Evacuee Generation Simulation of the 2011 Tohoku Tsunami in Kadonowaki, Ishinomaki

Dohi, Yuji; Okumura, Yasuaki; Koyama, Maki; Kiyono, Junji

doi:10.2208/jscejseee.71.i_823

Cited by 5 publications

(2 citation statements)

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“…Several studies support strong ground shaking as the main, or even likely the only sign for deciding to evacuate (Lindell et al, 2015;Buylova et al, 2020). For people located inside buildings, ground shaking causes them to go outside as they can easily access the additional cues prompting evacuations (Dohi et al, 2015). However, for far-field events or tsunami-earthquakes, in which the ground shaking is weakly felt, the tsunami risk cannot be perceived, and ground shaking cannot be an efficient sign (Mori et al, 2007).…”

Section: But No Clear Trends On the Precise Influence Of Each Stimulu...mentioning

confidence: 99%

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Tsunami Risk and Alert Perceptions in Five Municipalities bordering the French Mediterranean Basin

Douvinet

Carles

Foulquier

et al. 2023

Preprint

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Abstract. Since the major tsunami that occurred in 2004, many studies have dealt with the evacuations, hazard mapping and awareness-actions, rather than on the perceived tsunami risk nor on alert perceptions declared locally by the population. In this study, we analyzed a sample of 750 answers to a face-to-face questionnaire, gathered from residents or workers in 5 densely-urbanized municipalities (e.g., Bandol, Bastia, Cannes, Six-Fours-Les-Plages, Sanary-sur-Mer), likely to be hit by a tsunami and bordering the French Mediterranean basin. Results first confirmed the tendency to underestimate the tsunami risk, as only 15.6 % identify tsunami as a risk. However, 48.7 % declare they should take protective actions if they feel ground-shaking on the seafront, and even 65.3 % if they also see a anormal sea movement. In contrast, the efficacy of alerting tools and the actors who can alert them are overestimated, as 44.7 % of the respondents think they should be alerted by sirens and 11.7 % by SMS, while such tools are not systematically present and rarely cover tsunami evacuation zones. And only 29.4 % correctly identify the official alert senders: mayors or prefectures. In contrast, 55.7 % declare they go high ground if they receive such instructions in one Alert SMS. The age, gender, residency status or location of the respondents explain a few differences in the collected data. However, relationships between tsunami risk and alert perceptions appear statistically not corelated. All the knowledge produced in this study finally might help the municipalities further develop awareness-actions and information on the tsunami, and inform what strategy they may apply in a short future to better increase the tsunami preparedness.

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Section: But No Clear Trends On the Precise Influence Of Each Stimulu...mentioning

confidence: 99%

“…And what to do (Q8)? These questions were adapted from Dohi et al, (2015) and Lindell et al (2015). We also want to check if the ground shaking related to water level movement further triggers evacuation intentions (Murakami et al, 2012).…”

Section: Data Collectionmentioning

confidence: 99%