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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ftawi:oai:epic.awi.de:21133 2024-09-15T18:22:50+00:00 Evidence for Obliquity Forcing of Glacial Termination II Drysdale, R. N. Hellstrom, J. C. Zanchetta, G. Fallick, A. E. Sánchez Goñi, M. F. Couchoud, I. McDonald, J. Maas, R. Lohmann, Gerrit Isola, I. 2009 https://epic.awi.de/id/eprint/21133/ https://doi.org/10.1126/science.1170371 https://hdl.handle.net/10013/epic.33422 unknown Drysdale, R. N. , Hellstrom, J. C. , Zanchetta, G. , Fallick, A. E. , Sánchez Goñi, M. F. , Couchoud, I. , McDonald, J. , Maas, R. , Lohmann, G. orcid:0000-0003-2089-733X and Isola, I. (2009) Evidence for Obliquity Forcing of Glacial Termination II , Science, 325 (5947), pp. 1527-1531 . doi:10.1126/science.1170371 <https://doi.org/10.1126/science.1170371> , hdl:10013/epic.33422 EPIC3Science, 325(5947), pp. 1527-1531 Article isiRev 2009 ftawi https://doi.org/10.1126/science.1170371 2024-06-24T04:01:33Z 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 ± 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Science 325 5947 1527 1531 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
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 ± 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. |
format |
Article in Journal/Newspaper |
author |
Drysdale, R. N. Hellstrom, J. C. Zanchetta, G. Fallick, A. E. Sánchez Goñi, M. F. Couchoud, I. McDonald, J. Maas, R. Lohmann, Gerrit Isola, I. |
spellingShingle |
Drysdale, R. N. Hellstrom, J. C. Zanchetta, G. Fallick, A. E. Sánchez Goñi, M. F. Couchoud, I. McDonald, J. Maas, R. Lohmann, Gerrit Isola, I. Evidence for Obliquity Forcing of Glacial Termination II |
author_facet |
Drysdale, R. N. Hellstrom, J. C. Zanchetta, G. Fallick, A. E. Sánchez Goñi, M. F. Couchoud, I. McDonald, J. Maas, R. Lohmann, Gerrit Isola, I. |
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 |
https://epic.awi.de/id/eprint/21133/ https://doi.org/10.1126/science.1170371 https://hdl.handle.net/10013/epic.33422 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
EPIC3Science, 325(5947), pp. 1527-1531 |
op_relation |
Drysdale, R. N. , Hellstrom, J. C. , Zanchetta, G. , Fallick, A. E. , Sánchez Goñi, M. F. , Couchoud, I. , McDonald, J. , Maas, R. , Lohmann, G. orcid:0000-0003-2089-733X and Isola, I. (2009) Evidence for Obliquity Forcing of Glacial Termination II , Science, 325 (5947), pp. 1527-1531 . doi:10.1126/science.1170371 <https://doi.org/10.1126/science.1170371> , hdl:10013/epic.33422 |
op_doi |
https://doi.org/10.1126/science.1170371 |
container_title |
Science |
container_volume |
325 |
container_issue |
5947 |
container_start_page |
1527 |
op_container_end_page |
1531 |
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1810462848414908416 |