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Description:A three-dimensional, time-dependent flow model for glaciers has been developed and applied to the Taku Glacier, southeast Alaska. the model is calibrated by adjusting the friction coefficient and viscosity to reproduce (1) surface velocities, (2) relative values of bed sliding, and (3) the rate of rise of the glacier surface. The model is then used to simulate the flow characteristics of the Taku Glacier, over a period of 500 years. The glacier terminus continues advancing, for the present climatic conditions, in the next 300 years with an average rate of 20m/year, and it completely blocks the Taku Inlet. When climatic warming of 2.5 deg C per hundred years is assumed, the advance of the Taku Glacier is arrested in about 50 years and it starts retreating in about 100 years. Thus under the current global warming scenarios, the Taku Glacier will not block the Taku Inlet.
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Sea Grant Document Number:MEU-T-89-001
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Rights Information:Public Domain
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