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The Azores Front since the Last Glacial Maximum

Rogerson, M., Rohling, E.J., Weaver, P.P.E. and Murray, J.W. (2004) The Azores Front since the Last Glacial Maximum Earth and Planetary Science Letters, 222, (3-4), pp. 779-789. (doi:10.1016/j.epsl.2004.03.039).

Record type: Article

Abstract

The spatial distribution of warm surface water in the Atlantic Ocean reflects the state of the thermohaline circulation. The Azores Current/Front, which is a recirculation of the Gulf Stream, marks the northeastern boundary of the North Atlantic subtropical gyre. Its position is therefore diagnostic of the width of the Atlantic warm water sphere. Here we report high resolution stable isotope and faunal abundance records of planktonic foraminifera in a sediment core from the Gulf of Cadiz (southwest Spain) which reflects shifting of the Azores Front since the Last Glacial Maximum (LGM). Today, the Azores Front does not penetrate into the Gulf of Cadiz, even though the front resides at the same latitude as the Gulf of Cadiz in the Atlantic. Our results indicate that the Azores Front is a robust feature of the Atlantic surface circulation, and that is present both in interglacial times and during the LGM at roughly the same latitude. However, during the LGM prior to 16 ka BP and during the Younger Dryas, the Azores Front did penetrate eastward into the Gulf of Cadiz.

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More information

Published date: 15 June 2004
Keywords: palaeoceanography, foraminifera, stable isotopes, azores front, last glacial maximum

Identifiers

Local EPrints ID: 9867
URI: http://eprints.soton.ac.uk/id/eprint/9867
ISSN: 0012-821X
PURE UUID: eaaefc5d-4871-41d9-8eee-e796d92a2486
ORCID for E.J. Rohling: ORCID iD orcid.org/0000-0001-5349-2158

Catalogue record

Date deposited: 14 Oct 2004
Last modified: 17 Jul 2017 17:08

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Contributors

Author: M. Rogerson
Author: E.J. Rohling ORCID iD
Author: P.P.E. Weaver
Author: J.W. Murray

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