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Large-scale instabilities of the Laurentide ice sheet simulated in a fully coupled climate-system model
| 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 | | Paleoclimatology | | Heinrich event | | Surge |
| 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) |
| URI: | http://hdl.handle.net/2115/34653 |
| 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)
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Submitter: Greve Ralf
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