Abstract
Natural open-spaces are amenities for residents in daily life and these are spaces decreasing damage in case of earthquake disaster. This paper shows that making process of alternatives for earthquake disaster mitigation by environmental creation. The region is regard as hierarchy relation of districts and chou-chou-moku in this process. Adjacency relation of districts and chou-chou-moku are represented by graph. These are nodes in these graphs. These nodes have information of factors about hazard of earthquake disaster. These graph expresses bias of earthquake risk in region. Alternatives for earthquake disaster mitigation by environmental creation are made using these information and graphs. Finally, analyses were done and making alternatives in Hokusetsu region.
