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Thirty years of evolution of the Sedrun landslide (Swisserland) from multitemporal orthorectified aerial images, differential Digital Terrain Models and field data

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    Title: Thirty years of evolution of the Sedrun landslide (Swisserland) from multitemporal orthorectified aerial images, differential Digital Terrain Models and field data
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    Date: 2016
    Publication type: Technical report
    Authors:
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    1. SEP C
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    Keywords
    1. Landlside, aerial images
    2. Digital Elevation Models
    3. image correlation

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    Venue
    Science and Engineering Publishing Company

    Abstract

    The 3D displacement fields of the Sedrun landslide located in Switzerland in the Grison canton have been computed for two periods (1973 to 1990 and 1990 to 2003) by combining Digital Terrain Models (DTM) differences and correlation of aerial ortho-images. The displacement fields, which are similar for the two periods, have been compared to the tectonic structures which exist at the surface of the landslide. Zones of major velocity gradient visible on displacement maps correspond to areas marked by strong br