海浪波高与周期联合概率密度分布的研究

STUDY OF THE JOINT PROBABILITY DENSITY DISTRIBUTION OF WAVE HEIGHTS AND PERIODS

本文分析了石臼港的波浪实测资料。将获得的波高与周期联合概率密度分布图与现有的主要理论分布模式和经验统计模式进行了比较,考察了各种模式与实测结果的适合程度。本文还对可能影响波高与周期联合概率分布的谱特征值与统计特征值进行了研究,寻求出主要的控制参数。最后用数值模拟的方法探讨了浅水因子对联合概率分布的影响。

By means of 236 records of sea waves observed at SHI JIU port, an examination of various theories for the joint distribution of the wave heights and periods, e. g. the theory of Longuet-Higgins, theory of C. N. E. X. O. and theory of Sun Fu, was first undertaken in this paper.It has been demonstrated that the joint distribution of the wave heights and periods of sea waves exhibit quite large variabilities. One of the questions may be what the parameter governing the joint distribution is. To solve the problem, records classified into four or three groups according to the rank of the parameters (mo、ε、v、Qp、R、H in turn) are second analysed.Finally by making use of numerical simulation method, how the joint distrbution is influenced by H is studied in this paper.