2014 年 24 巻 p. 101-110
When the 2011 Great East Japan earthquake and tsunami occurred, Natori city was severely destroyed and human loss reached almost 900. The author conducted questionnaire survey on evacuation in the city and collected 324 cases. This study examined statistical data of human casualty and analyzed the questionnaire data to clarify affecting factors for evacuation. The findings are as follows. Considering day time population, fatality rate distribution vs age groups is estimated. As for travel means, automobiles share majority of 65% and traffic jam became severer due to delay. Evacuation in the 2010 Chile Tsunami affected the success of the 3.11 evacuation. Behaviors of going back home and moving from one evacuation place to the other are dangerous in flat plain topography.