Mapping of micro topography using airborne laser scanning |
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| Authors: | Email author" target="_blank">Tatsuo?SekiguchiEmail author Hiroshi?P?Sato |
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| Institution: | (1) Geographical Survey Institute, 1 Kitasato, Tsukuba, Ibaraki, Japan |
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| Abstract: | Intense rainfall conditions and seismic activity commonly trigger fluidised landslides which are characterized by rapid movement and long run-out. They are potentially a very dangerous form of landslide phenomena and may result in extensive damage due to their sudden movement. Until now, photogrammetry has been used to produce maps and investigate such landslides in areas where these disasters occur. Recently, however, airborne laser scanning technology has become a promising technique for making topographical maps and investigating the micro topographic details of these landslide disasters, particularly on slopes around urban areas where the potential risk is high. In this study, airborne laser scanning was carried out in the Tama Hills, near Tokyo, Japan, which is extensively affected by this type of landsliding. The effectiveness of this technique was tested and compared with a laser contour map and aerial photograph interpretations. |
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| Keywords: | Airborne laser scanning Laser contour map Micro topographic classification map Aerial photograph interpretation |
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