Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29x..69c&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 24, pp. 69-1, CiteID 2216, DOI 10.1029/2002GL016078
Physics
21
Hydrology: Glaciology (1863), Global Change: Climate Dynamics (3309), Meteorology And Atmospheric Dynamics: Paleoclimatology, Planetary Sciences: Glaciation
Scientific paper
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.
Calov Reinhard
Claussen Martin
Ganopolski Andrey
Greve Ralf
Petoukhov Vladimir
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