layer. These measurements were also made during one run of plan 3 with the following 

 characteristics: H, = 12 cm, T= 1 s, J, = 24 cm, and J^ = 8.8 cm for the external 

 measurement and ^^^ = 13 cm for the internal measurement. The measurement locations 

 for these time series are shown in Figure 2.6, where the structure slope is 1 V:2H. Here 

 it is clear that the velocities within the armor layer are highly irregular due to 

 turbulence. 





0.6 





0.4 





0.2 







 -0.2 



1 



-0.4 





-0.6 





-0.8 



-1 





/Vl/vu A.K^'^'^'*^^i°<^'y 1 







J—--^,M' \ / -^-'---^ 1 



■ / \ 1 \ 



/ \ /^-\ ■ 



■J (V 1 horizontal velocity | 



fj w 



1 i 1 \ 1 1 1 1 , 



5.5 



6 6.5 



time (sec) 



7.5 



Figure 2.3. Velocity time series for one wave period with H, = 12cm, T=l s, d, = 24 cm 

 and ^i = 8.8 cm measured 1 cm outside the armor layer 



19 



