CENTRES OF UPWELLING AND ANTICYCLONIC SWIRLS 



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RELATIVE POSITION OF ANTICYCLONIC SWIRLS- DIAGRAMMATIC 



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REGIONS SUGGESTED BY THE CURVES 



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REGIONS RECOGNIZED BY 5CH0TT 



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Fig. 66. Centres of upwelling. The three curves illustrate the mean surface temperature of the current along 

 its path; they represent three zones parallel to the coast at <5 miles, 5-20 miles and 20-100 miles from it. 

 Above the curves, the two anticyclonic swirls off Peru are shown diagrammatically, their points of con- 

 vergence and divergence corresponding to the peaks and the dips in the curves. Equivalent swirls are 

 postulated off the Chilean coast. Below the curves, the four centres of upwelling are identified with the 

 regions recognized by Schott. The curves represent a combination of the data given in Appendix VI and 

 Fig. 34. Temperature records at greater distances than 100 miles are given as ringed dots. 



