DocumentCode :
327025
Title :
Analysis of glacier flow dynamics from preliminary RADARSAT InSAR data of the Antarctic Mapping Mission
Author :
Forster, Richard R. ; Jezek, Kenneth C. ; Soh, Hong Gyoo ; Gray, A. Laurence ; Matter, Karim E.
Author_Institution :
Byrd Polar Res. Center, Ohio State Univ., Columbus, OH, USA
Volume :
4
fYear :
1998
fDate :
6-10 Jul 1998
Firstpage :
2225
Abstract :
The entire continent of Antarctica was mapped at a 25 meter resolution with synthetic aperture radar (SAR) during the Radarsat Antarctic Mapping Project (RAMP) over a 30 day period in the fall of 1997 providing a static “snapshot” of the ice sheet. Since Radarsat-l has a 24-day orbit cycle, repeat-pass interferometric SAR (InSAR) data was also acquired. The extensive InSAR data will provide a view of ice sheet kinematics. The authors present the results of analysis of an InSAR pair for the Recovery Glacier, East Antarctica. Analysis of the Recovery Glacier data set has demonstrated the excellent quality of InSAR data available from the Radarsat Antarctic Mapping Mission and its application to glacier dynamics. Phase coherence is high over most this highly dynamic area even though the temporal baseline is 24 days. The coherence image enhances subtle ice sheet topography and indicates the location of shear margins and the grounding line. A radar line-of sight ice velocity map identified a large region of slow moving ice that drains the Shackelton Range. Longitudinal stain rates along a flow line within the main ice stream were calculated directly from the wrapped phase
Keywords :
glaciology; hydrological techniques; remote sensing by radar; spaceborne radar; synthetic aperture radar; AD 1997; Antarctica; InSAR; RADARSAT; RAMP; Radarsat Antarctic Mapping Project; Recovery Glacier; SAR; SAR interferometry; Shackelton Range; dynamics; glacier flow dynamics; glaciology; grounding line; hydrology; ice motion; ice stream; interferometric SAR; kinematics; measurement technique; phase coherence; polar ice sheet; radar remote sensing; repeat-pass; shear margin; spaceborne radar; synthetic aperture radar; Antarctica; Continents; Grounding; Ice; Kinematics; Radar imaging; Streaming media; Surfaces; Synthetic aperture radar; Synthetic aperture radar interferometry;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
Type :
conf
DOI :
10.1109/IGARSS.1998.703794
Filename :
703794
Link To Document :
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