Climate of the Past
Climate of the Past
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Articles | Volume 11, issue 4
Articles | Volume 11, issue 4
https://doi.org/10.5194/cp-11-687-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cp-11-687-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 11, issue 4
Research article
 | 
21 Apr 2015
Research article |  | 21 Apr 2015

Subsurface North Atlantic warming as a trigger of rapid cooling events: evidence from the early Pleistocene (MIS 31–19)

I. Hernández-Almeida, F.-J. Sierro, I. Cacho, and J.-A. Flores

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Short summary
This manuscript presents new Mg/Ca and previously published δ18O measurements of Neogloboquadrina pachyderma sinistral for MIS 31-19, from a sediment core from the subpolar North Atlantic. The mechanism proposed here involves northward subsurface transport of warm and salty subtropical waters during periods of weaker AMOC, leading to ice-sheet instability and IRD discharge. This is the first time that these rapid climate oscillations are described for the early Pleistocene.
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