SECT. 1] 



CONTINUOUS BEFLECTION PROFILING 



63 



5.0 



SECONDS 

 TRAVEL 

 TIME 



6,0 



7.0 



(Sh»>W#^ \ ps**^ 



t«4,-4 



-+":^Tir^-4r.t^'5f-«k. 



5.0 



6 



7.0 



1 2 3 



APPROX SCALE 

 NAUTICAL MILES 



P'ig. 14. Portion of a profile about 90 miles bearing 256°T from Bermuda, on the Bermuda 

 Rise. 



Source : 25,000 joule sparker 



Receiver : 40 ft, five-element hydrophone array 



Towing speed : about 5 knots 



Analysis filter: 100-200 c/s band-pass 









\ k 



2 4 6 8 10 



APPROX. SCALE NAUTICAL MILES 



12 



Fig. 15. A portion of a profile about 150 miles bearing 256°T from Bermuda, over abyssal 

 hills on the Bermuda Rise. 



Source : 25,000 joule sparker 

 Receiver: 40 ft, 5 -element hydrophone array 

 Towing speeds : vary from 4 knots to 7 knots 

 Analysis filter: 150-300 c/s band-pass 



