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Publicações
Santoro, A., Arena, F. e Guedes Soares, C. (2015), “The performance of the Quasi-Determinism theory in crossing seas conditions”, Maritime Technology and Engineering, Guedes Soares, C. & Santos T.A. (Eds.),Taylor & Francis Group, London, UK, pp. 1395-1402
The paper deals with the application of the Quasi-Determinism theory of Boccotti to high waves groups which occur in crossing seas, considered favorable conditions for the formation of extreme events. The theory enable the description of the deterministic profile to which the wave groups tend when the crest or height of the central wave is extremely large with respect to the standard deviation of the process. Thanks to the generality of the theory, it may be applied whatever the boundary conditions are and may handle different spectral shapes. The study was performed on data from the Norwegian laboratory Marintek in Trondheim (Norway) and on records from the Natural Ocean Engineering Laboratory (NOEL) of Reggio Calabria (Italy). All the time series analyzed deal with bimodal seas in which a swell system and a wind waves system coexist in the same area propagating with different directions of advance. The experimental results are compared to the theoretical profiles obtained starting from the theoretical spectrum describing the energy of the components at the location where the extreme event realizes. The comparison between the mean profiles of the highest waves recorded and the predictions of the theory in the space domain is given. The results show that the theory approximate quite well the large waves even in crossing seas conditions and thus they confirm that the output of the theory can be thought as the gene of the sea state analyzed.
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