Subglacial floods and the origin of low-relief ice-sheet lobes

Autor:	E. M. Shoemaker
Rok vydání:	1992
Předmět:	geography 010506 paleontology geography.geographical_feature_category 010504 meteorology & atmospheric sciences Ice sheet Geomorphology 01 natural sciences Geology 0105 earth and related environmental sciences Earth-Surface Processes
Zdroj:	Journal of Glaciology. 38:105-112
ISSN:	1727-5652 0022-1430
DOI:	10.3189/s0022143000009643
Popis:	The likely genesis of low-relief ice-sheet lobes is episodic subglacial floods which occur in the form of water sheets hundreds of kilometers wide. During the few weeks prior to termination, when the flood discharge is large, the average thickness of a water sheet beneath the Lake Michigan lobe likely exceeded 1 m and reached thicknesses in excess of 6 m. The release of a part of the basal shear stress during this period produced an elongation of the lobe of tens of kilometers.
Databáze:	OpenAIRE
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