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Publicações
Fonseca, R.B., Goncalves, M. and Guedes Soares, C. (2017), “Comparing the performance of spectra wave model for coastal areas”, Journal of Coastal Research, Vol. 33(2), pp. 331-346
In the present study, the third generation spectral wave models MIKE 21 BW, SWAN and STWAVE are compared for the simulation of wave characteristics in shallow waters. The SWAN and STWAVE results were obtain from a previous study that compared their performance. The MIKE 21 BW results are now obtained with the purpose of comparing them to the previous two. Several target areas in the Portuguese coast were considered: Obidos bay and Figueira da Foz, both located in the central part of the continental Portuguese coast, Leixões harbor, located in the north coast, and Sines harbor, located in the west coast, south of Lisbon. The input parameters for the models were obtained from offshore buoys. In situ measurements from buoys and ADCPs were used to validate the models outputs. The models results are compared through the wave’s parameters, namely the Significant wave height (Hs), Peak period (Tp) and Mean wave direction (Dir). The sensitivity of MIKE 21 SW to some input parameters and physical processes such as wind, tide and nonlinear interactions is also verified. Information about the model performance for different forcing conditions and area types (bay, ports and straight shoreline) is provided. The results show a similar behavior between the models and they are statistically comparable. Both MIKE 21 SW and SWAN are complex models and have a large set of formulations and parameter choices. On the other hand, despite of its simplicity, STWAVE produced good results and is considerably faster than the other two.
Additional Index Keywords: SWAN, MIKE 21 SW, STWAVE, spectral wave models, shallow waters, Portuguese coast.
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