CGRG Bibliography of Canadian Geomorphology
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Author : Flowers, G.E.; and Clarke, G.K.C.
Date : 2000.
Title : Implications of active ice margins for ice sheet drainage.
Publication : Annual Scientific Meeting, Canadian Geophysical Union, Banff, Alberta, May 23-27, 2000.
Issue : Abstract.
Page(s) :
Abstract
Geological remnants of continental glaciation attest to the dynamical nature of an ice sheet periphery. At the margin, water bursts forth in catastrophic oods, ice lobes surge forward, and the bed is sculpted by both glacial and uvial action. These important processes alter the landscape and justify special attention to the conditions under which they occur. All of these phenomena are linked to glacial hydrology. In contrast to an ice sheet interior, margins are subject to ablation which allows the possibility of rapidly evolving englacial and subglacial drainage networks. Using theoretical and numerical models, we examine the hydrology of ice sheet margins on annual and interannual time scales. While the geometry of an active margin affects large-scale drainage patterns in the subglacial system, variations in meltwater supply control its time-dependent morphological evolution. Hydrological changes that are eeting on the time scales of ice sheets may still have implications for their dynamics.
Bibliography of Canadian Geomorphology