BUCK: ARCTIC ENVIRONMENTAL LP ACOUSTICS MEASUREMENTS, 

 MODELS AND PLANS 



20 



_ 60 



lij 

 (r 



OD 

 Q 



N 



X 



o 



^ 100 



< 



CO 

 CO 



o 



140 



TlTTm rill Mill I 1 M Mil 



# r, II C K ( 1 T / ) 



BUCK (1968) 



MELLEN&MARSH(I965) 



COMPUTED (FFP) 



• = RAY THEORY 



+ "- H IJfR HODll 



100 



RANGE. KM 



iii[ I III iiH| 1,111 Mil 



lOOC 



Figure 9. DATA AND THEORY COMPARISONS 



741 



