Evidence for a three-phase sequence during Heinrich Stadial 4 using a multiproxy approach based on Greenland ice core records

Glacial climate was characterised by two types of abrupt events. Greenland ice cores record Dansgaard–Oeschger events, marked by abrupt warming in-between cold, stadial phases. Six of these stadials appear related to major Heinrich events (HEs), identified from ice-rafted debris (IRD) and large excu...

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Bibliographic Details
Published in:Climate of the Past
Main Authors: Guillevic, M., Bazin, L., Landais, A., Stowasser, C., Masson-delmotte, V., Blunier, T., Eynaud, F., Falourd, S., Michel, E., Minster, B., Popp, T., Prie, F., Vinther, M.
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Gesellschaft Mbh 2014
Subjects:
Greenland
Dansgaard-Oeschger events
Greenland ice core
Greenland ice cores
ice core
Ice Sheet
North Atlantic
Online Access:https://archimer.ifremer.fr/doc/00293/40438/39539.pdf
https://archimer.ifremer.fr/doc/00293/40438/39540.zip
https://archimer.ifremer.fr/doc/00293/40438/71310.pdf
https://doi.org/10.5194/cp-10-2115-2014
https://archimer.ifremer.fr/doc/00293/40438/
Description
Summary:Glacial climate was characterised by two types of abrupt events. Greenland ice cores record Dansgaard–Oeschger events, marked by abrupt warming in-between cold, stadial phases. Six of these stadials appear related to major Heinrich events (HEs), identified from ice-rafted debris (IRD) and large excursions in carbon- and oxygen-stable isotopic ratios in North Atlantic deep sea sediments, documenting major ice sheet collapse events. This finding has led to the paradigm that glacial cold events are induced by the response of the Atlantic Meridional Overturning Circulation to such massive freshwater inputs, supported by sensitivity studies conducted with climate models of various complexities. These models also simulate synchronous Greenland temperature and lower-latitude hydrological changes.

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