小特集「平成30年の災害」
９. 喜多方市揚津地区地すべりおよび中津市耶馬渓地区地すべりの計測
2018 年 57 巻 6 号 p. 268-270
詳細
2018 年 57 巻 6 号 p. 268-270
Today's high-definition topographic data analysis and SfM 3D-Modeling technology is effective for measurement of ground displacement and estimation of landslide area. In this study, Digital Geomorphic Image Matching analysis using differential LiDAR DEMs was applied to measure wide-area ground displacements of landslide. As a result, over 6 m displacement for 2 months was quantitatively and spatially measured. In additional case study, SfM 3D-Modeling was conducted just after the large landslide occurred in mountainous region. High-definition topographic data quickly made from aerial oblique photographs was effective for emergency planning for countermeasure work.
