Certain sections across the Labrador Current in the Grand 

 Banks region have been repeatedly occupied in the process of 

 making current sui-veys during the ice patrol season over the 

 period of years beginning with 1934 and the accumulated data 

 form the basis for establishing seasonal normals for this part of 

 the year, and a means of comparing the Labrador Current found 

 during any survey with that found during another. The sections 

 have been designated T, U, and W which are located as follows : 

 section T running southeasterly from about 46°20' N., 49^00' W. ; 

 section U extending eastward from the Grand Banks at about the 

 45th parallel; and section W running southerly off the Grand 

 Banks at about the 50th meridian. In bulletin number 36 of this 

 series, tentative normal seasonal variation cui'ves were published 

 for the volume of flow and the mean temperature of the Labrador 

 Current at each of these sections. In the following discussion, 

 the units used in volume transport are millions of cubic meters 

 per second, mean temperature and minimum observed tempera- 

 ture are given in degrees Centigrade, and the heat transport is 

 expressed in units of millions of cubic meter degrees Centrigrade 

 per second. 



Only the first and third surveys included occupations of sec- 

 tions T, U, and W. However, other sections located northward of 

 section T and for which normals have not been established were 

 occupied during the second and third cruises and on the post- 

 season cruise. On the second cruise the triangle off Cape Bona- 

 vista was occupied and the sections forming its sides have been 

 designated NW, SW, and SE to indicate the northwest, southwest, 

 and southeast sides respectively. A section running easterly from 

 the Grand Banks to Flemish Cap was occupied and has been called 

 section F and two sections running northeasterly from the Grand 

 Banks intermediate between section F and the Bonavista triangle 

 have been called G and H. On the third cruise sections F and G 

 were occupied in addition to T, U, and W and on the post-season 

 cruise the Bonavista triangle was occupied in addition to the sec- 

 tion across the Labrador sea from South Wolf Island to Cape 

 Farewell, Greenland. No seasonal variation normals are avail- 

 able for the Labrador Current off South Wolf Island, but the sec- 

 tion has been occupied in the summer time in 14 of the 24 years 

 beginning .with 1928 (see p. 89, Bulletin No. 36 of this series) . In 

 the absence of normals for this section, the values found in 1951 

 have been compared with the averages of these 14 occupations. 



In table 1 the results obtained in 1951 have been summarized 

 and compared with normal values where they are available. From 

 table 1 it is apparent that during both the first and third surveys 

 the volume of flow of the Labrador Current in the Grand Banks 



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