

D LV 



X CB 

 / 2,3.4 



X LEGEND 



y^ CB: Central Beach 

 X CP: Castlewood Park 

 X LS: Lakeshore Park 

 Q Z^X LV: Lakeview Park 



^^3°X DCP, 



1 1 



1 1 1 1 1 1 1 



-20 20 40 60 



Xj . Measured, m 



Figure 11. Evaluation of Suh and Dalrymple's (1986) relationship 

 for salient length 



pocket-beach type structures with periodic tombolo formation (Central Beach 

 and Castlewood Park Beach). The correlation coefficient R is equal to 0.67. 



47. Because data defining the equilibrium volume and spit thickness to 

 the lee of each breakwater segment were not readily available for US projects, 

 a direct comparison between Harris and Herbich's (1986) volumetric and Nir's 

 (1982) thickness relationships (Equations 45 and 3, respectively) could not be 

 performed. However, the measured spit area was directly compared with a pre- 

 dicted area value using Harris and Herbich's volumetric relationship divided 

 by Nir's spit thickness parameter. It should be recognized that this combined 

 evaluation is not a true assessment of either method; however, it 



does give an indication of whether the combined relationships are accurate in 

 predicting spit area. The measured spit area is calculated by assuming a 

 triangular shape of the salient/tombolo. Much scatter is apparent in the 

 comparison (Figure 12), with a correlation coefficient equal to 0.18. 



48. Seiji, Uda, and Tanaka's (1987) ranges to predict gap erosion (Equ- 

 ations 30 through 32) were evaluated (Figure 13) . The lower boundary for 



31 



