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Detailed Reference Information |
Moore, T.C., Rea, D.K., Lyle, M. and Liberty, L.M. (2002). Equatorial ocean circulation in an extremely warm climate. Paleoceanography 17: doi: 10.1029/2000PA000566. issn: 0883-8305. |
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The warm climates of the early Paleogene and the associated diminished near-surface winds should have resulted in a reduction in near-surface ocean circulation. One check on this deduction is the delineation of biogenic sediments associated with an equatorial current system of the early Eocene Pacific. A latitudinal seismic reflection transect across the tropical Pacific along early Paleogene ocean crust reveals a basal high-amplitude reflection package that we take to be the lower Eocene section. This unit varies in thickness by a factor of about two, with the thickest portion forming a low mound some 3¿--4¿ north of the 56 Ma paleoequator. This mound may represent the position of a divergence generated in the frontal region between two currents flowing in opposite directions, and its position suggests that the wind-driven equatorial circulation of the early Eocene was one without a pronounced equatorial divergence. |
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Abstract |
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Keywords
Oceanography, General, Paleoceanography, Marine Geology and Geophysics, Marine sediments--processes and transport |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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