Estimate the flow law parameter A from the ice speed profile of the Worthington Glacier in Figure 8.12b. Assume the local slope of the glacier at the borehole location to be 60 m/km, and that the ice obeys Glen’s flow law (n = 3). The borehole extends to the bed of the glacier.

Figure 8.12b

Transcribed Image Text:

(b) Depth (m) 50 100 150 200 Athabasca Glacier speed profile Horizontal Velocity (m/yr) 10 basal motion 20 internal deformation bedrock 30 0 0 0 0 0 0 0