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Ventilation of the Glacial deep Pacific Ocean

Broecker, Wallace, Barker, Stephen, Clark, Elizabeth, Hajdas, Irka, Bonani, Georges and Stott, Lowell 2004. Ventilation of the Glacial deep Pacific Ocean. Science 306 (5699) , pp. 1169-1172. 10.1126/science.1102293

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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 (14C) to carbon in the atmosphere and surface ocean during glacial time. Comparison of 14C ages for coexisting wood and planktic foraminifera from the same site suggests that the atmosphere to surface ocean 14C to C ratio difference was not substantially different from today's.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Earth and Ocean Sciences
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QE Geology
Publisher: American Association for the Advancement of Science
ISSN: 1095-9203
Last Modified: 04 Jun 2017 01:39
URI: http://orca.cf.ac.uk/id/eprint/1228

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