A tentative reconstruction of the last interglacial and glacial inception in Greenland based on new gas measurements in the Greenland Ice Core Project (GRIP) ice core
The disturbed stratigraphy of the ice in the lowest 10% of the Greenland GRIP ice core prevents direct access to climatic information older than 110 kyr. This is especially regretful since this period covers the previous interglacial corresponding to marine isotopic stage 5e (MIS 5e, 130-120 kyr B.P...
Published in: | Journal of Geophysical Research |
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Washington, American Geophysical Union (AGU)
2022
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Online Access: | https://doi.org/10.1029/2002jd003147 http://infoscience.epfl.ch/record/298265 |
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ftinfoscience:oai:infoscience.epfl.ch:298265 2023-05-15T13:43:17+02:00 A tentative reconstruction of the last interglacial and glacial inception in Greenland based on new gas measurements in the Greenland Ice Core Project (GRIP) ice core Landais, A. Chappellaz, J. Delmotte, M. Jouzel, J. Blunier, T. Bourg, C. Caillon, N. Cherrier, S. Malaize, B. Masson-Delmotte, V. Raynaud, D. Schwander, J. Steffensen, J. P. 2022-11-23T16:10:58Z https://doi.org/10.1029/2002jd003147 http://infoscience.epfl.ch/record/298265 unknown Washington, American Geophysical Union (AGU) doi:10.1029/2002jd003147 isi:000185477100003 http://infoscience.epfl.ch/record/298265 http://infoscience.epfl.ch/record/298265 Text 2022 ftinfoscience https://doi.org/10.1029/2002jd003147 2023-02-13T23:12:29Z The disturbed stratigraphy of the ice in the lowest 10% of the Greenland GRIP ice core prevents direct access to climatic information older than 110 kyr. This is especially regretful since this period covers the previous interglacial corresponding to marine isotopic stage 5e (MIS 5e, 130-120 kyr B.P.). Here we present a tentative reconstruction of the disturbed GRIP chronology based on the succession of globally well mixed gas parameters. The GRIP δ18Oice chronological sequence is obtained by comparing a new set of δ18O of atmospheric O2 and CH4 measurements from the bottom section of the GRIP core with their counterpart in the Vostok Antarctic profiles. This comparison clearly identifies ice from the penultimate glacial maximum (MIS 6, 190-130 kyr B.P.) in the GRIP core. Further it allows rough reconstruction of the last interglacial period and of the last glacial inception in Greenland which appears to lay its Antarctic counterpart. Our data suggest that while Antarctica is already entering into a glaciation, Greenland is still experiencing a warm maximum during MIS 5e. © 2003 by the American Geophysical Union. Text Antarc* Antarctic Antarctica Greenland Greenland ice core Greenland Ice core Project GRIP ice core EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) Antarctic Greenland Journal of Geophysical Research 108 D18 |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
op_collection_id |
ftinfoscience |
language |
unknown |
description |
The disturbed stratigraphy of the ice in the lowest 10% of the Greenland GRIP ice core prevents direct access to climatic information older than 110 kyr. This is especially regretful since this period covers the previous interglacial corresponding to marine isotopic stage 5e (MIS 5e, 130-120 kyr B.P.). Here we present a tentative reconstruction of the disturbed GRIP chronology based on the succession of globally well mixed gas parameters. The GRIP δ18Oice chronological sequence is obtained by comparing a new set of δ18O of atmospheric O2 and CH4 measurements from the bottom section of the GRIP core with their counterpart in the Vostok Antarctic profiles. This comparison clearly identifies ice from the penultimate glacial maximum (MIS 6, 190-130 kyr B.P.) in the GRIP core. Further it allows rough reconstruction of the last interglacial period and of the last glacial inception in Greenland which appears to lay its Antarctic counterpart. Our data suggest that while Antarctica is already entering into a glaciation, Greenland is still experiencing a warm maximum during MIS 5e. © 2003 by the American Geophysical Union. |
format |
Text |
author |
Landais, A. Chappellaz, J. Delmotte, M. Jouzel, J. Blunier, T. Bourg, C. Caillon, N. Cherrier, S. Malaize, B. Masson-Delmotte, V. Raynaud, D. Schwander, J. Steffensen, J. P. |
spellingShingle |
Landais, A. Chappellaz, J. Delmotte, M. Jouzel, J. Blunier, T. Bourg, C. Caillon, N. Cherrier, S. Malaize, B. Masson-Delmotte, V. Raynaud, D. Schwander, J. Steffensen, J. P. A tentative reconstruction of the last interglacial and glacial inception in Greenland based on new gas measurements in the Greenland Ice Core Project (GRIP) ice core |
author_facet |
Landais, A. Chappellaz, J. Delmotte, M. Jouzel, J. Blunier, T. Bourg, C. Caillon, N. Cherrier, S. Malaize, B. Masson-Delmotte, V. Raynaud, D. Schwander, J. Steffensen, J. P. |
author_sort |
Landais, A. |
title |
A tentative reconstruction of the last interglacial and glacial inception in Greenland based on new gas measurements in the Greenland Ice Core Project (GRIP) ice core |
title_short |
A tentative reconstruction of the last interglacial and glacial inception in Greenland based on new gas measurements in the Greenland Ice Core Project (GRIP) ice core |
title_full |
A tentative reconstruction of the last interglacial and glacial inception in Greenland based on new gas measurements in the Greenland Ice Core Project (GRIP) ice core |
title_fullStr |
A tentative reconstruction of the last interglacial and glacial inception in Greenland based on new gas measurements in the Greenland Ice Core Project (GRIP) ice core |
title_full_unstemmed |
A tentative reconstruction of the last interglacial and glacial inception in Greenland based on new gas measurements in the Greenland Ice Core Project (GRIP) ice core |
title_sort |
tentative reconstruction of the last interglacial and glacial inception in greenland based on new gas measurements in the greenland ice core project (grip) ice core |
publisher |
Washington, American Geophysical Union (AGU) |
publishDate |
2022 |
url |
https://doi.org/10.1029/2002jd003147 http://infoscience.epfl.ch/record/298265 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Antarctica Greenland Greenland ice core Greenland Ice core Project GRIP ice core |
genre_facet |
Antarc* Antarctic Antarctica Greenland Greenland ice core Greenland Ice core Project GRIP ice core |
op_source |
http://infoscience.epfl.ch/record/298265 |
op_relation |
doi:10.1029/2002jd003147 isi:000185477100003 http://infoscience.epfl.ch/record/298265 |
op_doi |
https://doi.org/10.1029/2002jd003147 |
container_title |
Journal of Geophysical Research |
container_volume |
108 |
container_issue |
D18 |
_version_ |
1766186747847245824 |