Evidence for Obliquity Forcing of Glacial Termination II
Variations in the intensity of high-latitude Northern Hemisphere summer insolation, driven largely by precession of the equinoxes, are widely thought to control the timing of Late Pleistocene glacial terminations. However, recently it has been suggested that changes in Earth’s obliquity may be a mor...
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ftunivpisairis:oai:arpi.unipi.it:11568/135067 2024-04-21T08:07:38+00:00 Evidence for Obliquity Forcing of Glacial Termination II Drysdale R. N. Hellstrom, J. Fallick A. E. Sanchez Goni I. Couchoud, I. McDonald, R. Mass R. Lohmann G. Isola I. ZANCHETTA, GIOVANNI Drysdale, R. N. Hellstrom, J. Zanchetta, Giovanni Fallick, A. E. Sanchez Goni, I. Couchoud, I. Mcdonald, R. Mass, R. Lohmann, G. Isola, I. 2009 http://hdl.handle.net/11568/135067 eng eng info:eu-repo/semantics/altIdentifier/wos/000269887900035 volume:325 firstpage:1527 lastpage:1531 numberofpages:5 journal:SCIENCE http://hdl.handle.net/11568/135067 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-70349324798 info:eu-repo/semantics/article 2009 ftunivpisairis 2024-03-28T01:25:59Z Variations in the intensity of high-latitude Northern Hemisphere summer insolation, driven largely by precession of the equinoxes, are widely thought to control the timing of Late Pleistocene glacial terminations. However, recently it has been suggested that changes in Earth’s obliquity may be a more important mechanism. We present a new speleothem-based North Atlantic marine chronology that shows that the penultimate glacial termination (Termination II) commenced 141,000 T 2500 years before the present, too early to be explained by Northern Hemisphere summer insolation but consistent with changes in Earth’s obliquity. Our record reveals that Terminations I and II are separated by three obliquity cycles and that they started at near-identical obliquity phases Article in Journal/Newspaper North Atlantic ARPI - Archivio della Ricerca dell'Università di Pisa |
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Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
description |
Variations in the intensity of high-latitude Northern Hemisphere summer insolation, driven largely by precession of the equinoxes, are widely thought to control the timing of Late Pleistocene glacial terminations. However, recently it has been suggested that changes in Earth’s obliquity may be a more important mechanism. We present a new speleothem-based North Atlantic marine chronology that shows that the penultimate glacial termination (Termination II) commenced 141,000 T 2500 years before the present, too early to be explained by Northern Hemisphere summer insolation but consistent with changes in Earth’s obliquity. Our record reveals that Terminations I and II are separated by three obliquity cycles and that they started at near-identical obliquity phases |
author2 |
Drysdale, R. N. Hellstrom, J. Zanchetta, Giovanni Fallick, A. E. Sanchez Goni, I. Couchoud, I. Mcdonald, R. Mass, R. Lohmann, G. Isola, I. |
format |
Article in Journal/Newspaper |
author |
Drysdale R. N. Hellstrom, J. Fallick A. E. Sanchez Goni I. Couchoud, I. McDonald, R. Mass R. Lohmann G. Isola I. ZANCHETTA, GIOVANNI |
spellingShingle |
Drysdale R. N. Hellstrom, J. Fallick A. E. Sanchez Goni I. Couchoud, I. McDonald, R. Mass R. Lohmann G. Isola I. ZANCHETTA, GIOVANNI Evidence for Obliquity Forcing of Glacial Termination II |
author_facet |
Drysdale R. N. Hellstrom, J. Fallick A. E. Sanchez Goni I. Couchoud, I. McDonald, R. Mass R. Lohmann G. Isola I. ZANCHETTA, GIOVANNI |
author_sort |
Drysdale R. N. |
title |
Evidence for Obliquity Forcing of Glacial Termination II |
title_short |
Evidence for Obliquity Forcing of Glacial Termination II |
title_full |
Evidence for Obliquity Forcing of Glacial Termination II |
title_fullStr |
Evidence for Obliquity Forcing of Glacial Termination II |
title_full_unstemmed |
Evidence for Obliquity Forcing of Glacial Termination II |
title_sort |
evidence for obliquity forcing of glacial termination ii |
publishDate |
2009 |
url |
http://hdl.handle.net/11568/135067 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000269887900035 volume:325 firstpage:1527 lastpage:1531 numberofpages:5 journal:SCIENCE http://hdl.handle.net/11568/135067 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-70349324798 |
_version_ |
1796947608327946240 |