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The incompatibility, uncertainty and other difficulties involved in the computation of source terms in the third generation wave model are discussed. Among the effects of these difficulties, the lack of spectral reliability and the expected slow improvement of the model are emphasized. The newly developed model based on an adopted wind-wave directional spectrum is briefly reviewed. The justification of using a given spectrum to build up a model is discussed in full length. The new model and the third generation model are compared in terms of reliability, performance, feasibility of improvement and convenience of usage. The new model has shown its advantages in the comparison and its potential in practical applications.
The incompatibility, uncertainty and other difficulties involved in the computation of source terms in the third generation wave model are discussed. Among the effects of these difficulties, the lack of spectral reliability and the expected slow improvement of the model are emphasized. The newly developed model based on an adopted wind-wave directional spectrum is briefly reviewed. The justification of using a given spectrum to build up a model is discussed in full length. The new model and the third generation model are compared in terms of reliability, performance, feasibility of improvement and convenience of usage. The new model has shown its advantages in the comparison and its potential in practical applications.