65°W 



(^=? 



^ 



^ 



GCW 

 1 



X 



55°S 



-fe 



«C 



60° S 



% 



Figure 15. — Fourteen-day averaged currents across Drake 

 Passage at 2,750-m depth, March 1-14, 1975. 



Recovering vertical current meter (VCM) aboard RV 

 Thompson, March 1976. The VCM is a modified 

 Swallow float. It floats at a given pressure surface. As it 

 moves up and down through the water or as water flows 

 vertically past it. the impeller spins and records the water 

 movement 



o 



z 



(E 8 



O 



O 



lOf- 



II 



12 

 13- 



r 



\ \ 



Figure 16. — Fourteen-day averages of down-channel (62 T) velocity, March to October 1975. 



32 



