(except for the 200-meter level) lower salinities were largely compen- 

 sated for by lower temperatures. In the mixed water the principal 

 difference is in the salinity which was less than the 8-year average 

 in 1954. The shape of the characteristic curve for Atlantic Current 

 water was materially different in 1954 from that of the 8-year average. 

 The bulge toward lower salinity at a temperature of about 6° was 

 markedly less. This is probably because more of the 1954 stations 

 were farther into the Atlantic Current than is usual and the bulge is a 

 feature of the outer margins of this current in the Grand Banks 

 sector. The lower densities were the result of higher temperature, 

 with the temperature effect outweighing the effect of higher than aver- 

 age salinities down to about 1,000 meters. Below 1,000 meters in 

 the Atlantic Current the salinities found in 1954 were about average. 

 The second and third surveys each contained a number of stations 

 where the water was atypical and irregularly intermediate between 

 Atlantic Current water and mixed water. In the second survey the 

 warm water thrust toward the southwestern edge of the Grand Banks 

 was made up of these stations. The third survey had these stations 



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Figure 23.— Fluctuations in the activity of the North Atlantic eddy during the 

 years 1947-54 as indicated by the changes in the difference in sea level Bermuda 

 minus Charleston. 



96 



