Abstract
The volume of landslides generated by the Mid Niigata prefecture Earthquake in 2004 was estimated by the elevation change detection based on the high-accurate DEM extraction techniques using high-resolution satellite images. Two 5 mmesh DEM data, which showed the elevation model on the Niigata Prefecture before and after the disaster, were extracted from SPOT 5 satellite stereo pair images, and the elevation changes were analyzed by the difference of two DEM data. The landslides were detected as the high elevation change area, and the landslides volume was estimated by the totaling the elevation changes. As a result, maximum ±50m of elevation change was measured on the largestscale landslide and about 25 million m3 in total volume of landslides was estimated on the Mid Niigata prefecture.
