ABOVE HYDROPHONE 

 200 N. M. RADIUS 

 400 N. M. RADIUS 

 600 N. M. RADIUS 

 800 N. M. RADIUS 



0.5 



0.4 



0.3 



0.2 



0.1 



0.0 



o 



u -0.1 



LL 



° 0.5 



0.4 































--^rrrsi 





























^ 









* 



Il 





















^..'"' 



/ 





<^; 









\ 















A 



/'il 



v 



—*-.»' 





~~s 



/ \ 



'*». 

















/ 



fin 

























































& 





■' 





















X 



r 





/fl 



'-•y 





























% 



w 

































I 









































































STATION A 





0.3 



0.2 



0.1 



0.0 



-0.1 































/ 



-^ 































/ / 































X / 



/ / 

 // 































/ 



'it 



,- — 



























//' 



/ 











j 



^ 



















/> 



/ 



i 



t 







A 





>5 



\ 

















fe 



/ 

 / 







.--' 



r 























# 









>■ 



s 

 .^x 



/ 







V 



v. \ 









^V 



..... 



# 



'/ 





















» **- 



>»' 



. 





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V^** 

 X 























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v. 



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r-r- 



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ST-4 



TIO 



sl B 





10 12 16 20 25 32 40 50 63 80 100 126 160 200 250 320 400 

 FREQUENCY, C/S 



Figure 6. Variation with frequency of coefficient of correlation between sound 

 pressure spectrum level and cumulative maximum wave heights observed at 

 the indicated radial distances for the hours 0600 and 1800 GMT, April through 

 December 7964. 



14 



