災害小特集「東日本大震災以降の主な災害とその対応」
4-② 地震前後の衛星SAR画像解析とレーザ地形データ差分解析による造成地周辺の地盤変位
2021 年 60 巻 5 号 p. 254-257
詳細
2021 年 60 巻 5 号 p. 254-257
After the main shock of 2018 Hokkaido Eastern Iburi Earthquake (Mj6.7), coseismic ground displacement or deformation was observed around eastern region of Sapporo City in Hokkaido, Japan. In this study, multi-temporal LiDAR DEMs and Digital Geomorphic Image Matching method was applied to measure ground displacements of meter-scale. As a result, local ground displacements and subsidence by lateral flow of valley fill embankment were observed in the developed residential land. These results were consistent with the results estimated by analysis of SAR Images.
