Article ID Journal Published Year Pages File Type
5755934 Palaeogeography, Palaeoclimatology, Palaeoecology 2017 13 Pages PDF
Abstract
The meridional and zonal gradients in sea-surface and subsurface ocean properties within the West Pacific Warm Pool reveal a pronounced change after 1.5 Ma, leading to a more southward position of the warm South Pacific Convergence Zone between ~ 1.35-0.9 Ma and ~ 0.75-0.5 Ma. Synchronous to the changes in the upper ocean, the deeper water masses experienced high amplitude variations in temperature, most prominently since ~ 1.5 Ma. This and the dynamically changing thermocline were most likely associated to the impact of southern-sourced mode waters, which might have developed coincidently with the emergence of the East Pacific Cold Tongue and high latitude sea-surface cooling.
Related Topics
Physical Sciences and Engineering Earth and Planetary Sciences Earth-Surface Processes
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