Quaternary Deepwater Paleoceanography
During the past decade, geochemical paleoceanographers have begun to explore the changes in the circulation of the deep ocean that occurred during the glacial-interglacial cycles of the earth's recent history. The deep ocean was significantly colder during the glacial maximum. The distributions...
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American Association for the Advancement of Science (AAAS)
1990
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Online Access: | http://dx.doi.org/10.1126/science.249.4971.863 https://www.science.org/doi/pdf/10.1126/science.249.4971.863 |
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craaas:10.1126/science.249.4971.863 2024-09-15T18:21:45+00:00 Quaternary Deepwater Paleoceanography Boyle, Edward A. 1990 http://dx.doi.org/10.1126/science.249.4971.863 https://www.science.org/doi/pdf/10.1126/science.249.4971.863 en eng American Association for the Advancement of Science (AAAS) Science volume 249, issue 4971, page 863-870 ISSN 0036-8075 1095-9203 journal-article 1990 craaas https://doi.org/10.1126/science.249.4971.863 2024-07-04T04:00:29Z During the past decade, geochemical paleoceanographers have begun to explore the changes in the circulation of the deep ocean that occurred during the glacial-interglacial cycles of the earth's recent history. The deep ocean was significantly colder during the glacial maximum. The distributions of biologically utilized elements (such as carbon and phosphorus) were significantly different as well; higher concentrations of these elements occurred in the deep (>2500 meters depth) North Atlantic, and lower concentrations occurred in the upper (<2500 meters depth) waters of the North Atlantic and possibly in all of the major ocean basins. In contrast, relatively subtle changes have been observed in the radiocarbon ages of deep waters. Slow deepwater changes are statistically linked to variations in the earth's orbit, but rapid changes in deepwater circulation also have occurred. Deepwater chemistry and circulation changes may control the variability in atmospheric CO 2 levels that have been documented from studies of air bubbles in polar ice cores. Article in Journal/Newspaper North Atlantic AAAS Resource Center (American Association for the Advancement of Science) Science 249 4971 863 870 |
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AAAS Resource Center (American Association for the Advancement of Science) |
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English |
description |
During the past decade, geochemical paleoceanographers have begun to explore the changes in the circulation of the deep ocean that occurred during the glacial-interglacial cycles of the earth's recent history. The deep ocean was significantly colder during the glacial maximum. The distributions of biologically utilized elements (such as carbon and phosphorus) were significantly different as well; higher concentrations of these elements occurred in the deep (>2500 meters depth) North Atlantic, and lower concentrations occurred in the upper (<2500 meters depth) waters of the North Atlantic and possibly in all of the major ocean basins. In contrast, relatively subtle changes have been observed in the radiocarbon ages of deep waters. Slow deepwater changes are statistically linked to variations in the earth's orbit, but rapid changes in deepwater circulation also have occurred. Deepwater chemistry and circulation changes may control the variability in atmospheric CO 2 levels that have been documented from studies of air bubbles in polar ice cores. |
format |
Article in Journal/Newspaper |
author |
Boyle, Edward A. |
spellingShingle |
Boyle, Edward A. Quaternary Deepwater Paleoceanography |
author_facet |
Boyle, Edward A. |
author_sort |
Boyle, Edward A. |
title |
Quaternary Deepwater Paleoceanography |
title_short |
Quaternary Deepwater Paleoceanography |
title_full |
Quaternary Deepwater Paleoceanography |
title_fullStr |
Quaternary Deepwater Paleoceanography |
title_full_unstemmed |
Quaternary Deepwater Paleoceanography |
title_sort |
quaternary deepwater paleoceanography |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1990 |
url |
http://dx.doi.org/10.1126/science.249.4971.863 https://www.science.org/doi/pdf/10.1126/science.249.4971.863 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Science volume 249, issue 4971, page 863-870 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.249.4971.863 |
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Science |
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249 |
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4971 |
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863 |
op_container_end_page |
870 |
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1810460673514143744 |