-500 



S.275 4 



£-50 



X 



O- 175 



O 



400 





 ,01 - 



to 10° 



10- 



QIO-H 

 ^ 10 



i; io-« 



I 10-5 



10-6 



10- 



16 32 48 64 80 



DISTANCE (KILOMETERS) 



96 



1)2 



128 



10' 10° 10' 



FREQUENCY (CYQES/KILOMETER) 



102 



Figure 5-12 Typical amplitude spectrum of profiles collected on the 

 Continental Rise, east coast U.S. All fourteen profiles 

 examined in this province (shown in Figure 5-13) show 

 nearly identical patterns. The two linear segments^ in 

 this example intersect at ~0.3 cycles/km., with b = 

 -1.813, t = 0jpi42 m. for the longer wavelength model, and 

 b * -.524, a = 0.0645 m. for the shorter wavelength 

 model. 



76 



