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Upwelling intensification as part of the Pliocene-Pleistocene climate transition

Lookup NU author(s): Dr Antoni Rosell-Mele


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A deep-sea sediment core underlying the Benguela upwelling system off south-west Africa provides a continuous time series of sea surface temperature (SST) for the past 4.5 million years. Our results indicate that temperatures in the region have declined by about 10°C since 3.2 million years ago. Records of paleoproductivity suggest that this cooling was associated with an increase in wind-driven upwelling tied to a shift from relatively stable global warmth during the mid-Pliocene to the high-amplitude glacial-interglacial cycles of the late Quaternary. These observations imply that Atlantic Ocean surface water circulation was radically different during the mid-Pliocene.

Publication metadata

Author(s): Marlow JR, Lange CB, Wefer G, Rosell-Mele A

Publication type: Article

Publication status: Published

Journal: Science

Year: 2000

Volume: 290

Issue: 5500

Pages: 2288-2291

ISSN (print): 0036-8075

ISSN (electronic): 1095-9203

Publisher: American Association for the Advancement of Science


DOI: 10.1126/science.290.5500.2288

PubMed id: 11125138


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