shallower isotherm vary from 1 to 4 feet (per 304 feet of travel) 

 for the 50th percentile and from 2 to 8 feet for the 70th percentile. 

 The relation of vertical change to angle is given in table 3. 



TABLE 3. CUMULATIVE DISTRIBUTION OF SLOPES OF ISO- 

 THERMS (DEEP AND SHALLOW ISOTHERMS) 



Depth Change 

 Per 304 Feet 



Angle From 

 Horizontal 



Percent of 

 Observations 



>5 



>0°56' 



11.6 



5 



0°56' 



3.5 



4 



0°45' 



3.5 



3 



0°34' 



4.4 



2 



0°23' 



6.3 



1 



0°11' 



10.2 







0°0' 



20.5 



-1 



-0°11' 



10.5 



-2 



-0°23' 



6.4 



-3 



-0°34' 



4.4 



-4 



-0°45' 



3.5 



-5 



-0°56' 



3.5 



<-5 



<-0°56' 



11.7 



The plots show that the isotherm in the main thermocline 

 has higher values, or a rougher thermocline, in the region ex- 

 tending south and southeast from Baja California. About 100 

 miles off the point, a wide band of water, running northeast- 

 southwest, showed a smoother thermal structure. Farther off- 

 shore, the roughness increased slightly. 



A similar presentation was made of the deeper-isotherm 

 slope. The geographic distribution of the absolute -value 50th 

 percentile is shown (fig. 23A) with contours ranging from 2 to 3. 

 feet (per 304 feet of travel). The absolute-value 70th percentile 

 values range from 3 to 6.5 feet (fig. 23B). Both contours show 



46 



