Ice-shelf buttressing

BeWiseGPS
GPS Flow Velocities collected during the Be:Wise project. Image: S. Berger

The Roi Baudoin Ice Shelf is buttressed by two ice rises and one small pinning-point at the ice-shelf front. During Be:Wise  ( InBev-Baillet Latour Antarctica Fellwship) we have measured GPS surface velocities in order to calibrate satellite-flow fields. The strain rates below illustrates how important such small pinning points can be in defining the ice-shelf flow field on a large scale.

Horizontal shear strain rates as seen by ERS (left) and Alos-PalSAR (right). Image: S. Berger
Horizontal shear strain rates as seen by ERS (left) and Alos-PalSAR (right). Image: S. Berger