The mean cover depth as a function of Swas shown to be described by 

 Equation 6.5. This relation, rearranged to be eroded cover depth, also provides a good 

 fit to the new data, as shown in Figure 7.9. In addition, the standard deviation of 

 minimum cover depth o^ was shown to be described by Equation 6.6. This equation, 

 along with the new data, are shown in Figure 7.10. Equation 6.6 underpredicts the 

 variability in cover depth, as expected. Again, Series D' produced most of the outlying 

 points. Data from the other series are reasonably well predicted by Equation 6.6. 



The profile and variability relationships given by Equations 5.10 and 6. 1 

 through 6.6, derived from Series A', B', and C data, fit the new data remarkably well, 

 considering the ranges of stone grading and peak wave period in this experiment. 

 Equation 6.3 and 6.6 underpredict the variability and will likely require modification as 

 more data are acquired. It appears that the coefficient of variation is more scattered for 

 low damage levels. The relations given above allow prediction of profile shape and 

 alongshore variability of the profile. The above relations were developed using only 

 profile data without regard to incident wave conditions or water levels. 



137 



