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Landslide Hazard Assessment
Landslide hazard areas are defined when the locations of past landslides
are identified. Landslides change the landscape through the transportation of
vegetation and soil, thus affected areas have different canopy and soil
roughness than surrounding unaffected areas. Radar is sensitive to these
variances in roughness, and produces contrasting backscatter between affected
and unaffected areas.
RADARSAT beam mode - Both Standard and Fine beam mode can be
used to obtain detailed information on individual landslides.
RADARSAT incidence angle - Shallow incidence angles will minimize
geometric distortions associated with areas of moderate to high relief.
Look direction - For moderate to high relief terrain, acquisitions of both
ascending and descending passes maximizes the amount landslide information.
When to acquire RADARSAT data - Acquire data when landslide
information is required.
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