Table 10. Summary of prototype wave conditions. 



Waver ider 

 distance 

 from shore 

 (km) 



Water 

 depth 



(m) 



(m) 



(s) 



Wave steepness 



Max. 



Min. 



Max. 



Min. 



Max. 



Min. 



0.5 



3.0 



6.0 



12.0 



7 

 17 

 18 

 25 



3.6 

 3.8 

 4.3 

 4.4 



0.5 

 0.5 

 0.4 

 0.4 



14 

 14 

 14 

 14 



;. 1 -. . , ■'■■■I.J 



3 

 3 

 3 

 3 



0.0641 

 0.0570 

 0.0570 

 0.0570 



0.0016 

 0.0016 

 0.0013 

 0.0013 



Table 11. Values of crest heights observed and predicted 

 for waves at Duck, North Carolina.^ 



Probability • 



Mean ratio of 



* 



Ai 



Coefficient 



of 



observed and 



Observed 



of 



exceedance 



predicted 





variation 





crest elevations^ 





(pet) 



0.150 



0.912 



0.847 



8.5 



0.135 



0.909 



0.873 



8.3 



0.100 



0.902 



0.945 



8.6 



0.050 



0.877 



1.087 



8.7 



0.020 



0.861 



1.281 



8.6 



0.010 



0.848 



1.415 



9.0 



0.005 



0.729 



1.545 



11.6 



^Values derived from 100 20-minute wave records taken in 

 October 1980. 



^Values of A^ from Table 8 used to make predictions. 



46 



