Inderscience Publishers

Modelling the interdependencies of critical infrastructures during natural disasters: a case of supply, communication and transportation infrastructures

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This paper introduces the methodological challenge of identifying and quantifying the interdependencies among several critical infrastructures. First, interdependency structures during a natural disaster are modelled-based on past events, considering supply (electricity, water and gas), communication (internet and telephone) and transportation infrastructures (road networks). Interdependencies are defined with respect to physical, functional and socioeconomic interrelationships. A quantification strategy is then introduced based on empirical surveys and economic models. As a case study, the developed model is applied to the 2004 Mid-Niigata Earthquake, which severely damaged infrastructure systems in the central mountainous area of Japan.

Keywords: natural disasters, critical infrastructures, interdependences, resiliency factors, modelling, supply infrastructure, communication infrastructure, transportation infrastructures, electricity industry, water industry, gas industry, communications, internet, telephone networks, road networks, Japan, earthquakes, infrastructure damage

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