SEDIS - Publications
Russon, T. et al. (2010): Inter-hemispheric asymmetry in the early Pleistocene Pacific warm pool
ODP 184 1147
ODP 138 846
University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom
Universite de Bordeaux, France
Australian National University, Australia
De Deckker, P.
Inter-hemispheric asymmetry in the early Pleistocene Pacific warm pool
Geophysical Research Letters
American Geophysical Union, Washington, DC, United States
The position of the southern boundary of the Pacific warm pool is shown to have been stable since the early Pleistocene, based upon a planktic foraminiferal Mg/Ca-derived reconstruction of subtropical sea surface temperature in the Coral Sea. This contrasts with previous reconstructions showing warm pool contraction from the north and east and means that the early Pleistocene warm pool was more hemispherically asymmetric than its present configuration. The latter was not established until approximately 1Ma, supporting a strengthening of the northern Hadley Cell, which was not replicated in its southern counterpart, prior to the Mid-Pleistocene Transition.
Quaternary geology; alkaline earth metals; calcium; Cenozoic; Coral Sea; cores; correlation; East Pacific; Equatorial Pacific; Foraminifera; Hadley Cell; Invertebrata; isotope ratios; isotopes; Leg 138; Leg 184; lower Pleistocene; magnesium; metals; Mg/Ca; microfossils; North Pacific; Northwest Pacific; O-18/O-16; Ocean Drilling Program; ODP Site 1147; ODP Site 846; oxygen; Pacific Ocean; Pacific warm pool; paleo-oceanography; paleocurrents; paleotemperature; planktonic taxa; Pleistocene; Protista; Quaternary; sea-surface temperature; South China Sea; South Pacific; Southeast Pacific; Southwest Pacific; stable isotopes; West Pacific;
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