Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29x..67m&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 24, pp. 67-1, CiteID 2214, DOI 10.1029/2002GL015192
Physics
24
Global Change: Climate Dynamics (3309), Hydrology: Glaciology (1863), Meteorology And Atmospheric Dynamics: Paleoclimatology
Scientific paper
We simulate three-dimensional ice temperature fields to examine spatial-temporal history of the subglacial thermal environment during the last glacial cycle. Model results suggest that 60-80% of the Laurentide Ice Sheet was cold-based (frozen to the bed) at the LGM, and therefore unable to undergo large-scale basal flow. The fraction of warm-based ice increases significantly through the ensuing deglaciation, with only 10-20% of the Laurentide Ice Sheet frozen to the bed by 8 kyr BP. This basal thermal evolution, a function of both climatic and ice sheet history, could enable a dynamical switch to widespread basal flow through the deglacial period. Because basal flow has the capacity to evacuate large amounts of ice from the interior of continental ice sheets, creating thin and climatically-vulnerable ice masses, this switch in flow regime may have played a significant role in glacial terminations and the 100-kyr glacial cycle.
Clark Peter U.
Marshall Shawn J.
No associations
LandOfFree
Basal temperature evolution of North American ice sheets and implications for the 100-kyr cycle does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Basal temperature evolution of North American ice sheets and implications for the 100-kyr cycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Basal temperature evolution of North American ice sheets and implications for the 100-kyr cycle will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-965320