Articles | Volume 20, issue 6
Nat. Hazards Earth Syst. Sci., 20, 1783–1803, 2020
https://doi.org/10.5194/nhess-20-1783-2020
Nat. Hazards Earth Syst. Sci., 20, 1783–1803, 2020
https://doi.org/10.5194/nhess-20-1783-2020

Research article 19 Jun 2020

Research article | 19 Jun 2020

Snow avalanche detection and mapping in multitemporal and multiorbital radar images from TerraSAR-X and Sentinel-1

Silvan Leinss et al.

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Short summary
To assess snow avalanche mapping with radar satellites in Switzerland, we compare 2 m resolution TerraSAR-X images, 10 m resolution Sentinel-1 images, and optical 1.5 m resolution SPOT-6 images. We found that radar satellites provide a valuable option to map at least larger avalanches, though avalanches are mapped only partially. By combining multiple orbits and polarizations from S1, we achieved mapping results of quality almost comparable to single high-resolution TerraSAR-X images.
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