Evacuation Behavior of Residents in the Plains of Ishinomaki City During the 2011 Great Tsunami: Evacuation Feature of Tsunami Low Risk Area Neighboring Ria Coast

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This research aims to analyze the evacuation behaviors of residents in Ishinomaki's low tsunami risk areas during the 2011 tsunami.
Analyzed evacuation trip data from 1,108 residents using existing databases.
Conducted time-series analysis to observe evacuation triggers and behaviors.
Compared data with evacuation behaviors in nearby ria coast and lowland areas.
Evacuations began primarily due to ground shaking, with a notable increase following tsunami warnings.
Initial evacuation by car was quick, but residents shifted to walking due to traffic congestion during evacuation.
Residents’ awareness of nearby disasters heightened their perception of risk, influencing their evacuation decisions.

Analysis reveals evacuation patterns in a tsunami low risk area, suggesting significant impacts from information updates.

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Yozo Goto (2026) studied this question.

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