Spatial patterns of glacier motion during a high-velocity event: Haut Glacier d’Arolla, Switzerland
- 1 January 2001
- journal article
- Published by International Glaciological Society in Journal of Glaciology
- Vol. 47 (156) , 9-20
- https://doi.org/10.3189/172756501781832412
Abstract
The surface motion of Haut Glacier d’Arolla, Switzerland, was monitored at a high spatial and temporal resolution. Data are analyzed to calculate surface velocities, surface strain rates and the components of the glacier force budget before, during and after an early melt season speed-up or “spring event”. We investigate the extent to which variations in glacier motion can be attributed to hydrologically induced local forcing or to non-local forcing transmitted via horizontal stress gradients. Enhanced glacier motion is dependent on a change in the spatial distribution of areas of high drag across the glacier.Keywords
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