1. GLACIER FLOW AND TOPOGRAPHY MEASUREMENTS WITH TERRASAR-X AND TANDEM-X M. Eineder 1 ) , W. Abdel Jaber 2) , D. Floricioiu 1) , H. Rott 3) , N. Yague-Martinez 1) 1) German Aerospace Center, 2) Technische Universität München, 3) Universität Innsbruck IGARSS 2011

2. Drygalski Glacier, Antarctica From: Rott et al. EUSAR 2008

3. Drygalski Glacier after Collapse of Larsen A Photo: H. Rott

4. TerraSAR-X and TanDEM-X Observations Preliminary TanDEM-X DEMs TS-X 11 day intervall series TS-X 3 repetitions 11 day intervall Stripmap mode, nominal resolution < 3 m

9. Average Three-Year Velocity Map 0.0 6.0 [m/d] 5 km A C

10. Temporal Velocity Profile at Point A (Terminus) Linear fit 2007-2010: -0.166 md -1 a -1 Linear fit 2007/2008: -0.336 md -1 a -1 Summer Winter Summer Winter Summer Winter  Significant seasonal variations and decelleration

11. Temporal Velocity Profile at Point C Summer Winter Summer Winter Summer Winter  Measurements confirm error margin (residuals stdev. < 2 cm d -1 )  slight seasonal variations, maybe decelleration

12. One-Year Deceleration Map A C -0.4 0.4 [md -1 a -1 ]

13. Three-Year Deceleration Map A C -0.4 0.4 [md -1 a -1 ]

14. Average Spatial Correlation Coefficient 0.0 0.7

16. Shaded DEM and 20 m Contour Lines Terminus

17. Drygalski Glacier Terminus Height Profile (Small Baseline DEM) 70 m  ~460 m

18. Difference TanDEM-X (asc) – GLOBE DEM 300 m -300 m 0 m  1. Height loss (?), 2. Velocity and geocoding errors