An age scale for new climate records from Sherman Island, West Antarctica
Few ice cores from the Amundsen Sea and Bellingshausen Sea sectors of the West Antarctic Ice Sheet (WAIS) extend back in time further than a few hundred years. The WAIS is believed to be susceptible to collapse as a result of anthropogenic climate change and may have at least partially collapsed dur...
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ftdoajarticles:oai:doaj.org/article:a6c78b99bce640a29726350a039a3fe0 2023-09-05T13:11:04+02:00 An age scale for new climate records from Sherman Island, West Antarctica I. Rowell C. Martin R. Mulvaney H. Pryer D. Tetzner E. Doyle H. M. Talasila J. Li E. Wolff 2023-08-01T00:00:00Z https://doi.org/10.5194/cp-19-1699-2023 https://doaj.org/article/a6c78b99bce640a29726350a039a3fe0 EN eng Copernicus Publications https://cp.copernicus.org/articles/19/1699/2023/cp-19-1699-2023.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-19-1699-2023 1814-9324 1814-9332 https://doaj.org/article/a6c78b99bce640a29726350a039a3fe0 Climate of the Past, Vol 19, Pp 1699-1714 (2023) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2023 ftdoajarticles https://doi.org/10.5194/cp-19-1699-2023 2023-08-20T00:34:31Z Few ice cores from the Amundsen Sea and Bellingshausen Sea sectors of the West Antarctic Ice Sheet (WAIS) extend back in time further than a few hundred years. The WAIS is believed to be susceptible to collapse as a result of anthropogenic climate change and may have at least partially collapsed during the Last Interglacial (LIG) period. Understanding the stability of the WAIS during warm periods such as the LIG and Holocene is important. As part of the WACSWAIN (WArm Climate Stability of the West Antarctic ice sheet in the last INterglacial) project, the British Antarctic Survey's (BAS) Rapid Access Isotope Drill (RAID) was deployed in 2020 on Sherman Island in the Abbot Ice Shelf, West Antarctica. We drilled a 323 m deep borehole, with discrete samples of ice chippings collected that cover the entire depth range of the drilled ice. The samples were analysed for stable water isotope composition and major ion content at BAS from 2020–2022. Using annual layer counting of chemical records, volcanic horizon identification and ice modelling, an age scale for the record of 1724 discrete samples is presented. The Sherman Island ice record extends back to greater than 1240 years, providing the oldest, continuous ice-derived palaeoclimate records in the coastal Amundsen and Bellingshausen Sea sectors to date. We demonstrate the potential for recovery of a complete Holocene climate record from Sherman Island in the future and confidence in the ability of RAID samples to contain sufficiently resolved records for meaningful climatic interpretation. Article in Journal/Newspaper Abbot Ice Shelf Amundsen Sea Antarc* Antarctic Antarctica Bellingshausen Sea Ice Sheet Ice Shelf Sherman Island West Antarctica Directory of Open Access Journals: DOAJ Articles Abbot Ice Shelf ENVELOPE(-96.000,-96.000,-72.750,-72.750) Amundsen Sea Antarctic Bellingshausen Sea Sherman Island ENVELOPE(-100.000,-100.000,-73.050,-73.050) West Antarctic Ice Sheet West Antarctica Climate of the Past 19 8 1699 1714 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 I. Rowell C. Martin R. Mulvaney H. Pryer D. Tetzner E. Doyle H. M. Talasila J. Li E. Wolff An age scale for new climate records from Sherman Island, West Antarctica |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
Few ice cores from the Amundsen Sea and Bellingshausen Sea sectors of the West Antarctic Ice Sheet (WAIS) extend back in time further than a few hundred years. The WAIS is believed to be susceptible to collapse as a result of anthropogenic climate change and may have at least partially collapsed during the Last Interglacial (LIG) period. Understanding the stability of the WAIS during warm periods such as the LIG and Holocene is important. As part of the WACSWAIN (WArm Climate Stability of the West Antarctic ice sheet in the last INterglacial) project, the British Antarctic Survey's (BAS) Rapid Access Isotope Drill (RAID) was deployed in 2020 on Sherman Island in the Abbot Ice Shelf, West Antarctica. We drilled a 323 m deep borehole, with discrete samples of ice chippings collected that cover the entire depth range of the drilled ice. The samples were analysed for stable water isotope composition and major ion content at BAS from 2020–2022. Using annual layer counting of chemical records, volcanic horizon identification and ice modelling, an age scale for the record of 1724 discrete samples is presented. The Sherman Island ice record extends back to greater than 1240 years, providing the oldest, continuous ice-derived palaeoclimate records in the coastal Amundsen and Bellingshausen Sea sectors to date. We demonstrate the potential for recovery of a complete Holocene climate record from Sherman Island in the future and confidence in the ability of RAID samples to contain sufficiently resolved records for meaningful climatic interpretation. |
format |
Article in Journal/Newspaper |
author |
I. Rowell C. Martin R. Mulvaney H. Pryer D. Tetzner E. Doyle H. M. Talasila J. Li E. Wolff |
author_facet |
I. Rowell C. Martin R. Mulvaney H. Pryer D. Tetzner E. Doyle H. M. Talasila J. Li E. Wolff |
author_sort |
I. Rowell |
title |
An age scale for new climate records from Sherman Island, West Antarctica |
title_short |
An age scale for new climate records from Sherman Island, West Antarctica |
title_full |
An age scale for new climate records from Sherman Island, West Antarctica |
title_fullStr |
An age scale for new climate records from Sherman Island, West Antarctica |
title_full_unstemmed |
An age scale for new climate records from Sherman Island, West Antarctica |
title_sort |
age scale for new climate records from sherman island, west antarctica |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/cp-19-1699-2023 https://doaj.org/article/a6c78b99bce640a29726350a039a3fe0 |
long_lat |
ENVELOPE(-96.000,-96.000,-72.750,-72.750) ENVELOPE(-100.000,-100.000,-73.050,-73.050) |
geographic |
Abbot Ice Shelf Amundsen Sea Antarctic Bellingshausen Sea Sherman Island West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Abbot Ice Shelf Amundsen Sea Antarctic Bellingshausen Sea Sherman Island West Antarctic Ice Sheet West Antarctica |
genre |
Abbot Ice Shelf Amundsen Sea Antarc* Antarctic Antarctica Bellingshausen Sea Ice Sheet Ice Shelf Sherman Island West Antarctica |
genre_facet |
Abbot Ice Shelf Amundsen Sea Antarc* Antarctic Antarctica Bellingshausen Sea Ice Sheet Ice Shelf Sherman Island West Antarctica |
op_source |
Climate of the Past, Vol 19, Pp 1699-1714 (2023) |
op_relation |
https://cp.copernicus.org/articles/19/1699/2023/cp-19-1699-2023.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-19-1699-2023 1814-9324 1814-9332 https://doaj.org/article/a6c78b99bce640a29726350a039a3fe0 |
op_doi |
https://doi.org/10.5194/cp-19-1699-2023 |
container_title |
Climate of the Past |
container_volume |
19 |
container_issue |
8 |
container_start_page |
1699 |
op_container_end_page |
1714 |
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1776203752411234304 |