SUBSET 5 



APPROXIMATE THRESHOLD 

 OF STONE MOVEMENT 



SUBSET 



B n 



1 



337 



3 



450 



5 



631 



7 



222 



9 



222 



SPECTRAL STABILITY NUMBER, N 



Figure 9. Damage trends of the relative crest height as a function of 

 the spectral stability number for the stability subsets 1, 3, 5, 7, 



and 9 



Table 4 

 Average Values of Secondary Stability Variables by Subset 



Subset 

 No. 



1 



3 



5 



7 



9 



Relative 



Crest Height 



"as Built" 



h'/d 



c s 



0.99 

 1.18 

 1.41 

 1.27 

 1.06 



Reef 



Size 



B * 

 n 



337 



450 



631 



222 



222 



Ef tective 

 Reef Slope 

 "as Built" 



c'** 



1 



.90 



1 



80 



1 



.76 



1 



88 



1 



.88 



* B bulk number, defined by Equation 3. 

 n 



** C effective reef slope, "as built," defined by Equation 4, 



19 



