geological records in the Ross Sea offer such an opportunity to test the linkage between them. However, the absence of calcareous microfossils in the sediments of the Ross Sea results in uncertainties in establishing a precise chronology for studies. Hence, three sediment cores were collected and studied in terms of radiocarbon dating, magnetic susceptibility, and sediment grain size to reconstruct the environmental processes in the Ross Sea since the last glacial period. The main results are as follows: (1) two grain-size components were identified for the studied cores, which can be correlated to ice-shelf and sea-ice transport, respectively; (2) due to old-carbon contamination and an inconsistent carbon reservoir, the radiocarbon dates were generally underestimated, and as an alternative, changes in magnetic susceptibility of the studied cores can be tuned to the ice-core records to establish a reliable age–depth model and; (3) integrating sediment grain-size changes and comparisons with other paleoenvironmental proxies in the Antarctic, a process from a sub-ice sheet in the last glacial period to a sub-ice shelf in the glacial maximum, and, finally, to a glaciomarine state since the last deglacial period was identified in the western Ross Sea. Integrating these findings, the warming processes in the Antarctic were highlighted in the retreat processes of the Ross Ice Shelf in the past. |
format |
Article in Journal/Newspaper |
author |
Geng Liu Zhongshan Shen Xibin Han Haifeng Wang Weiwei Chen Yi Zhang Pengyun Ma Yibing Li Yun Cai Pengfei Xue Huafeng Qin Chunxia Zhang |
author_facet |
Geng Liu Zhongshan Shen Xibin Han Haifeng Wang Weiwei Chen Yi Zhang Pengyun Ma Yibing Li Yun Cai Pengfei Xue Huafeng Qin Chunxia Zhang |
author_sort |
Geng Liu |
title |
Chronology and Sedimentary Processes in the Western Ross Sea, Antarctica since the Last Glacial Period |
title_short |
Chronology and Sedimentary Processes in the Western Ross Sea, Antarctica since the Last Glacial Period |
title_full |
Chronology and Sedimentary Processes in the Western Ross Sea, Antarctica since the Last Glacial Period |
title_fullStr |
Chronology and Sedimentary Processes in the Western Ross Sea, Antarctica since the Last Glacial Period |
title_full_unstemmed |
Chronology and Sedimentary Processes in the Western Ross Sea, Antarctica since the Last Glacial Period |
title_sort |
chronology and sedimentary processes in the western ross sea, antarctica since the last glacial period |
publisher |
MDPI AG |
publishDate |
2024 |
url |
https://doi.org/10.3390/jmse12020254 https://doaj.org/article/65ad6f216a994a8fab369ce1baf3bc1c |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet Ice Shelf Ice Shelves Ross Ice Shelf Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet Ice Shelf Ice Shelves Ross Ice Shelf Ross Sea Sea ice |
op_source |
Journal of Marine Science and Engineering, Vol 12, Iss 2, p 254 (2024) |
op_relation |
https://www.mdpi.com/2077-1312/12/2/254 https://doaj.org/toc/2077-1312 doi:10.3390/jmse12020254 2077-1312 https://doaj.org/article/65ad6f216a994a8fab369ce1baf3bc1c |
op_doi |
https://doi.org/10.3390/jmse12020254 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
12 |
container_issue |
2 |
container_start_page |
254 |
_version_ |
1810497222089900032 |