58 



be required to convert water of the characteristics of the core of the 

 Irminger-Atlantic water to the condition found at 150-200 meters at 

 station 2254. The observations seem to be in error but attention is 

 called to them because no definite reason for discarding them can be 

 found. 



The Labrador Current at South Wolf Island had a volume of flow 

 of 3.3 million cubic meters per second and a mean temperature of 

 1.27° C. These figures may be compared with average values of 4.46 

 and 2.38, respectively, for the years 1928, 1931, 1933, 1934, 1935, 

 and 1936. At Cape Farewell the West Greenland Current had a vol- 

 ume of flow of 6.4 milHon cubic meters per second and a mean temper- 

 ature of 4.05° C. with a resulting northward heat transfer of 25.8 

 million cubic meter degrees centigrade per second. The averages for 

 eight occupations of this section are respectively 5.3, 4.6, and 24.4 ex- 

 pressed in similar units. 



The Ivigtut section off Arsuk Fjord, Greenland, has been occupied 

 less frequently than has the Cape FareweU section. Up until the 1936 

 post-season cruise the Ivigtut section had been occupied twice in 1928, 

 once in 1931, and once in 1933. During two of these three years the 

 volume of flow of the West Greenland Current off Ivigtut was found to 

 be greater than the volume of flow off Cape Farewell. Consequently 

 there was some doubt as to whether or not the volume of flow passing 

 the Cape Farewell section was a reUable indicator of the A^^est Green- 

 land Current. Therefore both sections were occupied in 1936 and 

 but httle difference was found between the two sections. At Cape 

 Farewell the volume of flow was 6.4 milhon cubic meters per second 

 compared with 6.0 at Ivigtut, and the mean temperature at Cape Fare- 

 well was 4.05° C. compared with 4.0° C. at Ivigtut. The resulting 

 northward heat transfer was hence 25.8 million cubic meter degrees 

 centigrade per second compared with 23.8 at Ivigtut. In the hght of 

 these results the writer is inclined toward the behef that these sections 

 give equally reliable criteria for judging the characteristics of the West 

 Greenland Current, 



In the following table are given the data coUected during the 1936 

 season and post-season cruises. The individual station headings give 

 the station number, date, geographical position, depth of water, and 

 the dynamic height of the sea surface above the reference surface used 

 in the construction of the dynamic topographic charts shown in figures 

 25-28. For stations 2048 to 2234 the sea surface is referred to the 

 1,000-decibar surface and the depth of water is the uncorrected fath- 

 ometer sounding based on a sounding velocity of approximately 1,483 

 meters per second. For stations 2235 to 2264, inclusive, the sea sur- 

 face is referred to the 1,500-decibar surface and the depth of water 

 is the sonic sounding corrected for sounding velocity but not for draft 

 (2 meters) nor for slope. Where the depths of scaled values are enclosed 



