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Large-scale instabilities of the Laurentide ice sheet simulated in a fully coupled climate-system model

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Title: Large-scale instabilities of the Laurentide ice sheet simulated in a fully coupled climate-system model
Authors: Calov, Reinhard Browse this author
Ganopolski, Andrey Browse this author
Petoukhov, Vladimir Browse this author
Claussen, Martin Browse this author
Greve, Ralf Browse this author →KAKEN DB
Keywords: Glaciology
Climate dynamics
Heinrich event
Issue Date: 27-Dec-2002
Publisher: American Geophysical Union
Journal Title: Geophysical Research Letters
Volume: 29
Issue: 24
Start Page: 2216
Publisher DOI: 10.1029/2002GL016078
Abstract: Heinrich events, related to large-scale surges of the Laurentide ice sheet, represent one of the most dramatic types of abrupt climate change occurring during the last glacial. Here, using a coupled atmosphere-ocean-biosphere-ice sheet model, we simulate quasi-periodic large-scale surges from the Laurentide ice sheet. The average time between simulated events is about 7,000 yrs, while the surging phase of each event lasts only several hundred years, with a total ice volume discharge corresponding to 5-10 m of sea level rise. In our model the simulated ice surges represent internal oscillations of the ice sheet. At the same time, our results suggest the possibility of a synchronization between instabilities of different ice sheets, as indicated in paleoclimate records.
Rights: An edited version of this paper was published by AGU. Copyright 2002 American Geophysical Union.
Type: article (author version)
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Greve Ralf

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