This study examines the effects of waves and local wind forcing on storm surge by using a coupled numerical model of surge, waves and tide and the effect of waves on sediment resuspending by an imbedded suspended sediment transport model in Modaomen Estuary, China. The hindcast results for Typhoon Hagupit (2008) indicate that although local wind forcing is significant in surge level prediction, only employing local wind forcing without incorporating wave radiation stresses is unable to properly simulate storm surge including water level set-up and the wave-driven alongshore current. This study also finds that the effect of waves on sediment concentration at landfall is significant because the waves play important role in sediment stirring and resuspending during the hurricane. The sudden siltation thickness including wave effect is apparently larger than that without considering waves, especially near the shoal.

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