Articles | Volume 10, issue 1
The Cryosphere, 10, 385–399, 2016
https://doi.org/10.5194/tc-10-385-2016
The Cryosphere, 10, 385–399, 2016
https://doi.org/10.5194/tc-10-385-2016
Research article
16 Feb 2016
Research article | 16 Feb 2016

Tremor during ice-stream stick slip

B. P. Lipovsky and E. M. Dunham

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Short summary
Small repeating earthquakes occur at the ice-bed interface of the Whillans Ice Stream, West Antarctica. The earthquakes occur as rapidly as 20 earthquakes/s. We conduct numerical simulations of these earthquakes that include elastic and frictional forces as well as seismic wave propagation. We create synthetic seismograms and compare these synthetics to observed seismograms in order to constrain subglacial parameters. We comment on decadal-scale changes in these parameters.