An integrated flood risk assessment model for property insurance industry in Taiwan |
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| Authors: | Hsu Wen-Ko Huang Pei-Chiung Chang Ching-Cheng Chen Cheng-Wu Hung Dung-Moung Chiang Wei-Ling |
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| Institution: | (1) Research Center for Hazard Mitigation and Prevention, National Central University, Jhung-li, Taoyuan, Taiwan;(2) Department of Civil Engineering, National Central University, Jhung-li, Taoyuan, Taiwan;(3) Institute of Economics, Academia Sinica, Taipei, Taiwan;(4) Department of Agricultural Economics, National Taiwan University, Taipei, Taiwan;(5) Institute of Maritime Information and Technology, National Kaohsiung Marine University, Kaohsiung, 80543, Taiwan;(6) Taiwan Risk Management Corporation, Taipei, Taiwan; |
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| Abstract: | Taiwan is located in an area affected by Northwest Pacific typhoons, which are also one of the most important sources of rainfall
to the island. Unfortunately, the abundant rainfall brought by typhoons frequently produces hazards. In recent years, typhoons
and floods have caused serious damage, especially Typhoon Morakot in 2009. In this study, a probabilistic model is developed
based on historical events which can be used to assess flood risk in Taiwan. There are 4 separate modules in this model, including
a rainfall event module, a hydraulic module, a vulnerability module, and a financial loss module. Local data obtained from
the Taiwan government are used to construct this model. Historical rainfall data for typhoon and flood events that have occurred
since 1960, obtained from the Central Weather Bureau, are used for computing the maximum daily rainfall for each basin. In
addition, the latest flood maps from the Water Resources Agency are collected to assess the probable inundation depth. A case
study using the local data is carried out. Assessment is made to predict possible economic loss from different financial perspectives
such as the total loss, insured loss, and loss exceeding probabilities. The assessment results can be used as a reference
for making effective flood risk management strategies in Taiwan. |
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