A26

Analysis of volcanic ash falls for large eruption on Sakurajima using volcanic ash transport simulation

Kazuto Kondo, Hirokazu Tatano, Masato Iguchi, Hiroshi Tanaka

Volcanic ash brings many disasters. It is important to grasp the risk in advance. In this paper, from January 1, 2008, a total of 3890 days of volcanic ash transport simulation was conducted for the preliminary ash fall risk analysis assuming large scale eruption. The eruption scale is based on Taisho eruption of 1914, and only the weather conditions are changed by each day. we used as a result to analyze the ash falls on the risk to the airport and the collapse of the building, which is part of the field of damage due to ash fall. As a result, we have figured out how frequently, how much ash falls in major airports in Japan, estimated evacue population due to ash fall. �

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