Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve
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 CO2 comparable to present....
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Geological Society of America
2016
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Online Access: | https://eprints.whiterose.ac.uk/104333/ https://eprints.whiterose.ac.uk/104333/1/Gasson_2016_Geology.pdf https://doi.org/10.1130/G38104.1 |
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ftleedsuniv:oai:eprints.whiterose.ac.uk:104333 2023-05-15T13:49:59+02:00 Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve Gasson, E. DeConto, R. Pollard, D. 2016-08-23 text https://eprints.whiterose.ac.uk/104333/ https://eprints.whiterose.ac.uk/104333/1/Gasson_2016_Geology.pdf https://doi.org/10.1130/G38104.1 en eng Geological Society of America https://eprints.whiterose.ac.uk/104333/1/Gasson_2016_Geology.pdf Gasson, E. orcid.org/0000-0003-4653-6217 , DeConto, R. and Pollard, D. (2016) Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve. Geology. ISSN 0091-7613 Article PeerReviewed 2016 ftleedsuniv https://doi.org/10.1130/G38104.1 2023-01-30T21:45:47Z 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 CO2 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 White Rose Research Online (Universities of Leeds, Sheffield & York) Antarctic The Antarctic Geology 44 10 827 830 |
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Open Polar |
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White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
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 CO2 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, E. DeConto, R. Pollard, D. |
spellingShingle |
Gasson, E. DeConto, R. Pollard, D. Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve |
author_facet |
Gasson, E. DeConto, R. Pollard, D. |
author_sort |
Gasson, E. |
title |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve |
title_short |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve |
title_full |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve |
title_fullStr |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve |
title_full_unstemmed |
Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve |
title_sort |
modeling the oxygen isotope composition of the antarctic ice sheet and its significance to pliocene sea leve |
publisher |
Geological Society of America |
publishDate |
2016 |
url |
https://eprints.whiterose.ac.uk/104333/ https://eprints.whiterose.ac.uk/104333/1/Gasson_2016_Geology.pdf https://doi.org/10.1130/G38104.1 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_relation |
https://eprints.whiterose.ac.uk/104333/1/Gasson_2016_Geology.pdf Gasson, E. orcid.org/0000-0003-4653-6217 , DeConto, R. and Pollard, D. (2016) Modeling the oxygen isotope composition of the Antarctic ice sheet and its significance to Pliocene sea leve. Geology. ISSN 0091-7613 |
op_doi |
https://doi.org/10.1130/G38104.1 |
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Geology |
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44 |
container_issue |
10 |
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827 |
op_container_end_page |
830 |
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1766252674494234624 |