Open image in new windowMulti-sensor a Priori PSI Visibility Map for Nationwide Landslide Detection in Austria

Conference paper

Abstract

This paper proposes a multi-sensor a priori PSI visibility map for Austria in order to evaluate the feasibility of Differential SAR Interferometric (DInSAR) applications for landslide-affected slopes. For this purpose, the range index RI, introduced for the determination of areas in layover and foreshortening on both ascending and descending acquisition geometries, is computed and applied to the most diffuse X-C-L band SAR sensors. A new method is introduced to improve the accuracy of those products by fusing CORINE data with sharper European JRC forest map and Imperviousness Copernicus map. The results are tested with six different available PSI datasets over Austria. Then, a priori visibility map and a PSI density map are also derived for seven different satellites by combining the RI index and an enhanced CORINE land cover map. Finally, PSI velocity values, along the Line of Sight (VLos) and projected along the steepest slope direction (VSlope), are used in order to produce a landslide velocity map for the Austrian region of Vorarlberg.

Keywords

Landslides A priori PSI visibility map Copernicus services Natural hazard PSI 

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Filippo Vecchiotti
    • 1
  • Dario Peduto
    • 2
  • Tazio Strozzi
    • 3
  1. 1.Department of Geology EngineeringGeological Survey of AustriaViennaAustria
  2. 2.Department of Civil EngineeringUniversity of SalernoFiscianoItaly
  3. 3.GAMMA Remote SensingGümligenSwitzerland

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