tidal lag

With the simulated cotidal chart of M2 tidal constituent, the distributing characteristics of the amplitude and the phase lag of M2 in the sea region near Zhanjiang are revealed.

根据模拟结果绘制的M2分潮的同潮图，揭示了湛江附近海域M2分潮振幅和迟角的分布特征以及M2分潮的传播和发展规律。

The results show that the parameters have no obvious differences between digital observation data and analogue observation in data form, observation precision, variance, median error of tidal factor and phase lag.

结果表明：①溧阳台数字化观测和模拟观测资料的形态、观测精度、方差、潮汐因子中误差、相位滞后等参数无显著差异；

The formulas of calculating the tidal coefficient and lag time are developed, and the corrected formulas of lag influence of tide in the well level are given.

导出了计算固体潮系数和滞后时间的公式，给出了考虑滞后影响的井水位固体潮校正公式。

And the relation among the tidal parameters, such as tide factor and phase lag, as well as the lithology and the conditions of the boreholes is discussed in this paper.

同时，讨论了潮汐因子、相位滞后等参数与岩性及井孔条件的关系。