Recommendations are: 



(a) Educate practicing coastal engineers to be aware 

 that currents may affect wave data measured on submerged 

 pressure gages, increase or decrease wave heights, and alter 

 the direction of waves reaching the shoreline. 



(b) Apply recent advances in understanding to wave 

 refraction in moderately complex realistic current fields. 

 Summarize results in a format usable by engineers. 



(c) Develop, test, and document a practical refraction 

 program to cover depth and current changes. Ultimately, this 

 program should treat irregular waves, but the initial 

 objective should be to adequately treat regular waves. 



(d) Measure the propagation of waves across nonuniform 

 currents in the laboratory. The current and turbulence 

 characteristics should be measured in detail, especially the 

 changes in current distribution due to waves. Also measure 

 wave-current interaction effects on simple structures and 

 sediment beds. 



(e) Evaluate field evidence for wave-current interaction, 

 initially with computed current fields and existing wave and 

 bathymetric data. Collect wave data at sites inshore of 

 strong, reversing tidal flows. 



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