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SUMMARY:Applying adjoint methods to the glacial isostatic adjustment inver
 se problem - Dr David Al-Attar\, University of Cambridge
DTSTART:20140317T140000Z
DTEND:20140317T150000Z
UID:TALK51469@talks.cam.ac.uk
CONTACT:Rosie Williams
DESCRIPTION:In this talk I will start with a brief introduction to the phy
 sics of glacial isostatic adjustment (GIA)\, focusing on the deformation o
 f the solid Earth and how it can be modelled numerically. I will then desc
 ribe the associated inverse problem whose aim is to infer the past evoluti
 on of ice sheets from observations of GIA. One approach to solving the inv
 erse GIA problem is to use gradient-based optimization. Calculation of the
  required gradients can be computationally demanding\, but I will show how
  this can be done very efficiently through an application of the so-called
  adjoint method.  Finally\, I will outline some future research plans whic
 h aim to incorporate ice-dynamics more fully into the GIA forward and inve
 rse problems.
LOCATION:British Antarctic Survey\, Room 187
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