Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago
Down the Drain A pervasive cooling event affected much of the Northern Hemisphere approximately 9300 years ago. This event was accompanied by changes in ocean circulation in the North Atlantic, forced presumably by a large injection of fresh water produced by melting of the Laurentide Ice Sheet, but...
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Online Access: | http://dx.doi.org/10.1126/science.1187860 https://www.science.org/doi/pdf/10.1126/science.1187860 |
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craaas:10.1126/science.1187860 2024-06-23T07:53:48+00:00 Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago Yu, Shi-Yong Colman, Steven M. Lowell, Thomas V. Milne, Glenn A. Fisher, Timothy G. Breckenridge, Andy Boyd, Matthew Teller, James T. 2010 http://dx.doi.org/10.1126/science.1187860 https://www.science.org/doi/pdf/10.1126/science.1187860 en eng American Association for the Advancement of Science (AAAS) Science volume 328, issue 5983, page 1262-1266 ISSN 0036-8075 1095-9203 journal-article 2010 craaas https://doi.org/10.1126/science.1187860 2024-06-13T04:01:24Z Down the Drain A pervasive cooling event affected much of the Northern Hemisphere approximately 9300 years ago. This event was accompanied by changes in ocean circulation in the North Atlantic, forced presumably by a large injection of fresh water produced by melting of the Laurentide Ice Sheet, but the source, magnitude, and routing of the meltwater remain unknown. Yu et al. (p. 1262 , published online 29 April) present evidence that the trigger for this cooling episode was an outburst flood from Lake Superior. Reconstructing lake-level changes in the Superior basin suggests that a rapid fall of lake level of about 45 meters occurred 9300 years ago, possibly due to the sudden failure of a drift dam. Rapid drainage through the North Bay–Ottawa River–St. Lawrence River valleys into the North Atlantic should have been sufficient to disturb ocean circulation in line with the geologic record. Article in Journal/Newspaper Ice Sheet North Atlantic AAAS Resource Center (American Association for the Advancement of Science) Lawrence River ENVELOPE(-115.002,-115.002,58.384,58.384) North Bay ENVELOPE(-37.690,-37.690,-54.040,-54.040) Science 328 5983 1262 1266 |
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Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
Down the Drain A pervasive cooling event affected much of the Northern Hemisphere approximately 9300 years ago. This event was accompanied by changes in ocean circulation in the North Atlantic, forced presumably by a large injection of fresh water produced by melting of the Laurentide Ice Sheet, but the source, magnitude, and routing of the meltwater remain unknown. Yu et al. (p. 1262 , published online 29 April) present evidence that the trigger for this cooling episode was an outburst flood from Lake Superior. Reconstructing lake-level changes in the Superior basin suggests that a rapid fall of lake level of about 45 meters occurred 9300 years ago, possibly due to the sudden failure of a drift dam. Rapid drainage through the North Bay–Ottawa River–St. Lawrence River valleys into the North Atlantic should have been sufficient to disturb ocean circulation in line with the geologic record. |
format |
Article in Journal/Newspaper |
author |
Yu, Shi-Yong Colman, Steven M. Lowell, Thomas V. Milne, Glenn A. Fisher, Timothy G. Breckenridge, Andy Boyd, Matthew Teller, James T. |
spellingShingle |
Yu, Shi-Yong Colman, Steven M. Lowell, Thomas V. Milne, Glenn A. Fisher, Timothy G. Breckenridge, Andy Boyd, Matthew Teller, James T. Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago |
author_facet |
Yu, Shi-Yong Colman, Steven M. Lowell, Thomas V. Milne, Glenn A. Fisher, Timothy G. Breckenridge, Andy Boyd, Matthew Teller, James T. |
author_sort |
Yu, Shi-Yong |
title |
Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago |
title_short |
Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago |
title_full |
Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago |
title_fullStr |
Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago |
title_full_unstemmed |
Freshwater Outburst from Lake Superior as a Trigger for the Cold Event 9300 Years Ago |
title_sort |
freshwater outburst from lake superior as a trigger for the cold event 9300 years ago |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1126/science.1187860 https://www.science.org/doi/pdf/10.1126/science.1187860 |
long_lat |
ENVELOPE(-115.002,-115.002,58.384,58.384) ENVELOPE(-37.690,-37.690,-54.040,-54.040) |
geographic |
Lawrence River North Bay |
geographic_facet |
Lawrence River North Bay |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_source |
Science volume 328, issue 5983, page 1262-1266 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1187860 |
container_title |
Science |
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328 |
container_issue |
5983 |
container_start_page |
1262 |
op_container_end_page |
1266 |
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1802645625659981824 |