HAMILTON: TIME VARIATIONS OF SOUND SPEED OVER LONG PATHS IN THE OCEAN 



1463 m/sec 

 4800 '/s 



SOUND SPEED 



1493 m/sec 

 4900 '/s 



1524 m/sec 

 5000 '/s 



1500in 

 5000' 





a 



3000m 

 u 10,000' 



Eh 



4500m 

 15,000' 



eastern N. Pacifi 

 sound channel axi 



western N. Atlant 

 sound channel axi 



-surface lens of 

 18°C Sargasso water 



. Atlantic 

 salty Mediterranean 



rusion 



SCHEMATIC SOFAR SIGNALS — 900 ran range 



Rays that penetrate 

 into 18°C Sargasso 

 v;ater 



Axis arrival 



WESTERN N. ATLANTIC EASTERN N. PACIFIC EASTERN N. ATLANTIC 



Figure D-1. SCHEMATIC SOUND SPEED PROFILES 



28 



