As known to all, tides and river discharge at both the Yangtze River Estuary and Hangzhou Bay are quite strong. So the wave data measured at these regions must have been affected by current. Since the combination of c...As known to all, tides and river discharge at both the Yangtze River Estuary and Hangzhou Bay are quite strong. So the wave data measured at these regions must have been affected by current. Since the combination of current with wave climate is a random process, i. e. spring tide may be met with small waves, or neap tide with strong waves, so the measured wave data related to the wind data have great divergence under the influence of current. In this paper, based on the research of wave refraction by influence of both current and water depth (Pan and Li, 1987), the influence of tide current and river discharge on the wave parameters in Luojing area of Yangtze River Etuary and Beilum harbour area are discussed. As a conclusion, for determining the design wave in still water, or for establishing the relationship between waves and winds, pure wave data should be separated from the measured wave data.展开更多
In this paper, the numerical modelling of the tidal level and current in the Bohai Sea was carried out with ADI method, by taking the sum of four main tidal components M2,S2K2,O1 as the open boundary condition. The ca...In this paper, the numerical modelling of the tidal level and current in the Bohai Sea was carried out with ADI method, by taking the sum of four main tidal components M2,S2K2,O1 as the open boundary condition. The calculated values were consistent with the predicted ones (the observed values in the case of calm) in the Tidal Table. On the basis of the modelling of the tide, the sea level and current fields under the effects of strong wind were simulated. The calculated results were also quite satisfactory.展开更多
文摘As known to all, tides and river discharge at both the Yangtze River Estuary and Hangzhou Bay are quite strong. So the wave data measured at these regions must have been affected by current. Since the combination of current with wave climate is a random process, i. e. spring tide may be met with small waves, or neap tide with strong waves, so the measured wave data related to the wind data have great divergence under the influence of current. In this paper, based on the research of wave refraction by influence of both current and water depth (Pan and Li, 1987), the influence of tide current and river discharge on the wave parameters in Luojing area of Yangtze River Etuary and Beilum harbour area are discussed. As a conclusion, for determining the design wave in still water, or for establishing the relationship between waves and winds, pure wave data should be separated from the measured wave data.
文摘In this paper, the numerical modelling of the tidal level and current in the Bohai Sea was carried out with ADI method, by taking the sum of four main tidal components M2,S2K2,O1 as the open boundary condition. The calculated values were consistent with the predicted ones (the observed values in the case of calm) in the Tidal Table. On the basis of the modelling of the tide, the sea level and current fields under the effects of strong wind were simulated. The calculated results were also quite satisfactory.
