WAVE SIMULATION USING INTEGRALLY COUPLED WAVE-TIDE-SURGE MODEL OF THE EAST CHINA SEA

Abstract

The recent introduction of unstructured wave models has made nesting unnecessary and the coupled system (ADCIRC hydrodynamic and SWAN wave model) can run on the same unstructured mesh. This identical and homogeneous mesh allows the physics of wave-circulation interactions to be correctly resolved in both models. The unstructured mesh can be applied to a large domain allowing all energy from deep to shallow waters to be seamlessly followed. There is no nesting or overlapping of structured wave meshes, and no interpolation is required. The waves and storm surge were allowed to develop on the continental shelf and interact with the complex nearshore environment. The resulting modeling system can be used extensively for prediction of the typhoon surge and usual barotropic forecast. The result show that it is important to incorporate the wave-current interaction effect into coastal area in the wave-tide-surge coupled model. At the same time, it should consider effects of depth-induced wave breaking, wind field, currents and sea surface elevation in prediction of waves. Especially, we found that the wind wave significantly enhances the current and surge elevation. The resulting modeling system can be used for hindcasting (prediction) and forecasting the wave-tide-surge coupled environments at complex coastline, shallow water and fine sediment area like around Korean Peninsula.of wave-circulation interactions to be correctly resolved in both models. The unstructured mesh can be applied to a large domain allowing all energy from deep to shallow waters to be seamlessly followed. There is no nesting or overlapping of structured wave meshes, and no interpolation is required. The waves and storm surge were allowed to develop on the continental shelf and interact with the complex nearshore environment. The resulting modeling system can be used extensively for prediction of the typhoon surge and usual barotropic forecast. The result show that it is important to incorporate the wave-current interaction effect into coastal area in the wave-tide-surge coupled model. At the same time, it should consider effects of depth-induced wave breaking, wind field, currents and sea surface elevation in prediction of waves. Especially, we found that the wind wave significantly enhances the current and surge elevation. The resulting modeling system can be used for hindcasting (prediction) and forecasting the wave-tide-surge coupled environments at complex coastline, shallow water and fine sediment area like around Korean Peninsula.