Download presentation

Presentation is loading. Please wait.

Published byHassan Bidwell Modified over 2 years ago

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

3
Raw DINSAR

4
Theoretical Cross Section of a Glacier Surface in a DINSAR before and after Unwrapping

5
Calculation of Glacier Velocities

6
Raw DINSAR

7
Median Filtered DINSAR

8
Gradient Filtered DINSAR

9
Thresholded DINSAR

10
Vectorized DINSAR

11
Displacement towards the Satellite

12
Calculation of glacier velocities from DINSAR V glac = U / (cos(h)cos( )sin( )+cos( )sin(h))

13
Velocity Field of Isachsenfonna

14
Velocity Field of Akademikerbreen

15
Velocity Field of Nordbreen

Similar presentations

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google