Figure 23. 



65N 



65W 



60W 



55W 



SOW 



60N 



55N 



SON 



6SN 



— 60N 



— 55N 



SON 



3/10 or greater sea 

 ice concentration 



(Redrawn from Joint 

 Ice Center, 1987) 



1 972—82 mean 

 sea ice edge 



(Redrawn from Naval 

 Oceanography Command, 1986) 



60W 



55W 



SOW 



— 4SN 



4SW 



39 



