Two-dimensional numerical simulation of tides in the coastal waters of China based on SCHISM
Based on the Semi-implicit Cross-scale Hydroscience Integrated System Model(SCHISM),a series of numerical experiments are carried out with multi-source data.Using tidal harmonic analysis method,the harmonic constants for four constituents (M2,S2,K1,and O1),and their relative cotidal charts are generated.The location of the no-tide point is compared with previous studies.The results obtained through the comparison against harmonic constants from 114 tide gauge stations and the FES2014 tidal model suggest that the tidal model can effectively simulate tidal characteristics in the China seas.Moreover,the influence of self-attraction loading(SAL)tides on tidal simulation is further quantitatively examined,the findings demonstrate that the SAL effect significantly influences the M2 component tide,resulting in an amplitude impact exceeding 20 mm in both the Zhejiang and Fujian regions.In addition,this study includes sensitive experiments investigating the effects of altering resolution and incorporating shallow water constituents by validating the model using three tide gauge stations near Dongtou District in Wenzhou.It's found that improving model resolution from 3 km to 100 m can enhance simulation accuracy by approximately 30％,whereas the inclusion of shallow water constituents only results in an improvement of up to about 8％in certain areas.
万方数据
维普
