frequency with longitude is apparent. A slightly greater con- 

 centration of high ratios falls between 108°W and 109°W in the 

 area where a water-mass boundary is expected (south-southeast 

 of Cape San Lucas). 



The power spectrum for the deep isotherm (fig. 31) contains 

 more high ratios in the central part of the area 108°-110°W. 

 There is only a slight relationship of significant power spectrum 

 values to longitude in these data. 



0.35 



0.30 



0.25 



0.20 



0.15 



0.10 



0.05 



0.00 



•1.3 



•1.3 



1.2- 



1.3- 



•1.3 

 • 1.8 



r 1.4 



il. 5 



•1.3 

 •1.2 



•1.1 



1.2- -1.3 



1.3- 



1.6 

 I.?'- l-l- 



7T 2T71 — 



- 1 - 5 1.5- -^ 



• 2.0 



•1.5 



1.4- 



1.2' 



1.5 



1.4 



1.6 • -1.2 



1.2- 1.2- 

 •1.1 

 • 1.1 



■1.1 1 -2--i.5 



|1.4 1 

 1-3' 1.2 \ 



2.1 • 



• L3 13- - 12 



1 - 8 i..3. 1 :t; 4 ] ™ - 1 - 3 



, . 1-4 1.6 '■ -2.2 , , 



1.4 l-2'l.l V , r 1.2- 1 " 5 



•1.5 



1.5- 1.4 1 - 6 14; , 1.8 -1.3 . 13 



1.2- -1.4 X.1.6 , 6 i ! . 1;5 ] - 6 ' 

 15- ' i 1. • '• J ' 



1 - 61 ' 7 l ■ ] - 3 17 ^ 1-5 2.4 

 • 15 i I- 1 • '•/ • 



1:2.12 j.6 [1.3- . • 1.6 1-2 



1.7 -^1.4 ■ ' .1.4 1 " 



•1.3 2.2 '- 4 l 



1.3-1-1 1.8 • 



J- 2 2.1 : ' 



1.4^1.2 ! , 



1 4.- 12 1.5 , - 1.4i 

 1.4- . u • 1.2- • 



1.4- - 1 - 5 1 ' 3 ' 1 - 1 



9 



.5- 1-4 



4 -1-2 



1.6 



1.2- 



■1.2 



1.7 



Ml.4 

 1-3 1.21 



1.3- "1-3 



5 1.4 



•1.3 

 1.6 



■ 1.9 



2.0 



■1.3 



1.6- 1.4 . -1.3 

 1.3- 1.3-' 1-3 

 DEEP ISOTHERM POWER SPECTRUM 

 I I I 



•1.4 

 •1.4 



l.l 1 



1.9 



1.7 



•1.3 



■1.2 

 • 1.2 



•1.2 



•1.3 



•1.2 

 •1.1 



112° 



lll c 



110° 109° 1( 

 LONGITUDE 



107° 



106 c 



Figure 31. Summary of longitudinal distribution of power spectrum from successive half- 

 minute readings of isotherm depth below the main thermocline (deeper isotherm). Circled 

 are the more significant ratios. 



