An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica
In 2013 an ice core was recovered from Roosevelt Island, an ice dome between two submarine troughs carved by paleo-ice-streams in the Ross Sea, Antarctica. The ice core is part of the Roosevelt Island Climate Evolution (RICE) project and provides new information about the past configuration of the W...
Published in: | Climate of the Past |
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Format: | Article in Journal/Newspaper |
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Copernicus Publications
2020
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Online Access: | https://doi.org/10.5194/cp-16-1691-2020 https://cp.copernicus.org/articles/16/1691/2020/cp-16-1691-2020.pdf https://doaj.org/article/9bfeee16460d49148d38819dccd70a90 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:9bfeee16460d49148d38819dccd70a90 2023-05-15T14:04:01+02:00 An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica J. E. Lee E. J. Brook N. A. N. Bertler C. Buizert T. Baisden T. Blunier V. G. Ciobanu H. Conway D. Dahl-Jensen T. J. Fudge R. Hindmarsh E. D. Keller F. Parrenin J. P. Severinghaus P. Vallelonga E. D. Waddington M. Winstrup 2020-09-01 https://doi.org/10.5194/cp-16-1691-2020 https://cp.copernicus.org/articles/16/1691/2020/cp-16-1691-2020.pdf https://doaj.org/article/9bfeee16460d49148d38819dccd70a90 en eng Copernicus Publications doi:10.5194/cp-16-1691-2020 1814-9324 1814-9332 https://cp.copernicus.org/articles/16/1691/2020/cp-16-1691-2020.pdf https://doaj.org/article/9bfeee16460d49148d38819dccd70a90 undefined Climate of the Past, Vol 16, Pp 1691-1713 (2020) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/10.5194/cp-16-1691-2020 2023-01-22T19:14:01Z In 2013 an ice core was recovered from Roosevelt Island, an ice dome between two submarine troughs carved by paleo-ice-streams in the Ross Sea, Antarctica. The ice core is part of the Roosevelt Island Climate Evolution (RICE) project and provides new information about the past configuration of the West Antarctic Ice Sheet (WAIS) and its retreat during the last deglaciation. In this work we present the RICE17 chronology, which establishes the depth–age relationship for the top 754 m of the 763 m core. RICE17 is a composite chronology combining annual layer interpretations for 0–343 m (Winstrup et al., 2019) with new estimates for gas and ice ages based on synchronization of CH4 and δ18Oatm records to corresponding records from the WAIS Divide ice core and by modeling of the gas age–ice age difference. Novel aspects of this work include the following: (1) an automated algorithm for multiproxy stratigraphic synchronization of high-resolution gas records; (2) synchronization using centennial-scale variations in methane for pre-anthropogenic time periods (60–720 m, 1971 CE to 30 ka), a strategy applicable for future ice cores; and (3) the observation of a continuous climate record back to ∼65 ka providing evidence that the Roosevelt Island Ice Dome was a constant feature throughout the last glacial period. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice core Ice Sheet Roosevelt Island Ross Sea Unknown Antarctic Ross Sea West Antarctic Ice Sheet Roosevelt Island ENVELOPE(-162.000,-162.000,-79.283,-79.283) Climate of the Past 16 5 1691 1713 |
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Open Polar |
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op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir J. E. Lee E. J. Brook N. A. N. Bertler C. Buizert T. Baisden T. Blunier V. G. Ciobanu H. Conway D. Dahl-Jensen T. J. Fudge R. Hindmarsh E. D. Keller F. Parrenin J. P. Severinghaus P. Vallelonga E. D. Waddington M. Winstrup An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica |
topic_facet |
geo envir |
description |
In 2013 an ice core was recovered from Roosevelt Island, an ice dome between two submarine troughs carved by paleo-ice-streams in the Ross Sea, Antarctica. The ice core is part of the Roosevelt Island Climate Evolution (RICE) project and provides new information about the past configuration of the West Antarctic Ice Sheet (WAIS) and its retreat during the last deglaciation. In this work we present the RICE17 chronology, which establishes the depth–age relationship for the top 754 m of the 763 m core. RICE17 is a composite chronology combining annual layer interpretations for 0–343 m (Winstrup et al., 2019) with new estimates for gas and ice ages based on synchronization of CH4 and δ18Oatm records to corresponding records from the WAIS Divide ice core and by modeling of the gas age–ice age difference. Novel aspects of this work include the following: (1) an automated algorithm for multiproxy stratigraphic synchronization of high-resolution gas records; (2) synchronization using centennial-scale variations in methane for pre-anthropogenic time periods (60–720 m, 1971 CE to 30 ka), a strategy applicable for future ice cores; and (3) the observation of a continuous climate record back to ∼65 ka providing evidence that the Roosevelt Island Ice Dome was a constant feature throughout the last glacial period. |
format |
Article in Journal/Newspaper |
author |
J. E. Lee E. J. Brook N. A. N. Bertler C. Buizert T. Baisden T. Blunier V. G. Ciobanu H. Conway D. Dahl-Jensen T. J. Fudge R. Hindmarsh E. D. Keller F. Parrenin J. P. Severinghaus P. Vallelonga E. D. Waddington M. Winstrup |
author_facet |
J. E. Lee E. J. Brook N. A. N. Bertler C. Buizert T. Baisden T. Blunier V. G. Ciobanu H. Conway D. Dahl-Jensen T. J. Fudge R. Hindmarsh E. D. Keller F. Parrenin J. P. Severinghaus P. Vallelonga E. D. Waddington M. Winstrup |
author_sort |
J. E. Lee |
title |
An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica |
title_short |
An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica |
title_full |
An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica |
title_fullStr |
An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica |
title_full_unstemmed |
An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica |
title_sort |
83 000-year-old ice core from roosevelt island, ross sea, antarctica |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/cp-16-1691-2020 https://cp.copernicus.org/articles/16/1691/2020/cp-16-1691-2020.pdf https://doaj.org/article/9bfeee16460d49148d38819dccd70a90 |
long_lat |
ENVELOPE(-162.000,-162.000,-79.283,-79.283) |
geographic |
Antarctic Ross Sea West Antarctic Ice Sheet Roosevelt Island |
geographic_facet |
Antarctic Ross Sea West Antarctic Ice Sheet Roosevelt Island |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet Roosevelt Island Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet Roosevelt Island Ross Sea |
op_source |
Climate of the Past, Vol 16, Pp 1691-1713 (2020) |
op_relation |
doi:10.5194/cp-16-1691-2020 1814-9324 1814-9332 https://cp.copernicus.org/articles/16/1691/2020/cp-16-1691-2020.pdf https://doaj.org/article/9bfeee16460d49148d38819dccd70a90 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-16-1691-2020 |
container_title |
Climate of the Past |
container_volume |
16 |
container_issue |
5 |
container_start_page |
1691 |
op_container_end_page |
1713 |
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1766274944751108096 |