Fast-flowing outlet glaciers of the last glacial maximum Patagonian Icefield

Neil F. Glasser, Krister N. Jansson

Research output: Contribution to journalArticlepeer-review

52 Citations (SciVal)

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.
Original languageEnglish
Pages (from-to)206-211
Number of pages6
JournalQuaternary Research
Volume63
Issue number2
DOIs
Publication statusPublished - Mar 2005

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