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TitleMonitoring landslides and volcanic deformation from InSAR techniques
AuthorSinghroy, V; Ohkura, H; Molch, K; Couture, R
SourceGeo-imagery bridging continents: proceedings of the XXth International Society for Photogrammetry and Remote Sensing Congress; International archives of the photogrammetry, remote sensing and spatial information sciences vol. 35, pt. B7, 2004 p. 570-573
LinksOnline - En ligne
Alt SeriesEarth Sciences Sector, Contribution Series 2005015
MeetingXXth International Society for Photogrammetry and Remote Sensing Congress; Istanbul; TR; July 12-23, 2004
Mediapaper; on-line; digital
AreaFrank; Miyake-Jima Island; Canada; Japan
Lat/Long WENS-114.5000 -114.0000 49.7500 49.5000
Lat/Long WENS 139.6667 139.6667 34.2500 34.0000
Subjectssurficial geology/geomorphology; structural geology; remote sensing; satellite imagery; filters; interference patterns; vegetation; deformation; landslides; flow mechanisms; flow structures; slope failures; fault patterns; volcanic processes; subsidence rates; planning; modelling; Frank Slide
Illustrationssatellite images; block diagrams; photographs; time series; graphs
AbstractOur research has shown that interferometric SAR techniques can be used to monitor deformation at landslides and volcanoes under specific conditions. Special filtered interferograms are being used to reduce speckle and minimize errors created by vegetation. InSAR images were used to monitor current post slide motion along existing fault lines at the Frank Slide a 30 x 106 m3 rock avalanche, in the Canadian Rockies. This information is used to understand the post failure mechanism and mobility of the slide. At Miyake-Jima Island in Japan a filtered interferogram was used to monitor post eruption volcanic shrinkage. The volcano erupted in July-August 2000 that led to the total evacuation of inhabitants from the island. Our differential InSAR results show subsidence at the summit after the eruption, and allow us to monitor the post eruption processes, thereby assisting in planning the return of local residents to the island.

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