An earthquake of magnitude 9.0 occurred on 11th of March at 14:46 in the east of Japan, causing a tsunami which hit the east coast, and made extensive damages in five prefectures: Aomori, Iwate, Miyagi, Fukushima and Ibaraki, and has made direct and indirect impacts to the other nearby provinces including Saitama, Chiba, Tokyo and Kanagawa prefectures. As of March 21, the confirmed number of death is 8,450 with reported missing 12,931. Thus, the total casualty may be over more than 21,000 people, and therefore making it as the worst disaster Japan has experienced after the World War II.