Tsunamis generated by earthquakes generally propagate as long waves in the deep ocean and develop into sharp-fronted surges moving rapidly towards the coast in shallow water, which may be effectively simulated by hydrodynamic models solving the nonlinear shallow water equations (SWEs). However, most of the existing tsunami models suffer from long simulation time for large-scale high-resolution real-world applications. In this work, a graphics processing unit (GPU) accelerated finite volume shock-capturing hydrodynamic model is presented for efficient tsunami simulations. The model is demonstrated to consistently save approximately 40 times of computational cost for all of the benchmark tests.

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