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Mapping Glacier Velocities at Spitsbergen Using ERS Tandem SAR Data

Mapping Glacier Velocities at Spitsbergen Using ERS Tandem SAR Data. Bjørn Wangensteen*, Dan Johan Weydahl**, Jon Ove Hagen* *Department of Physical Geography, University of Oslo, PO Box 1042 Blindern, 0316 Oslo, Norway

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Mapping Glacier Velocities at Spitsbergen Using ERS Tandem SAR Data

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  1. Mapping Glacier Velocities at Spitsbergen Using ERS Tandem SAR Data Bjørn Wangensteen*, Dan Johan Weydahl**, Jon Ove Hagen* *Department of Physical Geography, University of Oslo, PO Box 1042 Blindern, 0316 Oslo, Norway **Norwegian Defence Research Establishment, Division of Electronics, PO Box 25, 2007 Kjeller, Norway E-mail: bjorn.wangensteen@geografi.uio.no

  2. Raw DINSAR

  3. Theoretical Cross Section of a Glacier Surface in a DINSAR before and after Unwrapping

  4. Calculation of Glacier Velocities

  5. Raw DINSAR

  6. Median Filtered DINSAR

  7. Gradient Filtered DINSAR

  8. Thresholded DINSAR

  9. Vectorized DINSAR

  10. Displacement towards the Satellite

  11. Calculation of glacier velocities from DINSAR Vglac = U / (cos(h)cos()sin()+cos()sin(h))

  12. Velocity Field of Isachsenfonna

  13. Velocity Field of Akademikerbreen

  14. Velocity Field of Nordbreen

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