δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core
δ18O measured on oxygen in the bubble air from ice cores is a proxy for continental ice volume and is used to synchronize cores from Greenland and Antarctica. A record measured on ice samples from the Central Greenland deep ice core GRIP, spanning the Last Glacial Maximum and the Holocene, shows tha...
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American Geophysical Union
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Online Access: | https://boris.unibe.ch/158785/1/fuchs96grl.pdf https://boris.unibe.ch/158785/ |
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ftunivbern:oai:boris.unibe.ch:158785 2023-08-20T04:00:15+02:00 δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core Fuchs, Andreas Leuenberger, Markus C. 1996 application/pdf https://boris.unibe.ch/158785/1/fuchs96grl.pdf https://boris.unibe.ch/158785/ eng eng American Geophysical Union https://boris.unibe.ch/158785/ info:eu-repo/semantics/openAccess Fuchs, Andreas; Leuenberger, Markus C. (1996). δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core. Geophysical Research Letters, 23(9), pp. 1049-1052. American Geophysical Union 10.1029/96GL00588 <http://dx.doi.org/10.1029/96GL00588> 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 1996 ftunivbern https://doi.org/10.1029/96GL00588 2023-07-31T22:08:19Z δ18O measured on oxygen in the bubble air from ice cores is a proxy for continental ice volume and is used to synchronize cores from Greenland and Antarctica. A record measured on ice samples from the Central Greenland deep ice core GRIP, spanning the Last Glacial Maximum and the Holocene, shows that δ18O of atmospheric oxygen lags δ18O of ice by about 4000 to 1000 years. The smooth isotope record of atmospheric oxygen shows a steady ice sheet decay beginning around 18′000 years BP taking the time lag into account. However, measurements performed on ice from the GRIP core older than 100 kyrs do not correlate with the corresponding Vostok record and show transitions too fast to be typical for ice sheet build-up or decay. Furthermore, the expected time lag between δ18Oatm and δ18O of seawater or δ18O of ice is absent or has even turned into a lead. Climatic interpretation of the fast δ18Oice transitions is not consistent with our δ18Oatm results. The stratigraphy is possibly irregular and if so, this stops us from constructing a steady age-depth relation in the deepest part of the GRIP ice core. Article in Journal/Newspaper Antarc* Antarctica Greenland GRIP ice core Ice Sheet BORIS (Bern Open Repository and Information System, University of Bern) Greenland Geophysical Research Letters 23 9 1049 1052 |
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Open Polar |
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BORIS (Bern Open Repository and Information System, University of Bern) |
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ftunivbern |
language |
English |
topic |
530 Physics |
spellingShingle |
530 Physics Fuchs, Andreas Leuenberger, Markus C. δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core |
topic_facet |
530 Physics |
description |
δ18O measured on oxygen in the bubble air from ice cores is a proxy for continental ice volume and is used to synchronize cores from Greenland and Antarctica. A record measured on ice samples from the Central Greenland deep ice core GRIP, spanning the Last Glacial Maximum and the Holocene, shows that δ18O of atmospheric oxygen lags δ18O of ice by about 4000 to 1000 years. The smooth isotope record of atmospheric oxygen shows a steady ice sheet decay beginning around 18′000 years BP taking the time lag into account. However, measurements performed on ice from the GRIP core older than 100 kyrs do not correlate with the corresponding Vostok record and show transitions too fast to be typical for ice sheet build-up or decay. Furthermore, the expected time lag between δ18Oatm and δ18O of seawater or δ18O of ice is absent or has even turned into a lead. Climatic interpretation of the fast δ18Oice transitions is not consistent with our δ18Oatm results. The stratigraphy is possibly irregular and if so, this stops us from constructing a steady age-depth relation in the deepest part of the GRIP ice core. |
format |
Article in Journal/Newspaper |
author |
Fuchs, Andreas Leuenberger, Markus C. |
author_facet |
Fuchs, Andreas Leuenberger, Markus C. |
author_sort |
Fuchs, Andreas |
title |
δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core |
title_short |
δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core |
title_full |
δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core |
title_fullStr |
δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core |
title_full_unstemmed |
δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core |
title_sort |
δ18o of atmospheric oxygen measured on the grip ice core document stratigraphic disturbances in the lowest 10% of the core |
publisher |
American Geophysical Union |
publishDate |
1996 |
url |
https://boris.unibe.ch/158785/1/fuchs96grl.pdf https://boris.unibe.ch/158785/ |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarc* Antarctica Greenland GRIP ice core Ice Sheet |
genre_facet |
Antarc* Antarctica Greenland GRIP ice core Ice Sheet |
op_source |
Fuchs, Andreas; Leuenberger, Markus C. (1996). δ18O of atmospheric oxygen measured on the GRIP Ice Core Document Stratigraphic disturbances in the lowest 10% of the core. Geophysical Research Letters, 23(9), pp. 1049-1052. American Geophysical Union 10.1029/96GL00588 <http://dx.doi.org/10.1029/96GL00588> |
op_relation |
https://boris.unibe.ch/158785/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/96GL00588 |
container_title |
Geophysical Research Letters |
container_volume |
23 |
container_issue |
9 |
container_start_page |
1049 |
op_container_end_page |
1052 |
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1774717245240377344 |