Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition
Radiometric dating of glacial terminations over the past 640,000 years suggests pacing by Earth’s climatic precession, with each glacial-interglacial period spanning four or five cycles of ~20,000 years. However, the lack of firm age estimates for older Pleistocene terminations confounds attempts to...
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ftucambridgeesc:oai:eprints.esc.cam.ac.uk:4673 2023-05-15T17:32:25+02:00 Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition Bajo, Petra Drysdale, Russell N. Woodhead, Jon D. Hellstrom, John C. Hodell, David Ferretti, Patrizia Voelker, Antje H. L. Zanchetta, Giovanni Rodrigues, Teresa Wolff, Eric Tyler, Jonathan Frisia, Silvia Spötl, Christoph Fallick, Anthony E. 2020 text http://eprints.esc.cam.ac.uk/4673/ http://eprints.esc.cam.ac.uk/4673/1/aaw1114_CombinedPDF_v3.pdf https://doi.org/10.1126/science.aaw1114 en eng AAAS http://eprints.esc.cam.ac.uk/4673/1/aaw1114_CombinedPDF_v3.pdf Bajo, Petra and Drysdale, Russell N. and Woodhead, Jon D. and Hellstrom, John C. and Hodell, David and Ferretti, Patrizia and Voelker, Antje H. L. and Zanchetta, Giovanni and Rodrigues, Teresa and Wolff, Eric and Tyler, Jonathan and Frisia, Silvia and Spötl, Christoph and Fallick, Anthony E. (2020) Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition. Science, 367 (6483). pp. 1235-1239. ISSN 0036-8075 DOI https://doi.org/10.1126/science.aaw1114 <https://doi.org/10.1126/science.aaw1114> 01 - Climate Change and Earth-Ocean Atmosphere Systems Article PeerReviewed 2020 ftucambridgeesc https://doi.org/10.1126/science.aaw1114 2020-08-27T18:10:05Z Radiometric dating of glacial terminations over the past 640,000 years suggests pacing by Earth’s climatic precession, with each glacial-interglacial period spanning four or five cycles of ~20,000 years. However, the lack of firm age estimates for older Pleistocene terminations confounds attempts to test the persistence of precession forcing. We combine an Italian speleothem record anchored by a uranium-lead chronology with North Atlantic ocean data to show that the first two deglaciations of the so-called 100,000-year world are separated by two obliquity cycles, with each termination starting at the same high phase of obliquity, but at opposing phases of precession. An assessment of 11 radiometrically dated terminations spanning the past million years suggests that obliquity exerted a persistent influence on not only their initiation but also their duration. Article in Journal/Newspaper North Atlantic University of Cambridge, Department of Earth Sciences: ESC Publications Science 367 6483 1235 1239 |
institution |
Open Polar |
collection |
University of Cambridge, Department of Earth Sciences: ESC Publications |
op_collection_id |
ftucambridgeesc |
language |
English |
topic |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
spellingShingle |
01 - Climate Change and Earth-Ocean Atmosphere Systems Bajo, Petra Drysdale, Russell N. Woodhead, Jon D. Hellstrom, John C. Hodell, David Ferretti, Patrizia Voelker, Antje H. L. Zanchetta, Giovanni Rodrigues, Teresa Wolff, Eric Tyler, Jonathan Frisia, Silvia Spötl, Christoph Fallick, Anthony E. Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition |
topic_facet |
01 - Climate Change and Earth-Ocean Atmosphere Systems |
description |
Radiometric dating of glacial terminations over the past 640,000 years suggests pacing by Earth’s climatic precession, with each glacial-interglacial period spanning four or five cycles of ~20,000 years. However, the lack of firm age estimates for older Pleistocene terminations confounds attempts to test the persistence of precession forcing. We combine an Italian speleothem record anchored by a uranium-lead chronology with North Atlantic ocean data to show that the first two deglaciations of the so-called 100,000-year world are separated by two obliquity cycles, with each termination starting at the same high phase of obliquity, but at opposing phases of precession. An assessment of 11 radiometrically dated terminations spanning the past million years suggests that obliquity exerted a persistent influence on not only their initiation but also their duration. |
format |
Article in Journal/Newspaper |
author |
Bajo, Petra Drysdale, Russell N. Woodhead, Jon D. Hellstrom, John C. Hodell, David Ferretti, Patrizia Voelker, Antje H. L. Zanchetta, Giovanni Rodrigues, Teresa Wolff, Eric Tyler, Jonathan Frisia, Silvia Spötl, Christoph Fallick, Anthony E. |
author_facet |
Bajo, Petra Drysdale, Russell N. Woodhead, Jon D. Hellstrom, John C. Hodell, David Ferretti, Patrizia Voelker, Antje H. L. Zanchetta, Giovanni Rodrigues, Teresa Wolff, Eric Tyler, Jonathan Frisia, Silvia Spötl, Christoph Fallick, Anthony E. |
author_sort |
Bajo, Petra |
title |
Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition |
title_short |
Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition |
title_full |
Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition |
title_fullStr |
Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition |
title_full_unstemmed |
Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition |
title_sort |
persistent influence of obliquity on ice age terminations since the middle pleistocene transition |
publisher |
AAAS |
publishDate |
2020 |
url |
http://eprints.esc.cam.ac.uk/4673/ http://eprints.esc.cam.ac.uk/4673/1/aaw1114_CombinedPDF_v3.pdf https://doi.org/10.1126/science.aaw1114 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://eprints.esc.cam.ac.uk/4673/1/aaw1114_CombinedPDF_v3.pdf Bajo, Petra and Drysdale, Russell N. and Woodhead, Jon D. and Hellstrom, John C. and Hodell, David and Ferretti, Patrizia and Voelker, Antje H. L. and Zanchetta, Giovanni and Rodrigues, Teresa and Wolff, Eric and Tyler, Jonathan and Frisia, Silvia and Spötl, Christoph and Fallick, Anthony E. (2020) Persistent influence of obliquity on ice age terminations since the Middle Pleistocene transition. Science, 367 (6483). pp. 1235-1239. ISSN 0036-8075 DOI https://doi.org/10.1126/science.aaw1114 <https://doi.org/10.1126/science.aaw1114> |
op_doi |
https://doi.org/10.1126/science.aaw1114 |
container_title |
Science |
container_volume |
367 |
container_issue |
6483 |
container_start_page |
1235 |
op_container_end_page |
1239 |
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1766130551115218944 |