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A New Nonlinear Distribution of Wave Height Based on Beta Surface Distribution

Using the nonlinear Beta distribution for random wave surfaces, a new nonlinear statistical distribution function of wave height is obtained based on transform x=a 2(1-H r). The quasi-Beta distribution, with two essential parameters ,ieskewness λ 3 and kurtosis λ 4 as the nonlinear factors, is a further development of the linear Rayleigh distribution of wave height. Laboratory observations show that the new nonlinear distribution of wave height based on Beta surface distribution is superior to the existing theoretical distributions and is more suitable for engineering practice.