publication . Article . 2018

Closure of the Bering Strait caused Mid-Pleistocene Transition cooling

Kender, Sev; Ravelo, Ana Christina; Worne, Savannah; Swann, George E. A.; Leng, Melanie J.; Asahi, Hirofumi; Becker, Julia; Detlef, Henrieka; Aiello, Ivano W.; Andreasen, Dyke; ...
Open Access English
  • Published: 01 Dec 2018 Journal: volume 9issn: 2041-1723, eissn: 2041-1723, Copyright policy
  • Publisher: Springer
Abstract
The Mid-Pleistocene Transition (MPT) is characterised by cooling and lengthening glacial cycles from 600–1200 ka, thought to be driven by reductions in glacial CO2 in particular from ~900 ka onwards. Reduced high latitude upwelling, a process that retains CO2 within the deep ocean over glacials, could have aided drawdown but has so far not been constrained in either hemisphere over the MPT. Here, we find that reduced nutrient upwelling in the Bering Sea, and North Pacific Intermediate Water expansion, coincided with the MPT and became more persistent at ~900 ka. We propose reduced upwelling was controlled by expanding sea ice and North Pacific Intermediate Water...
Subjects
free text keywords: Q, Science, Article
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publication . Article . 2018

Closure of the Bering Strait caused Mid-Pleistocene Transition cooling

Kender, Sev; Ravelo, Ana Christina; Worne, Savannah; Swann, George E. A.; Leng, Melanie J.; Asahi, Hirofumi; Becker, Julia; Detlef, Henrieka; Aiello, Ivano W.; Andreasen, Dyke; ...