Tidal current is the essential dynamic condition in the coastal zone and estuary and the basic active factor also to study the water environment and ecology problem.
潮流和风生流都是浅海水流运动的基本形式，也是研究海岸河口水动力和环境问题的基本动力因素。
2
The tidal force of solid tide is an important triggering factor.
固体潮的引潮力是一种重要的触发因素。
3
The results show that gravity tide factor in tidal variation has better reflection to earthquakes, and with good correspondent ratio.