The sea level and current velocity have an effect on wave height, and the wavedirection modulation is small.
潮汐、风暴潮对波浪的作用是通过其产生的不定常水深与流场实现的；水深与流速对波向的影响很小。
2
In the same sea state, the time process and the space distribution along major wavedirection of the sea surface wave are apparently different.
同一海况下，海面波动的时间过程和沿主波向的空间分布是明显不同的。
3
In this paper, three methods are carried out to calculate and comparative analyze the mean wavedirection, the same as mean wave length with four methods.