FIXED AREA SURVEY OF TSUNAMI EVACUATION BEHAVIOR IN EARTHQUAKE EVENTS AFTER THE 2011 THOKU EARTHQUAKE: CASE ANALYSIS OF WATARI TOWN, MIYAGI PREFECTURE FROM 2011 to 2022

Abstract

 In some areas affected by the 2011 Tohoku Eartkquake, tsunami advisories and tsunami warning have been announced, such as the 2016 Fukushima-oki earthquake, the March 2021 Miyagi-oki earthquake, and the March 2022 Fukushima-oki earthquake. The authors have conducted a continuous questionnaire survey of coastal residents in Watari Town, Miyagi Prefecture, using a consistent sampling method. In this paper, by comparatively analyzing the actual situation of evacuation behavior in these four events, including the Tohoku Earthquake Disaster, we considered the relationship between changes in evacuation behavior over time, the time when the earthquake occurred and the scale of the hazard. As a result, differences in behavior related to 1) the scale of the earthquake/tsunami that occurred, 2) the time period of earthquake occurring, 3) the experience of the 2011 disaster and subsequent events, and 4) lifestyle changes were observed.