Table 1 

 Period of Peak Energy Density 

 for Each Tape File 



Tape 

 File 



1 



2 

 3 

 4 



Approximate 



T , sec 

 2 



1.45 

 2.25 

 2.86 

 3.60 



network which allowed control of the wave heights generated. In addition, the 

 waves were generated in a water depth 25 cm greater than at the breakwater and 

 shoaled to the water depth at the structure over a 1-V on 15-H slope (see 

 Figure 2) . This setup ensures that severe conditions can be developed at the 



SCALE 



1 



3 r 



TRAINING 

 WALL 



WAVE GAGES 



-19 METERS TO WAVE GENERATOR 

 FROM END OF TRAINING WALLS 

 1 



15 



T) 



WAVE GAGES 



REEF 

 BREAKWATER 



CONCRETE PLATFORM 



i^ 



T\ 



1 2 3 4 5 6 7 8 9 10 11 12 1 



DISTANCE ALONG CHANNEL (M) 



Figure 2. Cross section of test channel 



structure site. Incident zero-moment wave heights H ranged from about 1 



mo ° 

 to 18 cm. 



9. Three parallel wire-resistance wave gages were used in front of the 

 breakwater to resolve the incident and reflected wave spectra using the method 

 of Goda and Suzuki (1976) , and two wave gages were placed behind the structure 

 to measure the transmitted wave height. The location of gages is shown in 

 Figure 2. During data collection gages were sampled at a rate of 16 times per 

 second for 256 sec by the same DAS which controlled the wave generator motion. 



