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Physics of Subglacial Hydraulics: 1 of 6 Videos

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Uploaded by on Mar 2, 2010

Part 1 of 2 videos in a set of 6 videos providing an introduction to modeling of subglacial water flow. The presentation begins with a brief overview of 3 major types of drainage systems underneath glaciers. I then construct a quantitative model of predicting how pressure disturbances propagate, based upon a model appearing in Mark Fahnestock's 1991 Caltech doctoral thesis. I find the perturbation solution and show how this solution predicts that water pulses propagate at speeds of several hundred meters per hour, in agreement with geophysical observations. Next video is:
SubGlacialHydraulics-2of2.m4v

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Uploader Comments (Squatchmichael)

  • Clarification on 1 point: on the mass conservation slide, (1) Only the water volume going into the basal element should be positive; all other terms should have minus signs in front of them.

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