GEOGRAPHIC RELATIONSHIP OF POWER SPECTRUM 



To show a general relation of the power-spectrum peak 

 values over the background to geographic location, the values 

 were plotted with reference to longitude. The purpose was to 

 determine if the internal waves in the Gulf of California (along 

 lower longitudes) had specific frequencies different from those in 

 the open Pacific (along higher longitudes). Peak to background 

 values of 1. 6 and greater are circled (fig. 29). 



For the shallow isotherms (fig. 30), no shift in significant 



0.35 



0.30 



0.25 



0.20 



0.15 — 



0.10 



0.05 



0.00 



■1.2 



1.5 



1.5 



■1.3 



■1.4 



1.2 



./■ 3 1^2 I'" 

 • 1.7 U 2 



■1.3' 



1.2 



1.3 

 1.4 



1.5- 



1-1.2 '■•" -1.4." 



f' 3 .,,1.6" "'■'!■» ,.3 , ^i 



•1.2 



■1.4 



■1.3 



•1.1 1.2-j . 2.5 



•1-6 i].i 1.8 £ 



1.6 



X 



1.2 



1.3 



•1.5 

 1.4 -1.1 



1.6 



11 ' 1 7 1 



•1.3 



•1.4 



1.2 



•1.5 



■1.1 



1.9 

 1.3 



1.5 

 1.5 



■1.5 



1.4 • 1.7 



1.4- 



1.3- 



1.6 



■1.2 



•1.3 1.5 18 - 

 1.2 1.9 \ 1.6 yl.l 



. -1.4 l 2\ • / 



^l.a. : j 'H 



.12 " 1 - 4 ' 181 



1.4 1.1 .1.3 * h6 , J- 3 ' '1-8 



1.5 1-3- 



,14 1.5" 1.-5 



V 4 _ 1.4, 1.6 



!. 2 i 12 1-4 ,.2122.1-5 • 2.2 M 3 



1.2 .14 



L4 1 1 4 i -,1.31.4 



i -12 • -1-3 • . n i . „ 



,>, '1-3 - 1 ] - 3 



l-4-i 1-5 , n „ 



1 -3 LJ 1.2 



1.6 LJ 



■1.5 



1.4 



1.6 

 1.4 



1.3 



1.1 



! '1-3 



.1.9 



1.31,2 # i.7 

 ' 1.6 

 : ' 1.4" "1-2 



1.4 

 .3 

 1.4 



1.5 

 •1.5 



• 1.6 



•1.4 



•1.3 



•1.4 

 •1.2 



112 c 



m c 



no c 



109° 1( 



LONGITUDE 



107° 



106 c 



Figure 30. Summary of longitudinal distribution of power spectrum from successive 

 half-minute readings of isotherm depth in the main thermocline (shallower isotherm). 

 Circled are the more significant ratios. 



59 



