ANALYSIS OF TSUNAMI EVACUATION CAUSED BY THE GREAT EAST JAPAN EARTHQUAKE: A CASE STUDY OF IBARAKI PREFECTURE

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Author(s)

    • Tamura Makoto
    • Institute for Global Change Adaptation Science, Ibaraki University
    • Tabayashi Yu
    • Center for Research In Isotopes and Environmental Dynamics, University of Tsukuba
    • Ajima Kiyotake
    • Institute for Global Change Adaptation Science, Ibaraki University
    • Mimura Nobuo
    • Institute for Global Change Adaptation Science, Ibaraki University

Abstract

This study characterizes evacuation behavior in Ibaraki Prefecture in the aftermath of the Great East Japan Earthquake and tsunamis based on geographic information, questionnaires, and interview surveys. We identified several factors on which the starting time of evacuation depended, including awareness of evacuation warnings, understanding of anticipated tsunami inundation areas (hazard maps), and distance from anticipated inundation areas. We found that those who were aware of evacuation sites, hazard maps and/or anticipated inundation areas maps, and who lived in inundated areas tended to evacuate earlier. Conversely, many residents delayed their evacuation because they chose to go home and take care of their family first. To improve future responses to likely threats, evacuation behavior and local disaster management plans must be reviewed based on the knowledge gained from this disaster.

Journal

  • Journal of Japan Association for Earthquake Engineering

    Journal of Japan Association for Earthquake Engineering 14(3), 3_1-3_20, 2014

    JAPAN ASSOCIATION FOR EARTHQUAKE ENGINEERING

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