KUTSCHALE: LOW-FREQUENCY PROPAGATION IN THE ICE-COVERED ARCTIC OCEAN 



20 



_ 60 



UJ 



oc 



GO 

 Q 



N 



o 



o 



00 



140 



Figure 20 



I I I I Mill 1 I I I Mill 1 I I I MM 



BUCK (1968) 



MELLENaMARSH(l965) 



COMPUTED (FFP) 



• = RAY THEORY 



'III iiii| I I I I iiil| I I II MM 



10 



100 



000 



RANGE. KM 



COMPARISON BETWEEN MEASURED AND COMPUTED 

 PROPGATION LOSS . THE DATA CURVES OF MELLEN 

 AND MARSH AND BUCK ARE FROM MEASUREMENTS 

 MADE FROM SEVERAL HUNDRED SHOTS AT VARIOUS 

 DEPTHS OVER PATHS IN VARIOUS AREAS. 



712 



