GIS ANALYSIS OF THE RELATIONSHIP BETWEEN EARTHQUAKE DAMAGES AND MICRO LANDFORMS USING LAND CONDITION MAPS

M. Koarai, H.P. Sato, H. Une, T. Kitahara

Geographical Survey Institute, Tsukuba, Japan

koarai@gsi.go.jp

 

It is known that there exists strong relationship between earthquake damages and micro landforms. To mitigate earthquake disasters, preparation of a hazard map with an effective use of land condition map is needed. It clarifies the natural conditions of the land by landform classification in large scale using aerial photo interpretation method. In this paper, two applications using land condition map are described.

The first application is the study on clarifying the relationship between micro landforms and earthquake damages by combining the vector data of land condition maps and the information of earthquake damage distribution using GIS, especially case of the 1854 Ansei-Tokai Earthquake, the 1891 Noubi Earthquake and the 1944 Tou-Nankai Earthquake in Tokai District. The recent publication of land condition maps in vector data format by Geographical Survey Institute enabled us to conduct this kind of study, namely, the study combining various national land data using GIS.

The other application is the earthquake strong motion distribution map using land condition map.