Analytic Hierarchy Process (AHP) to analyze the tropical cyclone risk index of 15 coastal cities in China

Tropical cyclone is a common natural disaster, which causes detriment along its routine. In this paper, using the analytic hierarchy process (ahp) to conduct the risk assessment of tropical cyclones in the 15 coastal cities in China and analysis. Selecting 15 cities along the coast of China as the research object, the tropical cyclone disaster risk, the vulnerability of hazard-affected body, disaster prevention and mitigation capacity in preliminary evaluation. The evaluation index and 19 poor value are selected to standardize data processing, and then the weighted comprehensive evaluation method was used to obtain each evaluation index. On this basis, the comprehensive risk assessment system of tropical cyclone disaster was established, and the risk distribution of tropical cyclone in coastal areas of China was obtained. The results showed that: (1) Yangjiang, Haikou, Xiamen and other cities were seriously affected by tropical cyclones, and they were also high risk areas, so the early warning of tropical cyclones should be improved in this area; (2) The high value areas of vulnerability of disaster bearing bodies are mainly distributed in Shanghai, Xiamen, Guangzhou and other cities; (3) Shantou, Yangjiang, Wenzhou and other cities are relatively weak in disaster prevention and mitigation capacity, these areas should strengthen investment in infrastructure and medical and health care. In general, the tropical cyclone risk index in the south coast of China is generally higher than that in the north coast.