Figure 14. Station Plan. August, 1954. 



LM 48 20 miles WSW of La Plata; October 4, 1954; 1300-1330; 207 cc. vol. 

 LM 49 Inside Salango Island; October 6, 1954; 1300-1340; flood; 53 cc. vol. 

 LM 50 15 miles NW Salango; October 6, 1954; 1620-1650; 95 cc. vol. 



15 miles NW Salango; 30 min. 1605-1635; October 7, 1954. 



Off La Plata; October 9, 1954; 1230-1300. 



15 miles NW Salango; October 9, 1954; 1645-1715. 



H Y » II O t; R A P H I r D A TA 



THE DISCUSSION of the hydrographic environments will be made in three 

 sections according to their geographic locations: Cabo Blanco, Peru; 

 Iquique, Chile; and Salango, Ecuador. 



Cabo Blanvo 



The location of the BT lowerings made off Cabo Blanco are given in 

 Figure 14. vSix of the BT stations were occupied on the same day and ail 

 ten stations within a ten day period. This is fairly synoptic. 



The temperature characteristic of the water mass is a good indicator of 

 its source in this region of juxtaposition of the water masses from the Peru 

 Current and Equatorial Countercurrent and for the depths presently dealt 

 with. This applies even to the surface temperature as the initial tempera- 

 ture difference of the two water masses is large — much too large to be 



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