Risk Assessment of Tsunamis Along the Chinese Coast Due to Earthquakes

Abstract China’s coastal areas are densely populated, economically developed, and located in close proximity to several potential tsunami sources; therefore, risk cannot be ignored. This study assessed of China by developing a framework for assessment from the perspectives hazards, vulnerability, exposure. First, probabilistic hazard (PTHA) model was applied estimate sources both local crustal faults circum-Pacific subduction zones based on numerical simulations. The output PTHA includes wave height distributions along coast. Then, an indicator system reflecting exposure vulnerability tsunamis established using entropy method analytic hierarchy process. findings show that is 3 m southern coast Bohai Sea, Pearl River Estuary, Yangtze Delta exceeds 2 near Taiwan Strait 2000-year return period. results cities at highest level (level I) include Tangshan, Yantai, Hong Kong, while high II) Fuzhou, Xiamen, Quanzhou many Delta, Sea. Our can provide understanding differences between Chinese may affected future.