Grand Banks for this occupation of the section are given below in 

 comparison with similar (juantities for earlier occupations: 



E C E+C 



Heat Mean Heat Mean Heat Mean 



transport temperature transport temperature transport temperature 



1938 312. 13.0 



1050 779. 13.4 



1958 159. 12.1 447. 13.5 606. 13.1 



1960 37. 8.8 521. 13.0 558. 12.6 



The lower mean temperature found thu'ing this occupation is noted as 

 well as the fact that the 19G0 measurements were made earlier in the 

 spring. Although the Atlantic Current extends to considerable depth, 

 since the highest velocity occurs in the upper layers and the heat trans- 

 port and mean temperature are weighted according to velocity dis- 

 tribution seasonal changes in temperature in the upper layers cannot 

 be disregarded and at this writing the significance of seasonal changes 

 in heat transport and mean temperature cannot be accurately assessed 

 in consideration of the above tabulated values. 



From the 14 stations (7294-7307) which were located south of 

 41 ° X., during the fu'st survey 53 observations from the water beneath 

 the Atlantic Current were examined for potential temperature- 

 saliriity relationship and a curve representing them has been shown as 

 a solid line in figure 38. Because of the small number of observations 

 the curve has uncertainties, but at potential temperatures above 

 about 2.6° it departs toward lower salinities from the curve shown by 

 Bradshaw and Schleicher ^ for the deep water west of Bernuida. At 

 lower potential temperatures there is no significant difference. The 

 broken line in figure 38 is taken from Bradshaw and Schleicher. 

 Fourteen observations from the deeper water beneath the Atlantic 

 Current, made during the 1958 occupation of this section are shown as 

 cii'cles in figure 38. 



A number of sections across tlie Labrador Current have been 

 repeatedly occupied in connection with the routine current surveys of 

 the Grand Banks region and on the postseason cruises. The locations 

 of these sections are as follows: Sections XW., SW., and SE. are the 

 northwestern, southwestern and southeastern sides of the Bonavista 

 triangle which is defined by its corners located at 50° X'., 49° W.; 

 47°20'X^, 50° W., and just off Cape Bona.\4sta, X'ewfoundland; 

 Section H is rougldy parallel to SE. and extends northeasterly from 

 about 47°10' X., 49°15'W.; section G extends northeasterly from 

 about 47°10' X'., 48°40' W. ; section F2 is an east-west section between 

 the Grand Banks and Flemish Cap at the parallel of 47°15'X'^.; 

 section F is similar to Fo but about 30 miles farther south; section T 

 extends southeasterlv from al)out 46°20' X"., 49° W.; section U ex- 



• Bradshaw, Alvin L., and Karl E. Schleicher "A Conductivitj^ Bridge for the Measuiement of Salinity 

 of Sea Water" Woods Hole Oceanographic Institution Reference Xo. 56-20. Unpublished Manuscript. 



59 



