In section B, which lies 40 degrees to the west of section A, 

 the large temperature gradient indicative of the convergence 

 was found much farther north at 60°24'S. The observations 

 are more closely spaced in this section and consequently 

 give a more variable temperature structure. The tempera- 

 ture gradient at the convergence on this section is about 

 2.0 degrees C. in 15 miles. 



Sections C-l, C-2, and C-3, which are all in one locality, 

 give indications of seasonal changes in the surface tempera- 

 tures at the convergence. In section C-l the convergence was 

 found early in the season at 62°46'S with a mean temperature 

 of about 1.8 degrees C. This is the most striking break in 

 temperature found. The decrease is 2.5 degrees C. in a 

 distance of 10 miles. Section C-2 taken 54 days later shows 

 the convergence at 63°50'S with a mean temperature of 2.7 de- 

 grees C. This indicates that the convergence had moved south 

 about 64 miles and the temperature at the convergence in- 

 creased by 0.9 degree C. The temperature gradient de- 

 creased to 1.8 degrees C. in 30 miles. The third section in 

 the same longitude shows that the convergence again moved 

 north to about 63°20'S with a mean temperature of 2.8 degrees 

 C. This northerly displacement amounts to 30 miles in a 

 period of 14 days. The surface temperature gradient here 

 is 2.8 degrees C. in approximately 80 miles. A summary of 

 the surface temperature characteristics at the convergence 

 is contained in table 7. 



28 



