PORTER: SOFAR PROPAGATION OF WIDE-BAND SIGNALS TO LONG RANGES 





h 



SHOT #426 ( ~ 250 km) 



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547 



a 



3 



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u] 



577 



--tl^w-^ SWWw-44^AA'W^*AVV\^f^^ lljj 



l/*^-— 



636 ( -380 km) 



en 



0- 



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-2.0 -1.0 



r CsecJ 



Figure 2. SIGNAL STRUCTURE VERSUS RELATIVE ARRIVAL TIME 



637 



