The current phase-average wind wave model does not include the effect of porous bottom media on wave energy dissipation. The present paper incorporates the dissipation coefficient for porous bottom media in the wave action equation (WAE) of Wind Wave Model (WWM) (Hsu et al., 2005). The coefficient is obtained from the analysis mild-slope equation proposed by Rojanankmthron et al. (1989), and imitated Isobe (1987) method to add the effect of porous media in the WWM model. The accuracy of this model has been verified by comparing the experimental and numerical results. Several typical real sites were investigated using the present model.

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