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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.
Author(s): Marlow JR, Lange CB, Wefer G, Rosell-Mele A
Publication type: Article
Publication status: Published
ISSN (print): 0036-8075
ISSN (electronic): 1095-9203
Publisher: American Association for the Advancement of Science
PubMed id: 11125138
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