Spatial Dis tribution of Community Disas ter Resilience in Tehran Metropolis

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Baghernezhad Elnaz; AZIZI MOHAMMAD MEHDI

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Journal: HOVIATESHAHR Year:2020 | Volume:14 | Issue:42 Page(s): 5-18

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Title

Spatial Dis tribution of Community Disas ter Resilience in Tehran Metropolis

Author(s)

Baghernezhad Elnaz | AZIZI MOHAMMAD MEHDI | Issue Writer Certificate

Keywords

Disas ters ResilienceQ1

Spatial Dis tributionQ1

Factor AnalysisQ2

Tehran MetropolisQ1

Abstract

Different models of disas ter resilience have been conducted to evaluate or promote resilience of cities prone to disas ters. By considering resilience as a set of adaptive capacities, pre-event capacities influence resilience. Therefor providing a methodology and a set of indicators to measure the present conditions influencing disas ter resilience within communities is the focal argument in assessment of resilience to natural hazards. As the resilience has different dimensions, one of the quantitative approaches to measure city disas ter resilience is to cons truct a composite index. The composite index, which encompasses a set of resilience indicators, can help in resilience quantitative evaluation, comparison between geographic units in terms of resilience, and elucidate resilience Spatial Dis tribution or assess resilience in a specific place in different periods of time. Tehran Metropolis, the capital of Iran, is located at the southern foot of Alborz Mountains, and surrounded by several fault lines. High vulnerability to disas ters of Tehran Metropolis as well as the increasing population and the accumulation of resources in the capital highlight the importance of assessing the disas ter resilience of this city in order to take appropriate measures to compensate for the shortcomings before the natural events occur. Based on the context represented here, the main objective of this s tudy is to cons truct a composite indicator for evaluating inherent community disas ter resilience for Tehran Metropolis. In this regard, a set of resilient indicators extracted from three evaluation models-Baseline Resilience Indicators for Communities (BRIC), Community Resilience Index (CRI) and Community Disas ter Resilience Index (CDRI)-were used to evaluate and cons truct a resilient composite index for Tehran Metropolis. Taking into consideration indicators’ feasibility, operationability as well as data-accessibility, 34 of the 143 identified indicators from the three models were selected at the neighborhood level (for the 368 neighborhoods of the City). By using exploratory Factor Analysis, the inherent resilience dimensions are shown in five social, infras tructure, economic performance, community-neighborhood relations and community-participatory domains. The Kaiser– Meyer– Olkin (KMO) measure was 0. 785, indicating that the correlation between the data is suitable for Factor Analysis and the cumulative variance of 5 factors explain 71. 687 percent of the data variance. The Spatial Dis tribution of composite disas ter resilience and its dimensions in Tehran Metropolis indicate that the wes tern and southwes tern neighborhoods of the city have the leas t inherent resilience. The northern and central neighborhoods are in a better position than the southern neighborhoods in terms of resilience. Among the resilience dimensions, the infras tructure dimension has had the mos t negative impact on the neighborhoods with an adverse resilience situation. To conclude, the quantitative disas ter resilience evaluation provides a clear picture of the s tatus quo. Therefore, by assessing resilience in different geographic units, it is possible to compare and identify differences between areas, reduce shortcomings, and take advantage of opportunities. Besides, by measuring the resilience in different periods of time, one can unders tand any increase or decrease in resilience of a place and improve this quality before the events, especially in cities with high population density and prone to earthquakes like Tehran.

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APA: Copy

Baghernezhad, Elnaz, & AZIZI, MOHAMMAD MEHDI. (2020). Spatial Dis tribution of Community Disas ter Resilience in Tehran Metropolis. HOVIATESHAHR, 14(42 ), 5-18. SID. https://sid.ir/paper/408995/en

Vancouver: Copy

Baghernezhad Elnaz, AZIZI MOHAMMAD MEHDI. Spatial Dis tribution of Community Disas ter Resilience in Tehran Metropolis. HOVIATESHAHR[Internet]. 2020;14(42 ):5-18. Available from: https://sid.ir/paper/408995/en

IEEE: Copy

Elnaz Baghernezhad, and MOHAMMAD MEHDI AZIZI, “Spatial Dis tribution of Community Disas ter Resilience in Tehran Metropolis,” HOVIATESHAHR, vol. 14, no. 42 , pp. 5–18, 2020, [Online]. Available: https://sid.ir/paper/408995/en

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