which has characterized the last several years. The volume transport 

 of the West Greenland Current was computed to be 5.66 with a mean 

 temperature of 4.74 compared to seasonal normals of 4.55 and 4.65 

 respectively. The resulting heat transport of 26.85 was 5.69 above 

 the seasonal normal. On the basis of constant mean temperatures of 

 3.2° and 5.5° for the East Greenland Current and Irminger Current 

 components of the West Greenland Current the volume transport 

 found was made up of 1.87 and 3.79 for these components, being 0.19 

 and 0.92 gi-eater than the respective seasonal normals. Once more the 

 net transport across the complete section was found to be north- 

 westerly, the amount being 1 .24. Again the reference surface selected, 

 1500 decibars, appears to be about as good as any single level although 

 it would appear that the motionless surface may have been at about 

 1,700 meters on the Labrador side. The 1500-decibar surface was 

 accepted in constructing the picture of the circulation in the Labrador 

 Sea shown in figure 18. 



Again in 1955 samples were taken at all levels at all stations com- 

 prising the South Wolf Island-Cape Farewell section for subsequent 

 determination ot the concentration of total phosphorus. The dis- 

 tribution found in this section is shown in figure 22. In 1955, as in 

 previous years when total phosphorus has been measured along this 

 section, there were slight maxima at intermediate depths just seaward 

 of the Labrador Current and just seaward of the West Greenland 

 Current. Examination of the total phosphorus-density relationship 

 shows station curves characteristic of the Labrador Current only over 

 the Labrador shelf as far out as station 6019. The constant phos- 

 phorus value approached in these curves is about 1.0 Mga/L compared 

 with 1.15 in 1954 and 1.30 in 1952. In the central Labrador Sea the 

 1955 stations were uniformly lower in phosphorus than in earlier 

 observations and the deep maximum occurring at a potential density 

 of about 27.75 was about 1.1 compared with about 1.2 in 1954. The 

 phosphorus distribution found in 1955 had smaller variations from 

 place to place than previously found and the highest 1955 phosphorus 

 value was 1.30. This occurred at station 6030 which was the only 

 central Labrador Sea station that departed much from the average 

 phosphorus-density relationship. The results of the measurements 

 of total phosphorus concentration are given in tabular form at the end 

 of the usual table of oceanographic data. 



SUMMARY 



1 . The surface chculation in the Grand Banks region found during 

 the 1955 ice patrol season has been discussed in the light of three 

 dynamic topographic surveys, two of which were confined to the north- 

 eastern slope of the Grand Banks north of the latitude of Flemish Cap. 



78 



