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SUMMARY:Modelling the plumbing of ice sheets - Ian Hewitt (Oxford\, Mathem
 atical Institute)
DTSTART:20130225T130000Z
DTEND:20130225T140000Z
UID:TALK42756@talks.cam.ac.uk
CONTACT:Doris Allen
DESCRIPTION:One of the largest uncertainties in forecasts of the melting i
 ce caps is the role played by water at the base of the ice in lubricating 
 ice flow. Recent observations of the Greenland Ice Sheet have shown that s
 ummer meltwater penetrating from the ice surface substantially affects the
  rate at which the ice slides. Faster sliding would quicken the rate at wh
 ich ice is lost from the ice sheet\, but the observations to date are inco
 nclusive about the overall effect of the meltwater: some indicate that spe
 ed-up does indeed occur\, whilst others suggest more melting actually lead
 s to a slow-down of the ice.  I will discuss recent attempts to understand
  this behaviour using mathematical models.  
LOCATION:MR5\, Centre for Mathematical Sciences
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