Abstract
The Mw 8.6 earthquake of offing west of north SUMATRA of April 11, 2012 triggered a mass evacuation of the people in Banda Aceh, 400km away from the epicenter. Fortunately, such a tsunami more than 1 meter in height, was not observed. But, more than one hundred thousand people in Banda Aceh, who had experienced the tragic damage by the Indian Ocean Tsunami of 2004, tried to evacuate towards inland. And they encountered very heavy traffic jam. Therefore, the authors surveyed the evacuation feature by interviewing 1,065 people, about 0.73 % of the population in the coastal area of Banda Aceh, in order to extract the lessons for the better disaster-reduction operation of Banda Aceh. The feature was analyzed through comparisons with that of the East Japan Great Earthquake and Tsunami disaster case.
