the neighborhood of 175°E. Surface temperatures ranced from 16° to 21'' 

 between 4.5°N and AO°N giving a slope of 5° for 5'' of latitude. The 

 eastern and western profiles were roughly parallel. There was a wr.rm 

 zone of 25° in the vicinity of 38°N, and a cold zone viith a ter.perature 

 of 13° in the northvie^t'^rr) corner of the area. The zones of 17° - 19° 

 water had moved nortm^ard 2'-' of latitude from their position of the pre- 

 vious month and were in che neighborhood of -i+4.°K. This represents a 

 shift of 1° to 2° of latitude northward over the previous year. 



The temperatures at the SO-meter level were 5° - 6'^ lower than those 

 at the surface, and those at ICO meters and 200 meters were each one 

 degree lower. At each level the slope was 3^ ef temperature to ^° of 

 latitude, and the eas^-west profiles wore roughly par-'.llol. 



Specific gravity values in the surface waters were 2^50 in the north- 

 western part of Jlrea III ani 2500 at the n'^rthern edge of /irea II. 

 Throughout the whole area the value of 2550 followed roughly along the 

 parallel of A3°N. Across Areas II and III there was highly saline water 

 of 2700 north and south of the parallel of 38^11. The SO-neter, 100-meter, 

 and 200-meter levels all shov;ed the S'lme tendency toward higher chlorini- 

 ties in the southern part of the area and lower values to the northeast. 



September 



During this month there were seven vessels in opcrati"n, all of them 

 between ^0° and 45°N, Sui'faco vjater temperatures ranged from 14.° to 21°, 

 giving a slope of 7*^ of -cemperaturt' in 5" of latitude. The prr files 

 were roughly parallel east and v;e&t. The zr-ijes ^^ 17° - 19° water showed 

 a tendency to move somewhat snuthiffard in this month, and were located in 

 the vicinity of /|,3°N. In the neighborhood of 4-5°N, where the water tem- 

 perature had been 16° in the preceding month, temperatures of 14" or 15° 

 appeared in places. 



Temperatures at the 50-meter level were 5° - 6° below those at the 



surface and ^vent down to 9° in the north and 15° in the south' ;rn part of 



the area. The temperature profiles were roU(_hly parallel to the ecist 



and west on both sides of a comple:: formation in the vicinity of the I80th 

 meridian. 



Temperatures at the lOO-meter level were 1° lower than those at the 

 surface, and those at the 200-raeter level were 2° lower than the 100-meter 

 level. 



At all levels there vras a tendency for lower specific gravities to 

 accompany lower temper a tares, but in general the values were higher in 

 the east and lower in the v/est. 



First Ten Days of October 



Six vessels were operatin^^ during this period, most of them between 

 AO°N and 45°N with a few of them in the neighborhood of 39°N. The surface 

 water temperatures ranged from 15° to 13° giving a slope of 3° f'^r 7° of 

 latitude, and the east-west profiles were roughly parallel. TVie zones of 



154 



