-40 



-60 



-80 



-100 



STONE AND WAVE 

 PROFILE AT MAX. 

 VERTICAL VELOCITY 



MAXIMUM VERTICAL 

 VELOCITY 



3T/4 



T/2 



T/4 



INCREASING TIME 



Figure 2.4. Velocity vector for one wave period for armor lifting measured 1 cm outside 

 the armor layer with H, = 8.4 cm, f= 2s,d, = 24 cm, and di=\l cm 



1 8.18-- 



Figure 2.5. Vertical velocity time series outside (top) and inside (bottom) armor layer 

 with H,= 12 cm, f = I s,d, = 24 cm, and d^ = 8.8 cm for the outer measurement and ^^ 

 = 13 cm for the inner measurement 



20 



