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Publications
Petrova, P.G., Guedes Soares, C. and Cherneva, Z. (2008), “Influence of the Third Order Nonlinearity on the Distribution of Wave Height Maxima in an Offshore Basin”, Proceedings of the 27th International Conference on Offshore Mechanics and Arctic Engineering (OMAE´08), 15-20 June, 2008, Estoril, Portugal, ASME, New York, Paper OMAE2008-58049
The effect of the coefficient of kurtosis, ë40, on the distribution of wave height maxima has been investigated. The data set used consists of water surface displacements in irregular deep water unidirectional wave fields generated in an offshore basin and defined by the JONSWAP spectrum. The full-scale records are of almost 3h17min duration. The measurements have been performed at ten equidistant gauges along the basin, which permits to follow the changes in wave statistics away from the wave-generator. Subsequently, the records have been split into series of different length, corresponding to N=100, 200 and 300 waves, and the probability density functions and the exceedance probabilities of the maximum wave heights have been constructed conditional on ë40. They have been compared with the modified Edgeworth-Rayleigh model of Mori and Janssen [21], which formulates the maximum wave distribution as a simple function of the coefficient of kurtosis and the number of waves in the sample.
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