!10m 



405m 



HORTON: THE EFFECT OF ROUGH INTERFACES ON SIGNALS 

 THAT PENETRATE THE BOTTOM 



10 



\\cn 



T 



T 



^2 =«2 (k^/a)2/3 



5.5' 



9.5' 



k = 2TT/WAVE LENGTH IN WATER 



a = GRAZING ANGLE 

 o 



A = DISPLACEMENT OF BEAM 

 1/a - 750m f = 1 kHz 



Figure 3. BREKHOVSKIKH' s COMPARISON FOR 

 WAVE THEORY AND RAY THEORY 



280 



