o 







21 . 



(Numbers 



in 



dicate amplitud 



E rank for constituents) 









- 





\kr 



1740 







300 







V^12 \ 

 10 



15 



K 



3 



K 



,_j — 1720 







200 



- 





','1 



u 



'\ 



u 







100 



- 



1700 





11 



\ 



\ ♦ '^ 



h3 \ 9 A 

 1 \ j\^^ 



- r700 hrs 

 fl - 1720 hrs 

 + - 1740 hrs 









- 





/ 



\ 



1 10 W 







300 



- 





J 





1 A r 



v y ^ 

 li 2 



« 12 



k' 







200 



- 









WW 



'\ 

















Mm ^ \ 

 1 ' 1 ' ) 



2 





100 



- 







16 





*8 









- 









1 ^^ 



\ ^^ 





300 



- 









17 ' 



\ / 



















y 





200 



- 













'k' f\ 





100 



- 









■\ 



/ ''\ \ 



1 'MX 









- 









V 



9 

















. 



18 







1 



1 1 





1 



o 



18 

 1 1 1 





0.12 



0.14 0.16 0.18 



FREQUENCY (HZ) 



0.20 



Figure D-1. South Haven, 1700 to 1800 e.s.t., 1,024-second records analyzed. 

 Starting time of record is noted beside each curve. 



98 



