井戸沢断層に沿って出現した地表地震断層に対する地上3次元レーザースキャナー計測 3D laser scanner measurement of displacement appeared along the Idosawa fault
Normal fault type earthquake (M7.0) was occurred at Fukushima-ken Hamadouri area on 11<sup>th</sup> April 2011. A lot of displacements with this earthquake were appeared along the Idosawa fault in the inland area of Iwaki city locates in the southeast of Fukushima prefecture. The maximum displacements reach into 2m are seen around Shionohira settlement. 3D laser scanner measurement was done near the settlement. Measurement results provided us precise surface image of distribution of displacements. Not only obvious gaps at the field, but unrecognizable flexure are able to be figured out, which cannot be measured by discrete survey with leveling rod or other surveying instruments. This precise surface image is expected to give us a figure of geomorphological process by the earthquake.
写真測量とリモートセンシング 50(5), 296-301, 2011-11-09