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Deepwater formation in the North Pacific during the last glacial termination
Okazaki, Y.; Timmermann, A.; Menviel, L.; Harada, N.; Abe-Ouchi, A.; Chikamoto, M.O.; Mouchet, A.; Asahi, H. (2010). Deepwater formation in the North Pacific during the last glacial termination. Science (Wash.) 329(5988): 200-204. dx.doi.org/10.1126/science.1190612
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Okazaki, Y.
  • Timmermann, A.
  • Menviel, L.
  • Harada, N.
  • Abe-Ouchi, A.
  • Chikamoto, M.O.
  • Mouchet, A., more
  • Asahi, H.

Abstract
    Between ~17,500 and 15,000 years ago, the Atlantic meridional overturning circulation weakened substantially in response to meltwater discharges from disintegrating Northern Hemispheric glacial ice sheets. The global effects of this reorganization of poleward heat flow in the North Atlantic extended to Antarctica and the North Pacific. Here we present evidence from North Pacific paleo surface proxy data, a compilation of marine radiocarbon age ventilation records, and global climate model simulations to suggest that during the early stages of the Last Glacial Termination, deep water extending to a depth of ~2500 to 3000 meters was formed in the North Pacific. A switch of deepwater formation between the North Atlantic and the North Pacific played a key role in regulating poleward oceanic heat transport during the Last Glacial Termination.

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