Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10501350 | Quaternary Research | 2005 | 6 Pages |
Abstract
Glacial geomorphology around the Northern Patagonian Icefield indicates that a number of fast-flowing outlet glaciers (the continuation of ice streams further upglacier) drained the icefield during the Last Glacial Maximum. These topographically controlled fast-flowing glaciers may have dictated the overall pattern of Last Glacial Maximum ice discharge, lowered the ice-surface profile, and forced the ice-divide westward. The influence of the fast-flowing outlet glaciers on icefield behavior also helps to explain why the configuration of the Patagonian Icefield at the Last Glacial Maximum is not accurately represented in existing numerical ice-sheet models. Fast-flowing outlet glaciers would have strongly influenced ice discharge patterns and therefore partially decoupled the icefield from climatically induced changes in thickness and extent.
Keywords
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Physical Sciences and Engineering
Earth and Planetary Sciences
Geology
Authors
Neil F. Glasser, Krister N. Jansson,