Mediterranean outflow conditions during the early to middle Pleistocene linked to precession forcing

Voelker, Antje; Salgueiro, Emilia; Henning, Kuhnert

http://hdl.handle.net/10400.1/14515

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Authors

Voelker, Antje

Salgueiro, Emilia

Henning, Kuhnert

Abstract(s)

The Mediterranean Outflow Water (MOW) is an important intermediate depth water mass in the North Atlantic. Here we reconstruct changes in the MOW during the early Pleistocene interval from 630 to 1760 ky, encompassing the Mid-Pleistocene Transition (MPT), which marks an important change in orbital climate forcing. Neither MOW ventilation nor MOW flow strength reveal changes related to the MPT, but incorporate variations related to precession (insolation) forcing. The MPT related change to higher glacial benthic δ O values occurs earlier at Site U1387 than in most deep-sea records, i.e. with MIS 26 instead of the MIS 24 to MIS 22 interval