Memoirs of the Graduate Schools of Engineering and System Informatics Kobe University, No. 7, pp. 1-7, 2015

Household evacuation behavior during a Natech accident

Junlei YU1, Akihiko HOKUGO2

1Graduate School of Engineering, Department of Architecture
2Research Center for Urban Safety and Security

(Received March 30, 2015; Accepted June 3, 2015; Online published June 16, 2015)

Keywords: Evacuation Behavior, Natech accident, Great East Japan Earthquake and Tsunami

This study analyzed data on household evacuation behavior in terms of departure time, transportation use, and evacuation shelter selection during a Natech accident (natural disaster triggered technological accident) occurred at an industrial park in Sendai during the Great East Japan Earthquake and Tsunami, on March 11, 2011. The questionnaire survey was conducted to the households within 2.5 km of the Natech accident as a case study. The results indicate that some households carried out multiple evacuations for different reasons. We presented and analyzed the distribution of departure time according to respondents’ evacuation reasons. Furthermore, we found that proximity to the disaster influenced households’ use of transportations, but not the choice of evacuation shelters. Moreover, it is found that the departure time and the transportation use were different among the groups with different age. The findings of this study advanced knowledge concerning when, how and where households evacuated when the Natech accident occurred and can assist emergency managers to develop strategies for protecting people under such conjoint risks.

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