WEAKLY NON-GAUSSIAN MODEL OF WAVE HEIGHT DISTRIBUTION FOR NONLINEAR RANDOM WAVES

Nobuhito Mori, Takashi Yasuda

Abstract


The wave height distribution with Edgeworth's form of a cumulative expansion of probability density function(PDF) of surface elevation are investigated. The results show that a non-Gaussian model of wave height distribution reasonably agrees with experimental data. It is discussed that the fourth order moment(kurtosis) of water surface elevation corresponds to the first order nonlinear correction of wave heights and is related with wave grouping.

Keywords


random waves; non-Gaussian model; height distribution

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