fallout View Profile Tohoku-Chihou-Taiheiyo-Oki Earthquake and tsunami Tohoku-Chihou-Taiheiyo-Oki Earthquake and tsunami On 11 th March, 2011 Japan reeled under a colossal tsunami from a  9.0- magnitude  ( M W )  undersea   megathrust earthquake  and it is reported that  it is  the most expensive natural disaster on record. This extremely destructive