Articles | Volume 12, issue 8
Research article
13 Aug 2018
Research article |  | 13 Aug 2018

The role of subtemperate slip in thermally driven ice stream margin migration

Marianne Haseloff, Christian Schoof, and Olivier Gagliardini

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Cited articles

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Bamber, J. L., Vaughan, D. G., and Joughin, I.: Widespread Complex Flow in the Interior of the Antarctic Ice Sheet, Science, 287, 1248–1250,, 2000.
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Short summary
The widths of the Siple Coast ice streams evolve on decadal to centennial timescales. We investigate how the rate of thermally driven ice stream widening depends on heat dissipation in the ice stream margin and at the bed, and on the inflow of cold ice from the ice ridge. As determining the migration rate requires resolving heat transfer processes on very small scales, we derive a parametrization of the migration rate in terms of parameters that are available from large-scale model outputs.