The western stubj, larea Bl, is transitional betwoen the area of low ice 

 potential and low stability to the west and the area of high ice poten- 

 tial and moderate stability to the east* Area B2 comprises a small 

 area of low stability between the more stable waters to the west and 

 easto A speculative cause for the presence of this area is the cold 

 cyclonic current which is presumed to sat eastward along the coast 

 between 1^2° and 138°W» 



Area C of figure 5 is a small area in which the stability is 

 moderate while the ice potential is greate This area contains water 

 which is similar to that of the central Arctic in that potential ice 

 thickness is great but is distinguished from that area because stability 

 has been increased by sixrface runoff© 



Area D in figure 5 Is similar to area C in h3.ving moderate stability 

 and high ice potentialo It is transitional between the mid~Arctic area 

 and the inshore area E described below« 



Area E in figure 5 is unique in Slaving extremely high stability 

 along with high ice potentials The surface water of this area contains 

 much runoff water e'ven as far as 150 miles offshore j hence it is highly 

 stratifiede Surface salinities are below 2l(°/oo in "^ost of the area. 

 Due to the stratifications one© the heat loss is large enough to cause 

 ice formation^ a small amount of further convection increases the ice 

 thickness greatly o 



Area F in figure 3 resembles area A In having low ice potential 

 and low stabilit3''s, ,' Hor^ever^, a typical T~6 diagrsjw from area F should 

 not be expected to be identical with one from area A, since the ice 

 potential calculation uses the average values of temperattrrej salinity, 

 and density in the water column rather than those at each individual 

 level. The fact that two areas are similar in their capacity fcr ice 

 formation does not necessarily connote their similarity in other respects. 

 As indicated abo-ve^ the reason for the existence of area F is not known. 



Area G in figure 5 is like areas C and D in having high ice potential 

 and moderate stability. It contains some surface runoff like the other 

 two similar areas. Because of its small size^ the area of very high 

 stability near DeSalis Bay^, shown in figvire li, has been ignored in de- 

 lineating area G, 



The remaining area in figiu^e 5 is area Hj' which is like area B 

 in having lox<r stability and high ice potentials Its presence in the 

 southern part of Amundsen Gulf can be inferred from historical ice re- 

 ports. As summarized in figures 6 and 8 thrcwgh 12 in H.O. Technical 

 Report 25 (1955) summer ice conditions in the southern part of Amundsen 

 Gulf are usually worse than those in the northern part of the gulf. This 

 may possibly be an area of upwelling in which cold subsurface water re- 

 places the war-m layer that causes higher stability in area G, 



