WebFeb 1, 1995 · In conventional glacier sliding theories, normal traction at perfectly lubricated bed obstacles controls basal sliding by enhanced viscous creep and melt-refreeze cycles … WebJan 6, 1995 · Abstract. Subhourly measurements of bed deformation, bed shear strength, subglacial water pressure, and surface speed at Storglaciären, a glacier in northern Sweden, showed that the shear-strain rates of the bed decrease during periods of high …
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WebGale OneFile includes Flow mechanism of glaciers on soft beds by Neal R. Iverson, Brian Hanson, Roger Le. Click to explore. WebSep 22, 2024 · Although many convincing, diverse, and sometimes competing models of glacier surging have been proposed, the observed behavior of surging glaciers does not fit into distinct categories, and suggests the presence of a universal mechanism driving all surges. On the one hand, recent simulations of oscillatory flow behavior through the … razor blades officemax
(PDF) A REVIEW OF SURGE-TYPE GLACIERS - ResearchGate
WebSep 8, 2024 · Glaciers may move over such a substrate by two processes: decoupling of ice from the sediment bed and by shearing of the bed at depth. Decoupling involves both sliding of ice past clasts that protrude from the bed into the glacier sole and plowing of such clasts through the bed surface (e.g. Reference Brown, Hallet and Booth Brown and … WebJansson, P., 1995, Flow mechanism of gla-ciers ... We argue our results are typical of soft bedded glaciers with low englacial water content, and suggest this type of glacier can rapidly respond ... WebMar 1, 2024 · In nature, glacier beds are not smooth over wide areas, but have irregularities at different scales. The resistance to glacier movement around and above obstacles is termed form drag, which is an important factor controlling the rate of sliding. Two mechanisms of glacier movement over obstacles are regelation sliding and enhanced … razor blades new zealand