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TSX INSAR ASSESSMENT FOR SLOPE INSTABILITIES MONITORING IN ALPINE PERIGLACIAL ENVIRONMENT (WESTERN SWISS ALPS, SWITZERLAND) (2011)

The potential of Terrasar-X (TSX) InSAR for the acquisition of high resolution X-band interferograms with an 11 day time interval has been investigated for the monitoring of creeping landforms in the alpine periglacial belt. In order to give a reliable assessment of InSAR visibility, an index characterizing the velocity compression is calculated for 30 surveyed landforms like rockglaciers, landslides and debris covered glaciers. Results show that the monitoring of some very active rockglaciers (1-3.5m/y) may be possible when the latter are not hidden by layover or shadow. Moreover, compared to lower resolution data, TSX is well suitable\ to monitor active landforms. Even if field measurements are, in most cases, still needed to validate and confirm observations at local scale, TSX InSAR appears to be an efficient remote sensing method to monitor slope instabilities in this environment. 

Reference:
Proc. ‘Fringe 2011 Workshop’, Frascati, Italy, 19–23 September 2011 (ESA SP-697, January 2012)
Organization:
Dept. of Geosciences, Geography, Univ. of Fribourg, 1700 Fribourg, Switzerland
Switzerland
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