2019 Volume 19 Issue 6 Pages 6_232-6_243
In this paper, the isolation probabilities of hamlets in Yamakoshi village during 2004 Niigata-ken Chuetsu earthquake and in Minami Aso village during 2016 Kumamoto earthquake were calculated and compared with actual isolation damage. Datasets of slope angles, PGAs of earthquake ground motion, and graphs of road networks are necessary for the calculation of the isolation probability. While the isolation probability was high in the whole area in Yamakoshi village, the isolation probability was high in only some hamlets in Minami Aso village. The results show good agreement with the fact that the whole village was isolated in Yamakoshi village and that only some villages were isolated in Minami Aso village.
