Urban structure reinforces attitudes towards tsunami evacuation

Abstract Evacuation is a critical life-saving action, especially in devastating natural hazards such as near-field tsunamis. However, the development of effective evacuation measures remains challenging to the extent that a successful example has been referred to as a ‘miracle’. Here we show that ur...

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Main Authors: Fumiyasu Makinoshima, Yusuke Oishi, Fumihiko Imamura
Format: Article
Language:English
Published: Nature Portfolio 2023-05-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-023-33562-9
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author Fumiyasu Makinoshima
Yusuke Oishi
Fumihiko Imamura
author_facet Fumiyasu Makinoshima
Yusuke Oishi
Fumihiko Imamura
author_sort Fumiyasu Makinoshima
collection DOAJ
description Abstract Evacuation is a critical life-saving action, especially in devastating natural hazards such as near-field tsunamis. However, the development of effective evacuation measures remains challenging to the extent that a successful example has been referred to as a ‘miracle’. Here we show that urban structures have the potential to reinforce attitudes towards evacuation and significantly influence the success of tsunami evacuation. Agent-based evacuation simulations revealed that a distinctive root-like urban structure formed in ria coasts reinforces positive evacuation attitudes by effectively gathering evacuation flows and leads to higher evacuation rates compared to typical grid-like urban structures, which can explain the regional differences in the number of casualties in the 2011 Tohoku tsunami. Although a grid-like structure reinforces negative attitudes under low evacuation tendencies, with leading evacuees, its dense feature helps to propagate positive attitudes and drastically improve evacuation tendencies. These findings pave the way for making successful evacuation inevitable through harmonised urban and evacuation plannings.
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spelling doaj.art-f80770e5d2614a0fb57456ed7ae9e6142023-05-21T11:15:44ZengNature PortfolioScientific Reports2045-23222023-05-0113111010.1038/s41598-023-33562-9Urban structure reinforces attitudes towards tsunami evacuationFumiyasu Makinoshima0Yusuke Oishi1Fumihiko Imamura2Fujitsu LimitedFujitsu LimitedInternational Research Institute of Disaster Science, Tohoku UniversityAbstract Evacuation is a critical life-saving action, especially in devastating natural hazards such as near-field tsunamis. However, the development of effective evacuation measures remains challenging to the extent that a successful example has been referred to as a ‘miracle’. Here we show that urban structures have the potential to reinforce attitudes towards evacuation and significantly influence the success of tsunami evacuation. Agent-based evacuation simulations revealed that a distinctive root-like urban structure formed in ria coasts reinforces positive evacuation attitudes by effectively gathering evacuation flows and leads to higher evacuation rates compared to typical grid-like urban structures, which can explain the regional differences in the number of casualties in the 2011 Tohoku tsunami. Although a grid-like structure reinforces negative attitudes under low evacuation tendencies, with leading evacuees, its dense feature helps to propagate positive attitudes and drastically improve evacuation tendencies. These findings pave the way for making successful evacuation inevitable through harmonised urban and evacuation plannings.https://doi.org/10.1038/s41598-023-33562-9
spellingShingle Fumiyasu Makinoshima
Yusuke Oishi
Fumihiko Imamura
Urban structure reinforces attitudes towards tsunami evacuation
Scientific Reports
title Urban structure reinforces attitudes towards tsunami evacuation
title_full Urban structure reinforces attitudes towards tsunami evacuation
title_fullStr Urban structure reinforces attitudes towards tsunami evacuation
title_full_unstemmed Urban structure reinforces attitudes towards tsunami evacuation
title_short Urban structure reinforces attitudes towards tsunami evacuation
title_sort urban structure reinforces attitudes towards tsunami evacuation
url https://doi.org/10.1038/s41598-023-33562-9
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AT fumihikoimamura urbanstructurereinforcesattitudestowardstsunamievacuation