连云港近岸海域潮流动力特征

根据连云港近岸海域夏冬季多站同步连续实测潮流资料,分析了不同季节、不同潮周期潮流变化特征,并对实测潮流进行了准调和分析,进一步计算潮流椭圆要素,据此分析了潮流性质、潮流运动形式、最大流速和流向。结果表明:该海区涨落潮流速、历时具有一定的差异,潮流性质属于规则半日浅海潮流,近岸表现为往复流运动,随水深增加,旋转流明显,以逆时针方向为主,最大流速流向随季节不同差异明显。

Characteristics of tidal current dynamic in Lianyungang nearshore area

Based on the observation of the current at several stations conducted synchronically in winter and summer respectively in Lianyungang nearshore area, we analyze the variation characteristics of tidal current, and the type, motion form, maximum velocity and direction of tidal current with the tidal current elliptic factors calculated by the quasi-harmonic method. The results show that the velocity and duration of flood current and ebb current are different. The tidal current is classified as regular semidiurnal tidal current in shallow water. The tidal current is rectilinear current in the nearshore area. With increasing depth, the rotating flow is apparent, and most directions are counter-clockwise. The variation of the maximum velocity and direction are obvious in different seasons.