CGRG Bibliography of Canadian Geomorphology
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Author : Clarke, M.
Date : 1998
Title : Modeling Laurentide Ice Sheet Drainage
Publication : Annual Meeting of the American Association of Geographers, Boston, Mass. Poster Abstract.
Issue :
Page(s) :



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Abstract

Uncertainties about the origin of the saw-toothed waves visible in the ice core record of the last half million years have produced questions about the timing and nature of the collapse of the Laurentide Ice Sheet which covered a significant portion of North America during the Last Glacial Maximum. Based on the behavior of the Greenland and Antarctic Ice Sheets today, it is inferred that the ice did not leave the ice sheet evenly over all edges, but rather, would have collected in concentration areas, presumably in the nature of ice streams and flow into a few well defined areas for calving. In this study, we apply a three-dimensional ice dynamics model to a delimitable sector of the ice sheet. This ice dynamics model takes into account all stress tensor components, allowing it to simulate the convergence of ice streams. The region of study begins at the dome centered over present Hudson Bay flowing into a sector roughly defined by center of the Labrador Plateau and the northern tip of Baffin Island. The diagnostics in the model allow for estimation of the likelihood on maximum flow in the region.

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Bibliography of Canadian Geomorphology