Figure 21. Comparison of measured equilibrium bar height 

 (Zb)„ and empirical prediction (Zb)p 



between the equilibrium bar height predicted by the regression model (Equation 

 13) and the measurements. 



258. The temporal rate coefficients governing growth toward the maximum 

 equilibrium bar height for bars formed on erosional profiles had highest 

 correlation with sand fall speed. Similar to the situation for the rate 

 coefficient governing bar volume growth, correlation coefficients were small 

 (less than 0.5). However, a regression relationship between the rate coeffi- 

 cient and wave period, deepwater wave height, and sand fall speed gave a 

 relatively high coefficient of determination of 70 percent. This relationship 

 was considerably larger than any obtained for the rate coefficient pertaining 

 to bar volume growth. The sand fall speed and deepwater wave height accounted 

 for 60 percent of the variation in the data, giving 



a = 34.1 H -!•" w^-3« T^-23 



(14) 



93 



