Surface Velocity Mapping of Lambert Glacier-Amery Ice Shelf System Using Feature-Tracking

Beginning the 1970s, remote sensing has been used to investigate glacier flow in the Lambert Glacier-Amery Ice Shelf System (LGAISS). In the late 1980s, measurements of surface velocities in the LGAISS were made using a variety of techniques including field-based GPS and InSAR and SAR feature tracking techniques. This research adds to our existing knowledge of the LGAISS velocity field by applying feature tracking techniques to multiple-repeat Landsat images acquired for the time period of 2000-2002. These measurements complement existing SAR-based velocity maps made during the early 2000s. Comparisons between the Landsat- and SAR-derived velocity fields for the LGAISS indicate both similar in magnitudes and flow directions. Comparisons between the observed velocities where multiple Landsat pairs exist measurements occur show similar agreement. Applying this technique for deriving surface velocity fields for other time periods fromLandsat is currently underway.