(az)? = average incident wave amplitude at line j 
i 
j P P ar 
(k,)2 average reflection coefficient at line j = (2) 
iL 
The reflection coefficient is then determined by taking 
(B-6) 
Irregular wave information is displayed in the form of band spectra, using 11 
lines per band and using a variation of equation (B-6) to determine the reflec- 
tion coefficient for each band. 
In the case of monochromatic waves, a nonlinear waveform is described by 
a Fourier series with each component moving at the speed of the primary wave, 
and equation (B-6) is used to determine the reflection coefficient. 
5)8) 
