Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level
Recent estimates of global mean sea level based on the oxygen isotope composition of mid-Pliocene benthic foraminifera vary from 9 to 21 m above present, which has differing implications for the past stability of the Antarctic ice sheet during an interval with atmospheric CO 2 comparable to present....
Published in: | Geology |
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2016
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Online Access: | https://hdl.handle.net/1983/8250c2f5-ee86-4288-8111-0a35c25395f6 https://research-information.bris.ac.uk/en/publications/8250c2f5-ee86-4288-8111-0a35c25395f6 https://doi.org/10.1130/G38104.1 http://www.scopus.com/inward/record.url?scp=84991200360&partnerID=8YFLogxK http://eprints.whiterose.ac.uk/104333/ |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/8250c2f5-ee86-4288-8111-0a35c25395f6 2024-01-28T10:01:42+01:00 Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level Gasson, Edward DeConto, Robert M. Pollard, David 2016-10-01 https://hdl.handle.net/1983/8250c2f5-ee86-4288-8111-0a35c25395f6 https://research-information.bris.ac.uk/en/publications/8250c2f5-ee86-4288-8111-0a35c25395f6 https://doi.org/10.1130/G38104.1 http://www.scopus.com/inward/record.url?scp=84991200360&partnerID=8YFLogxK http://eprints.whiterose.ac.uk/104333/ eng eng info:eu-repo/semantics/openAccess Gasson , E , DeConto , R M & Pollard , D 2016 , ' Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level ' , Geology , vol. 44 , no. 10 , pp. 827-830 . https://doi.org/10.1130/G38104.1 article 2016 ftubristolcris https://doi.org/10.1130/G38104.1 2024-01-04T23:57:36Z Recent estimates of global mean sea level based on the oxygen isotope composition of mid-Pliocene benthic foraminifera vary from 9 to 21 m above present, which has differing implications for the past stability of the Antarctic ice sheet during an interval with atmospheric CO 2 comparable to present. Here we simulate the oxygen isotope composition of the Antarctic ice sheet for a range of configurations using isotope-enabled climate and ice sheet models. We identify which ice sheet configurations are consistent with the oxygen isotope record and suggest a maximum contribution from Antarctica to the mid-Pliocene sea-level highstand of ~13 m. We also highlight that the relationship between the oxygen isotope record and sea level is not constant when ice is lost from deep marine basins, which has important implications for the use of oxygen isotopes as a sea-level proxy. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet University of Bristol: Bristol Research Antarctic The Antarctic Geology 44 10 827 830 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
description |
Recent estimates of global mean sea level based on the oxygen isotope composition of mid-Pliocene benthic foraminifera vary from 9 to 21 m above present, which has differing implications for the past stability of the Antarctic ice sheet during an interval with atmospheric CO 2 comparable to present. Here we simulate the oxygen isotope composition of the Antarctic ice sheet for a range of configurations using isotope-enabled climate and ice sheet models. We identify which ice sheet configurations are consistent with the oxygen isotope record and suggest a maximum contribution from Antarctica to the mid-Pliocene sea-level highstand of ~13 m. We also highlight that the relationship between the oxygen isotope record and sea level is not constant when ice is lost from deep marine basins, which has important implications for the use of oxygen isotopes as a sea-level proxy. |
format |
Article in Journal/Newspaper |
author |
Gasson, Edward DeConto, Robert M. Pollard, David |
spellingShingle |
Gasson, Edward DeConto, Robert M. Pollard, David Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level |
author_facet |
Gasson, Edward DeConto, Robert M. Pollard, David |
author_sort |
Gasson, Edward |
title |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level |
title_short |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level |
title_full |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level |
title_fullStr |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level |
title_full_unstemmed |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level |
title_sort |
modeling the oxygen isotope composition of the antarctic ice sheet and its significance to pliocene sea level |
publishDate |
2016 |
url |
https://hdl.handle.net/1983/8250c2f5-ee86-4288-8111-0a35c25395f6 https://research-information.bris.ac.uk/en/publications/8250c2f5-ee86-4288-8111-0a35c25395f6 https://doi.org/10.1130/G38104.1 http://www.scopus.com/inward/record.url?scp=84991200360&partnerID=8YFLogxK http://eprints.whiterose.ac.uk/104333/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_source |
Gasson , E , DeConto , R M & Pollard , D 2016 , ' Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea level ' , Geology , vol. 44 , no. 10 , pp. 827-830 . https://doi.org/10.1130/G38104.1 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1130/G38104.1 |
container_title |
Geology |
container_volume |
44 |
container_issue |
10 |
container_start_page |
827 |
op_container_end_page |
830 |
_version_ |
1789327017045393408 |