We aim to use seismology to constrain the large scale crystallographic preferred orientation (CPO = crystal orientation fabric) across the Priestley Glacier shear margin and satellite data to model the strain history that has resulted in the CPO. We will compare these data to results of thermo-mechanical forward models to establish whether strain dependent flow laws make a critical difference in controlling the shear margin mechanics and to define other measurements needed to test ice flow laws more completely. This will be the second field season operating on the Priestley (Original application 2018 was for the David Glacier: site location changed for safety reasons).
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