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Subglacial water flow inferred from stream measurements at South Cascade Glacier, Washington, USA

Journal of Glaciology

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Abstract

Comparisons of water discharge and cation load in each of the two main streams indicate that subglacial hydraulic processes differ between drainage basins. One stream drains from a conduit that is isolated in its lower reach from the surrounding subglacial region and receives water routed englacially from the surface. The upper reach of the conduit also receives water rounted englacially from the surface as well as from a distributed subglacial flow system. The other main stream drains from a conduit coupled to a debris layer beneath the glacier. Observations of the layer in natural ice tunnels indicate that the water may flow within a thin layer of debris. A one-dimensional model of flow through the debris layer can explain both the base-flow and diurnal variations of the second main stream. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Subglacial water flow inferred from stream measurements at South Cascade Glacier, Washington, USA
Series title:
Journal of Glaciology
Volume
38
Issue:
128
Year Published:
1992
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Glaciology
First page:
51
Last page:
64