1. (IAHR Member), Assistant Professor, Disaster Prevention Research Institute, Kyoto University, Yoko-oji, Fushimi-ku, Kyoto 612-8235, Japan
2. (IAHR Member), Professor, Disaster Prevention Research Institute, Kyoto University, Yoko-oji, Fushimi-ku, Kyoto 612-8235, Japan
3. Group manager of river engineering group, NEWJEC Inc., Honjo-Hidashi, Kita-ku, Osaka 531-0074, Japan
4. (IAHR Member), Associate Professor, Disaster Prevention Research Institute, Kyoto University, Yoko-oji, Fushimi-ku, Kyoto 612-8235, Japan