Date of Award


Degree Type


Degree Name

Master of Science in Ocean Engineering


Ocean Engineering

First Advisor

J. Hu


To fully characterize a non-Gaussian random process, in addition to the ordinary power spectrum, higher order spectra are also needed. In the present study, the concentration is on the bispectrum of second-order nonlinear random wave elevation (a non-Gaussian process) at deep water site. Two approaches for calculating the wave bispectrum are included: analytical approach and simulated approach. The analytical approach developed in this study is different from that used by Hasselmann et al. (1963). The simulated approach involves first simulating non-Gaussian wave signals and then estimating the bispectrum from the wave signals. Under the sea state described by a Pierson-Moskowitz wave spectrum, the results show that the wave bispectra estimated by analytical and simulated approaches are in perfect agreement.



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