Characteristics of the tidal current and residual current in the seas adjacent to Zhejiang

Mainly based on the field data measured in the investigation of the coastal zone and islands of Zhejiang Province in recent years, we analysis the characteristics of the tidal current and residual current in the zone. The harmonic constants are obtained from the observed data by harmonic analysis.Furthermore, the paper discusses the type and the movement form of the tidal current in the seas adjacent to Zhejiang, and gives the distributions of maximum probale current velocities, tidal current ellipse of \%M\-2\% component and residual current in summer and winter. With these results, we draw a series of meaningful conclusions in this paper. Thereby, we also get a thorough knowledge of the characteristics of the tidal current and residual current in the whole coastal zone of Zhejiang Province.