NUMERICAL STUDY ON THE TIDES AND TIDAL CURRENTS IN BOHAI SEA,YELLOW SEA AND EAST CHINA SEA

A successful simulation for the tides and tidal currents has been done based on the Finite Volume Coastal Ocean Model(FVCOM) with unstructured triangle grids in high resolutions in Bohai Sea,Yellow Sea,and East China Sea.The numerical model agreed with the observation well by comparing the observed data with the simulation results from 120 gauge stations and 14 tidal currents stations.The distributions of the co-tidal charts,maximum velocity and co-range charts when maximum velocity occurs of the tidal currents in 5 meter layer are shown in this paper according to the model results,respectively.Model results indicate that five semidiurnal and three diurnal constituents independent rotary tidal systems appear in Bohai Sea,Yellow Sea,and East China Sea,and they are all anti-clockwise;twelve tidal current-amphidromic points for semidiurnal and diurnal constituents can be found,respectively;the four semidiurnal tidal current-amphidromic points located at the two sides of the Okinawa Island and Amami Island are symmetry,three of them are reported at first time;two diurnal tidal current-amphidromic points located in the west of Kyushu Island of Japan are reported at first time,too.But the existence of them should be validated by observation.