Freshwater Forcing of Abrupt Climate Change During the Last Glaciation
Large millennial-scale fluctuations of the southern margin of the North American Laurentide Ice Sheet occurred during the last deglaciation, when the margin was located between about 43° and 49°N. Fluctuations of the ice margin triggered episodic increases in the flux of freshwater to the North Atla...
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American Association for the Advancement of Science (AAAS)
2001
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Online Access: | http://dx.doi.org/10.1126/science.1062517 https://www.science.org/doi/pdf/10.1126/science.1062517 |
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craaas:10.1126/science.1062517 2024-09-15T18:12:21+00:00 Freshwater Forcing of Abrupt Climate Change During the Last Glaciation Clark, Peter U. Marshall, Shawn J. Clarke, Garry K. C. Hostetler, Steven W. Licciardi, Joseph M. Teller, James T. 2001 http://dx.doi.org/10.1126/science.1062517 https://www.science.org/doi/pdf/10.1126/science.1062517 en eng American Association for the Advancement of Science (AAAS) Science volume 293, issue 5528, page 283-287 ISSN 0036-8075 1095-9203 journal-article 2001 craaas https://doi.org/10.1126/science.1062517 2024-07-25T04:01:34Z Large millennial-scale fluctuations of the southern margin of the North American Laurentide Ice Sheet occurred during the last deglaciation, when the margin was located between about 43° and 49°N. Fluctuations of the ice margin triggered episodic increases in the flux of freshwater to the North Atlantic by rerouting continental runoff from the Mississippi River drainage to the Hudson or St. Lawrence Rivers. We found that periods of increased freshwater flow to the North Atlantic occurred at the same time as reductions in the formation of North Atlantic Deep Water, thus providing a mechanism for observed climate variability that may be generally characteristic of times of intermediate global ice volume. Article in Journal/Newspaper Ice Sheet North Atlantic Deep Water North Atlantic AAAS Resource Center (American Association for the Advancement of Science) Science 293 5528 283 287 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
Large millennial-scale fluctuations of the southern margin of the North American Laurentide Ice Sheet occurred during the last deglaciation, when the margin was located between about 43° and 49°N. Fluctuations of the ice margin triggered episodic increases in the flux of freshwater to the North Atlantic by rerouting continental runoff from the Mississippi River drainage to the Hudson or St. Lawrence Rivers. We found that periods of increased freshwater flow to the North Atlantic occurred at the same time as reductions in the formation of North Atlantic Deep Water, thus providing a mechanism for observed climate variability that may be generally characteristic of times of intermediate global ice volume. |
format |
Article in Journal/Newspaper |
author |
Clark, Peter U. Marshall, Shawn J. Clarke, Garry K. C. Hostetler, Steven W. Licciardi, Joseph M. Teller, James T. |
spellingShingle |
Clark, Peter U. Marshall, Shawn J. Clarke, Garry K. C. Hostetler, Steven W. Licciardi, Joseph M. Teller, James T. Freshwater Forcing of Abrupt Climate Change During the Last Glaciation |
author_facet |
Clark, Peter U. Marshall, Shawn J. Clarke, Garry K. C. Hostetler, Steven W. Licciardi, Joseph M. Teller, James T. |
author_sort |
Clark, Peter U. |
title |
Freshwater Forcing of Abrupt Climate Change During the Last Glaciation |
title_short |
Freshwater Forcing of Abrupt Climate Change During the Last Glaciation |
title_full |
Freshwater Forcing of Abrupt Climate Change During the Last Glaciation |
title_fullStr |
Freshwater Forcing of Abrupt Climate Change During the Last Glaciation |
title_full_unstemmed |
Freshwater Forcing of Abrupt Climate Change During the Last Glaciation |
title_sort |
freshwater forcing of abrupt climate change during the last glaciation |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1126/science.1062517 https://www.science.org/doi/pdf/10.1126/science.1062517 |
genre |
Ice Sheet North Atlantic Deep Water North Atlantic |
genre_facet |
Ice Sheet North Atlantic Deep Water North Atlantic |
op_source |
Science volume 293, issue 5528, page 283-287 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1062517 |
container_title |
Science |
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293 |
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5528 |
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283 |
op_container_end_page |
287 |
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1810449939064422400 |