Publicações

Muraleedharan, G., Lucas, C., Martins, D., Guedes Soares, C. e Kurup, P.G. (2015), “On the distribution of significant wave height and associated peak periods”, Coastal Engineering, Vol. 103, pp. 42-51

This study uses 21 years (1958-1978) month-wise grouped daily maximum significant wave height associated peak periods off Azores in the North Atlantic Ocean and extracted from 44 years HIPOCAS database to execute empirical average conditional exceedance of peak periods tp [m (tp)] and to estimate various peak period statistics. Plausibility of judging the distribution of the peak periods Tp by modelling the function m (tp) is investigated. Simulations of computed m (tp) by Erlang, generalized Pareto (GP3) and three-parameter Weibull model derived m (tp) are accessed utilising RRMSerror criteria providing the lowest values for Weibull-inferred m (tp). The 50 year peak period are estimated with reasonable accuracy by gamma quantile function in most cases, mean peak period by Erlang and generalized Pareto, average of the one-third the highest peak periods by all the three models, and average of the one-tenth the highest peak periods by Weibull deduced parametric relations. This work also provides a general statistical formula for estimation of significant wave period Ts. Average of one-third the highest peak period estimates by the parametric relation derived from GP3 using the general statistical formula for Ts, provide reliably precise results. The observational ratio Ts/T of 1.2 is appropriately interpreted for both computed and estimated ratio of mean peak period of one-third the highest significant wave heights to mean peak period.

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