Enhanced circulation during a warm period

作者: Ana Christina Ravelo , Dyke H. Andreasen

DOI: 10.1029/1999GL007000

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摘要: The Early Pliocene is the most recent interval in which equilibrium oceanic conditions can be studied context of global warmth relative to today. To characterize thermohaline circulation during this warm period (4.4-3.1 Ma) we combined new benthic foraminiferal isotopic data from southeast Atlantic with published data, and reconstructed Pacific Ocean nutrient distributions. indicate enhanced ventilation deep intermediate Pliocene. Enhanced implies that delivery surface water high latitudes western boundary currents North subtropical gyres was probably also enhanced. Future modeling needs reconcile reduced meridional temperature gradients gyre circulation.

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