Conference Agenda
Overview and details of the sessions of this conference. Please select a date or location to show only sessions at that day or location. Please select a single session for detailed view (with abstracts and downloads if available).
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Daily Overview |
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Climate Change Adaptation: Natural Disasters 3 Location: B003 Session Chair: Wai Yan Siu, Old Dominion University | |
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The Effect of Flood Alerts on Evacuation Behavior 1: University of Tokyo, Japan; 2: Nippon Koei Co., Ltd. This paper examines how the issuance and escalation of flood-related municipal evacuation orders affect residents' evacuation behavior. We exploit a 2022 flood in Hamamatsu, Japan, where a high-urgency alert (Level 5) was issued for the first time in a major metropolitan area under the revised Basic Act on Disaster Management. Using mobile phone population counts and vehicle traffic volumes, we find that a first evacuation order (Level 4) leaves traffic unchanged but increases the number of people staying. This is consistent with residents remaining in place rather than departing. Following the Level 5 alert, by contrast, the staying population falls within the first hour while traffic rises only with a delay. We read this pattern cautiously, but it points to an active behavioral response to the more urgent alert. Heterogeneity analysis reveals suggestive differences by hazard-map designation. These findings suggest that escalating alert levels trigger distinct behavioral responses, with implications for emergency communication. | |