Table 2 



Model Data and Estimates Using 



SPM and Owen's Methods 



Aaen 



s Measured Overtopping, ft 3 / 



sec/ft 



Estimated 



Overtopping 



Storm 



Prototype 1:8 



1 



:10 



SPM Method 

 < 10" 5 



Ower 



's Method 



1 



4 x 10~ 5 9 x 10" 5 



5 x 



10-5 



N/A 



2 



2 x 10"* 5 x 10" 5 



1 X 



10"* 



< 10 -5 





N/A 



3 



8 x 10" 5 1 x 10"* 



2 x 



10" 4 



< 10" 5 





N/A 



4 



4 x 10 -3 4 x 10 -3 



2 x 



10" 3 



2 x 10" 3 



2 x 



ID" 2 



5 



4 x 10" 21 4 x 10" 4 



4 x 



10-* 



8 x 10" 5 



6 x 



10" 3 



6 



6 x 1CT 4 6 x 10" 4 



5 x 



10-* 



1 x 10" 4 



6 x 



10" 3 



10-2 



O 10" 3 





LEGEND 







AAEN-PROTOTYPE 



• 



AAEN-1:8 



a 



AAEN-1:10 



D 



OWEN'S METHOD ESTIMATE 



■ 



SPM METHOD ESTIMATE 



STORM 4 



o», 



STORM 5 



o«, 



STORM 6 



Figure 18. Aaen's (1977) overtopping data with estimates 

 using Owen's method and the SPM method 



ignored differences in structure slope and material, the agreement between 

 Aaen's data and the SPM estimate is encouraging. 



62. Owen's method estimates an order of magnitude more overtopping than 

 Aaen measured. Since Owen's method is based on irregular wave tests on a 

 1:2 slope, the disagreement between Aaen's data and Owen's method is 



33 



