1. Tsunami Research Center, Port and Airport Research Institute , 3-1-1, Nagase, Yokosuka 239-0826, Japan
2. Disaster Control Research Center, Tohoku University , 6-6-11, Aoba Aramaki, Sendai 980-8579, Japan
3. Disaster Prevention Research Institute, Kyoto University , Gokasho, Uji 611-0011, Japan