Abstract
Many large-scale earthquake disasters attacked throughout in Japan. In a mountainous region, many estates for housing which developed embankments were suffered a lot of serious damage. These damages were caused by subsurface structure which a foundation inclined. As the cause, embankment developed in the 20-50 years before didn't become united with a ground foundation and wade up a small landslide occurred by a ground motion from earthquake. Such situation has happened by many seismic hazards in the past disaster. Therefore, these ground foundations were revealed as well as the strength of the houses were also important. This study focused these facts that building, and housing damage rate varies depending on the subsurface structure in Sendai City due to the 2011 off the Pacific coast of Tohoku Earthquake. And analysis of the technique of the geographical information system (GIS), which was proved that those were right. Finally, Seismic risk in Sendai area is analyzed.
