76*W 



ACN 



- 40*N 



^ 40*N 



Figure 20.1.— Positions of water masses, surface fronts, and continuous plankton recorder samples during 1976. SH = Shelf Water, SL = 

 Slope Water, ST = Gulf Stream Water, SS = Sargasso Sea Water, WE = warm eddy (after I'.S. Na\->' Experimental Ocean Frontal 

 Analysis 1976), — = lO-mi sample. 



342 



