Modelling the long-term distribution of significant wave height with the Beta and Gamma models

The paper suggests modelling the long-term distribution of significant wave height with the Gamma, Beta of the first and second kind models. The three models are interrelated, flexible and cover the three different tail types of Extreme Value Theory. They can be used simultaneously as a means of ass essing the uncertainty effects that result from choosing equally plausible models with different tail types. This procedure is intended for those appl ications that require the long-term distribution of significant wave height as input rather than the prediction of extreme values. The models are fitt ed to some significant wave data as an illustration. Details about maximum likelihood estimation are given in Appendix A. (C) 1998 Elsevier Science Lt d. All rights reserved.