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SUMMARY:Fluid dynamics of marine ice sheets - Prof Grae Worster (DAMTP\, U
 niversity of Cambridge)
DTSTART:20200308T142000Z
DTEND:20200308T150000Z
UID:TALK140866@talks.cam.ac.uk
CONTACT:Trinity College Science Society
DESCRIPTION:Marine ice sheets flow on bedrock that is below sea level and 
 terminate in floating ice shelves.  Fluid dynamics controls the location o
 f the grounding line\, where the ice sheet detaches from the bed rock and 
 starts to float\, which in turn determines the rate at which grounded ice 
 is transported into the ocean and contributes to sea-level rise.  I will d
 escribe some simple laboratory experiments and associated mathematical mod
 els that capture the dynamics of marine ice sheets\, highlighting the role
  of the floating shelves in buttressing the grounded ice sheet.  I will al
 so describe a novel fluid-mechanical instability of shear-thinning\, radia
 lly extensional flows that may describe certain longitudinal fractures in 
 ice shelves.
LOCATION:Winstanley Lecture Hall\, Trinity College
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