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Science 25 August 2000:
Vol. 289. no. 5483, pp. 1321 - 1324
DOI: 10.1126/science.289.5483.1321
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Reports

Hydrological Impact of Heinrich Events in the Subtropical Northeast Atlantic

Edouard Bard,1* Frauke Rostek,1 Jean-Louis Turon,2 Sandra Gendreau2

Reconstructing the impact of Heinrich events outside the main belt of ice rafting is crucial to understanding the underlying causes of these abrupt climatic events. A high-resolution study of a marine sediment core from the Iberian margin demonstrates that this midlatitude area was strongly affected both by cooling and advection of low-salinity arctic water masses during the last three Heinrich events. These paleoclimatic time series reveal the internal complexity of each of the last three Heinrich events and illustrate the value of parallel studies of the organic and inorganic fractions of the sediments.

1 Centre Européen de Recherche et d'Enseignement en Géosciences de l'Environnement (CEREGE), UMR 6635, CNRS, and Université d'Aix-Marseille III, Europôle de l'Arbois, 13545 Aix-en-Provence cedex 4, France.
2 Département de Géologie et Océanographie (DGO), UMR EPOC 5805, CNRS and Université de Bordeaux I, Avenue des Facultés, 33405 Talence cedex, France.
*   To whom correspondence should be addressed. E-mail: bard{at}cerege.fr

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