Abstract: Using the single-point ground wave radar data at Station Shensi and the water level data at three stations at Shengsi, Luchaogang and Daishan, the authors obtain flow vectors from the radial flow velocity of ground wave radar observation, and calculate four sub-tidal harmonic constants (O₁, K₁, M₂ and S₂).The tidal characteristics derived from the ground wave radar dataset are well agree with that from the tidal gague data. The authors also calculate the tidal energy flux and tidal dissipation rate. There is a good relationship between the tidal dissipation rate and topography. The study shows a good way to calculate tidal dissipation rate using ground wave radar data.

Key words: ground wave radar, characteristic value, tide type, tidal energy flux, tidal dissipation