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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ftdatacite:10.48350/158785 2023-05-15T13:47:04+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 https://dx.doi.org/10.48350/158785 https://boris.unibe.ch/158785/ unknown American Geophysical Union open access publisher holds copyright http://purl.org/coar/access_right/c_abf2 530 Physics Text article-journal journal article ScholarlyArticle 1996 ftdatacite https://doi.org/10.48350/158785 2021-11-05T12:55:41Z 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. Text Antarc* Antarctica Greenland GRIP ice core Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) Greenland |
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530 Physics |
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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 |
Text |
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://dx.doi.org/10.48350/158785 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_rights |
open access publisher holds copyright http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.48350/158785 |
_version_ |
1766246268716187648 |