lag of 11.4 months where there were eight cases of positive sign and two 

 negative. It must therefore be concluded that the very good correlation 

 between the position of the cold wall as determined during the 27 prewar 

 surveys and the Charleston-Bermuda tide-gage data was fortuitous 

 and not real, and we must find other means of predicting the position 

 of the cold wall. 



In the more detailed examination of the circulation in the upper 1,000 

 meters with respect to the fluctuations in the Labrador Current par- 

 ticularly, certain sections have been occupied as frequently as operational 

 considerations permit. Tentative normal seasonal variation relation- 

 ships have been derived for some of these sections where the number of 

 occupations has been sufficient and the distribution of the dates of the 

 occupations has been satisfactory. Of these there were occupations 

 of sections F, T, U, and W during the two 1957 surveys, and the com- 

 ponent sections of the Bonavista triangle (NW, SW, SE) during the 

 postseason cruise. An additional section across the Labrador Current 

 off South Wolf Island, Labrador, repeated during the 1957 postseason 

 cruise, has usually been occupied at about the same time of year and 

 for this section average values, rather than normal seasonal variations 

 have been used for comparison. The location of the section F is from 

 the Grand Banks to Flemish Cap at the parallel of 46°45' N. Section 

 T runs southeasterly from about 46°20' N. 49 W W. Section U runs 

 easterly from the Grand Banks near the 45th parallel. Section W runs 

 south from the Grand Banks along the meridian of 50° 15' W. 



95 



