Four climate cycles of recurring deep and surface water destabilizations on the Iberian Margin

Martrat, B. and Grimalt, J. O. and Shackleton, N. J. and De Abreu, L. and Hutterli, M. A. and Stocker, T. F. (2007) Four climate cycles of recurring deep and surface water destabilizations on the Iberian Margin. Science, 317. pp. 502-507. DOI https://doi.org/10.1126/science.1139994

PDF shackletondeabreuscience2007.pdf Restricted to Registered users only Download (636kB)

Abstract

Centennial climate variability over the last ice age exhibits clear bipolar behavior. High-resolution analyses of marine sediment cores from the Iberian margin trace a number of associated changes simultaneously. Proxies of sea surface temperature and water mass distribution, as well as relative biomarker content, demonstrate that this typical north-south coupling was pervasive for the cold phases of climate during the past 420,000 years. Cold episodes after relatively warm and largely ice-free periods occurred when the predominance of deep water formation changed from northern to southern sources. These results reinforce the connection between rapid climate changes at Mediterranean latitudes and century-to-millennial variability in northern and southern polar regions.

Item Type:	Article
Uncontrolled Keywords:	IA54 2007 P
Subjects:	01 - Climate Change and Earth-Ocean Atmosphere Systems
Divisions:	01 - Climate Change and Earth-Ocean Atmosphere Systems
Journal or Publication Title:	Science
Volume:	317
Page Range:	pp. 502-507
Identification Number:	https://doi.org/10.1126/science.1139994
Depositing User:	Sarah Humbert
Date Deposited:	16 Feb 2009 13:03
Last Modified:	23 Jul 2013 10:07
URI:	http://eprints.esc.cam.ac.uk/id/eprint/516

Actions (login required)

View Item