Wave Board 



Toe of Slope 



Top of Slope 



Slope 



Riprap Absorber 



102' 



Gogs 



Array 



1 



Flat 

 Area 



87' 



1 on 50 



Slope 



23' 



30' 

 O 



Gage 

 Array 



2 



25' 



O 



Gage 



Array 



3 



\ 



Flat Area 



242' 



J\. 



Figure 3. Wave tank used in study 



the Time Series Analysis computer program,* which can execute several analysis 

 operations. The operations used in this study were mean downcrossing analysis 

 to obtain significant, maximum, and average wave heights, mean water level, 

 and significant and average wave period at each gage; single channel frequency 

 domain analysis to acquire peak period T p , zero-moment wave height Hmo , 

 and spectral density plots for each gage; and unidirectional spectral density 

 incident/reflection analysis to determine the incident and reflected 

 parameters at each array. 



Test Procedures 



15. Design waves were provided by SPL and were based on the annual and 

 extreme wave climate predicted for the project location. Fifteen wave and 

 still-water level (swl) conditions were selected for testing and are listed in 

 Table 1. 



* C. E. Long and D. L. Ward, 1987, "Time Series Analysis," unpublished 

 computer program, US Army Engineer Waterways Experiment Station, 

 Vicksburg , MS . 



10 



