Response time to flood events using a social vulnerability index (ReTSVI)

<p>Current methods to estimate evacuation time during a natural disaster do not consider the socioeconomic and demographic characteristics of the population. This article develops the Response Time by Social Vulnerability Index (ReTSVI). ReTSVI combines a series of modules that are pieces of i...

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Main Authors: A. Hofflinger, M. A. Somos-Valenzuela, A. Vallejos-Romero
Format: Article
Language:English
Published: Copernicus Publications 2019-01-01
Series:Natural Hazards and Earth System Sciences
Online Access:https://www.nat-hazards-earth-syst-sci.net/19/251/2019/nhess-19-251-2019.pdf
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author A. Hofflinger
A. Hofflinger
M. A. Somos-Valenzuela
A. Vallejos-Romero
author_facet A. Hofflinger
A. Hofflinger
M. A. Somos-Valenzuela
A. Vallejos-Romero
author_sort A. Hofflinger
collection DOAJ
description <p>Current methods to estimate evacuation time during a natural disaster do not consider the socioeconomic and demographic characteristics of the population. This article develops the Response Time by Social Vulnerability Index (ReTSVI). ReTSVI combines a series of modules that are pieces of information that interact during an evacuation, such as evacuation rate curves, mobilization, inundation models, and social vulnerability indexes, to create an integrated map of the evacuation rate in a given location. We provide an example of the application of ReTSVI in a potential case of a severe flood event in Huaraz, Peru. The results show that during the first 5&thinsp;min of the evacuation, the population that lives in neighborhoods with a high social vulnerability evacuates 15&thinsp;% and 22&thinsp;% fewer people than the blocks with medium and low social vulnerability. These differences gradually decrease over time after the evacuation warning, and social vulnerability becomes less relevant after 30&thinsp;min. The results of the application example have no statistical significance, which should be considered in a real case of application. Using a methodology such as ReTSVI could make it possible to combine social and physical vulnerability in a qualitative framework for evacuation, although more research is needed to understand the socioeconomic variables that explain the differences in evacuation rate.</p>
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spelling doaj.art-a3d8087a1bf54e85b2e50fb257b020a22022-12-22T02:16:08ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812019-01-011925126710.5194/nhess-19-251-2019Response time to flood events using a social vulnerability index (ReTSVI)A. Hofflinger0A. Hofflinger1M. A. Somos-Valenzuela2A. Vallejos-Romero3Nucleo de Ciencias Sociales, Universidad de la Frontera, Temuco, 4780000, ChileButamallin Research Center for Global Change, Universidad de La Frontera, Temuco, 4780000, ChileButamallin Research Center for Global Change, Universidad de La Frontera, Temuco, 4780000, ChileNucleo de Ciencias Sociales, Universidad de la Frontera, Temuco, 4780000, Chile<p>Current methods to estimate evacuation time during a natural disaster do not consider the socioeconomic and demographic characteristics of the population. This article develops the Response Time by Social Vulnerability Index (ReTSVI). ReTSVI combines a series of modules that are pieces of information that interact during an evacuation, such as evacuation rate curves, mobilization, inundation models, and social vulnerability indexes, to create an integrated map of the evacuation rate in a given location. We provide an example of the application of ReTSVI in a potential case of a severe flood event in Huaraz, Peru. The results show that during the first 5&thinsp;min of the evacuation, the population that lives in neighborhoods with a high social vulnerability evacuates 15&thinsp;% and 22&thinsp;% fewer people than the blocks with medium and low social vulnerability. These differences gradually decrease over time after the evacuation warning, and social vulnerability becomes less relevant after 30&thinsp;min. The results of the application example have no statistical significance, which should be considered in a real case of application. Using a methodology such as ReTSVI could make it possible to combine social and physical vulnerability in a qualitative framework for evacuation, although more research is needed to understand the socioeconomic variables that explain the differences in evacuation rate.</p>https://www.nat-hazards-earth-syst-sci.net/19/251/2019/nhess-19-251-2019.pdf
spellingShingle A. Hofflinger
A. Hofflinger
M. A. Somos-Valenzuela
A. Vallejos-Romero
Response time to flood events using a social vulnerability index (ReTSVI)
Natural Hazards and Earth System Sciences
title Response time to flood events using a social vulnerability index (ReTSVI)
title_full Response time to flood events using a social vulnerability index (ReTSVI)
title_fullStr Response time to flood events using a social vulnerability index (ReTSVI)
title_full_unstemmed Response time to flood events using a social vulnerability index (ReTSVI)
title_short Response time to flood events using a social vulnerability index (ReTSVI)
title_sort response time to flood events using a social vulnerability index retsvi
url https://www.nat-hazards-earth-syst-sci.net/19/251/2019/nhess-19-251-2019.pdf
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