Randomly Generated Plane Wave 



-asn 



I 



64.0 

 Longitude 



Figure 6-1 Graphic representation of an elementary theoretical model 

 for anisotropic surfaces. The surface is created by gener- 

 ating a random walk (with theoretical amplitude spectrum of 

 A = a-s"^) in the x (90° azimuth) direction. These values 

 are simply extended to the second dimension, creating a 

 lineated surface with strike = 0". Viewpoint is from the 

 southwest. 



82 



