II . RECOMMENDATIONS 



It is recommended that fundamental, long-range research be conducted to 

 extend the Boussinesq theory into the surf zone. For practical engineering 

 investigations of coastal hydraulics, knowledge from Boussinesq simulations 

 will be most useful to improve the time-averaged radiation stress approach and 

 its eventual coupling to sediment and pollution transport models. Therefore 

 continued refinement , of radiation stress numerical models is also recommended 

 to include nonlinear and irregular wave effects and improved wave breaking and 

 wave energy dissipation models in the surf zone. 



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