Phase relationship between sea level and abrupt climate change

Sierro, F. J. and Andersen, N. and Bassetti, M. A. and Berné, S. and Canals, M. and Curtis, Jason H. and Dennielou, B. and Flores, J. A. and Frigola, J. and Gonzalez-Mora, Beatriz and Grimalt, J. O. and Hodell, David A. and Jouet, Gwenael and Schneider, R. (2009) Phase relationship between sea level and abrupt climate change. Quaternary Science Reviews, 28 (25-26). pp. 2867-2881. DOI

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Direct traces of past sea levels are based on the elevation of old coral reefs at times of sea level highstands. However, these measurements are discontinuous and cannot be easily correlated with climate records from ice cores. In this study we show a new approach to recognizing the imprint of sea level changes in continuous sediment records taken from the continental slope at locations that were continuously submerged, even during periods of sea level lowstand. By using a sediment core precisely synchronized with Greenland ice cores, we were able to recognize major floods of the Mediterranean continental shelf over the past 270 kyr. During the last glacial period five flooding events were observed at the onset of the warmest Greenland interstadials. Consistent correspondence between warm climate episodes and eustatic sea level rises shows that these global flooding events were generated by pronounced melting of the Northern Hemisphere ice sheets, due to rapid intensification of Atlantic Meridional Overturning Circulation.

Item Type: Article
Subjects: 01 - Climate Change and Earth-Ocean Atmosphere Systems
Divisions: 01 - Climate Change and Earth-Ocean Atmosphere Systems
Journal or Publication Title: Quaternary Science Reviews
Volume: 28
Page Range: pp. 2867-2881
Identification Number:
Depositing User: Sarah Humbert
Date Deposited: 14 Oct 2011 13:54
Last Modified: 23 Jul 2013 10:02

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