Author(s)

M. Mori & T. Kameyama

Abstract

Recently, flood damage has occurred frequently in Japan due to sudden heavy rainfall. Particularly, floods caused serious damage many times in 2008. Rapid flood analysis requires contour lines, fine aerial photo images, and a 3D model of the region. However, it is generally difficult to prepare ortho aerial photo images with high resolution for a region in order to quickly analyze damage. Conversely, recent photo images in Google Earth view are of relatively high quality, and are sufficient for use by a Geographic Information System (GIS). Contour lines generated in a GIS for 3D models are transformed to the Google Earth desktop application in a KML file. KML files are files specially formatted for Google Earth that contain data that allows them to be viewed in the Google Earth desktop application. Flooding of individual houses can be precisely estimated depending on flood water levels in the flooded area. Keywords: flood, 3D GIS, digital elevation model, 3D view, remote sensing, DEM/DSM, high resolution.

Keywords

flood, 3D GIS, digital elevation model, 3D view, remote sensing, DEM/DSM, high resolution