Ventilation of the Glacial Deep Pacific Ocean
- 12 November 2004
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 306 (5699) , 1169-1172
- https://doi.org/10.1126/science.1102293
Abstract
Measurements of the age difference between coexisting benthic and planktic foraminifera from western equatorial Pacific deep-sea cores suggest that during peak glacial time the radiocarbon age of water at 2-kilometers depth was no greater than that of today. These results make unlikely suggestions that a slowdown in deep-ocean ventilation was responsible for a sizable fraction of the increase of the ratio of carbon-14 ( 14 C) to carbon in the atmosphere and surface ocean during glacial time. Comparison of 14 C ages for coexisting wood and planktic foraminifera from the same site suggests that the atmosphere to surface ocean 14 C to C ratio difference was not substantially different from today's.Keywords
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