Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3324612k&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 24, CiteID L24612
Physics
5
Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Paleoceanography (0473, 3344), Paleoceanography: Glacial, Paleoceanography: Interhemispheric Phasing, Paleoceanography: Sea Surface Temperature
Scientific paper
We reconstructed the surface hydrography of the South Equatorial Current in the western Indian Ocean for the last 65,000 years using a marine sediment core record. Results show that tropical Indian Ocean temperatures resemble temperatures from Antarctic ice cores with warm and cold fluctuations synchronous with the Antarctic Cold Reversal and the Antarctic warm events A1-A4. The most likely thermal link involves Subantarctic Mode Water (SAMW) which forms north of the subpolar frontal zone and spreads northward into the Indian Ocean. This subsurface water mass is the prime suspect because of a stronger temperature response in the thermocline (recorded by the foraminifer N. dutertrei) than in surface water (G. ruber).
Elderfield Henry
Kiefer Thorsten
McCave Nick I.
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