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SUMMARY:The ablation of icebergs and ice shelves - Andrew Wells\, Institut
 e of Theoretical Geophysics\, DAMTP\, University of Cambridge
DTSTART:20071024T100000Z
DTEND:20071024T110000Z
UID:TALK8446@talks.cam.ac.uk
CONTACT:Deb Shoosmith
DESCRIPTION:The ablation rates of the submerged parts of icebergs and ice 
 shelves depend on the heat transfer from the neighbouring fluid. Buoyancy 
 driven flow can be generated when ice is in contact with water\, and this 
 flow modifies the heat transfer characteristics. Such flows are responsibl
 e for the generation of ice shelf water plumes. We consider a theoretical 
 model for buoyancy driven flow in the boundary layer next to a heated or c
 ooled surface. We predict changes in heat transfer as the flow develops do
 wnstream\, from laminar flow through two distinct turbulent flow regimes. 
 The final turbulent regime\, relevant to geophysical scale flows\, is then
  applied to provide a simple model of iceberg ablation in salty water.
LOCATION:British Antarctic Survey\, Room 330B
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