The characteristics of the spatial distribution of "damage intensity" caused by disasters in the 1970s was examined by the adoption of the factorial analysis method. As a result of the cluster analysis based on the scores of the principal components analysis, the obtained disastrous divisions in the 1970s are group 1 (high-disastrous areas), group 2 (urbanized areas of building damage type), group 3 (rural areas of snow and fire disaster type), group 4 (metropolitan areas of flood type) and group 5 (non-disastrous areas). The geographical distribution of these groups was shown in Fig. 15. The high-disastrous areas in the 1970s were distributed on the south eastern part and northern part of Japan, which are characterized by the climatic disasters such as typhoons, rainstorms and heavy snowfall, nevertheless four earthquakes occurred during this period.
Geographical Reports of Tokyo Metropolitan University 21 275-292, 1986
Department of Geography, Tokyo Metropolitan University