Surface and deep ocean interactions during the cold climate event 8,200 years ago

Ellison, Christopher R. W., Chapman, Mark R. and Hall, Ian Robert ORCID: https://orcid.org/0000-0001-6960-1419 2006. Surface and deep ocean interactions during the cold climate event 8,200 years ago. Science 312 (5782) , pp. 1929-1932. 10.1126/science.1127213

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Abstract

Evidence from a North Atlantic deep-sea sediment core reveals that the largest climatic perturbation in our present interglacial, the 8200-year event, is marked by two distinct cooling events in the subpolar North Atlantic at 8490 and 8290 years ago. An associated reduction in deep flow speed provides evidence of a significant change to a major downwelling limb of the Atlantic meridional overturning circulation. The existence of a distinct surface freshening signal during these events strongly suggests that the sequenced surface and deep ocean changes were forced by pulsed meltwater outbursts from a multistep final drainage of the proglacial lakes associated with the decaying Laurentide Ice Sheet margin.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	Q Science > QE Geology
Publisher:	American Association for the Advancement of Science
ISSN:	00368075
Last Modified:	17 Oct 2022 08:52
URI:	https://orca.cardiff.ac.uk/id/eprint/1290

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