Glacier surge mechanism: 1982-1983 surge of variegated glacier, alaska |
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Authors: | Kamb B Raymond C F Harrison W D Engelhardt H Echelmeyer K A Humphrey N Brugman M M Pfeffer T |
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Abstract: | The hundredfold speedup in glacier motion in a surge of the kind the kind that took place in Variegated Glacier in 1982-1983 is caused by the buildup of high water pressure in the basal passageway system, which is made possible by a fundamental and pervasive change in the geometry and water-transport characteristics of this system. The behavior of the glacier in surge has many remarkable features, which can provide clues to a detailed theory of the surging process. The surge mechanism is akin to a proposed mechanism of overthrust faulting. |
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