During the two surveys and postseason cruise of 1957 there were 12 

 occupations of such sections across the Labrador Current. Table 1 

 gives the volume transport, mean temperature, minimum observed 

 temperature and heat transport found during these occupations and 

 lists the corresponding seasonal normal values for comparison. Both 

 in the table and in the text, volume transport is expressed in millions 

 of cubic meters per second, mean temperature and minimum observed 

 temperature are given in degrees centigrade and heat transport is given 

 in millions of cubic meter degrees centigrade per second. 



Table 1.— Summary of velocity sections across Labrador Current occupied in 1957 



Figure 24 shows a schematic representation of the volume transports 

 given in Table 1. In both the first and second surveys there was some 

 loss of volume transport between sections F and T whereas there is 

 normally some increase because of a contribution off the Grand Banks 

 from the northwest between these sections. In 1957 apparently the 

 contribution off the banks was larger than normal but occurred farther 

 south between sections T and U resulting in about normal or somewhat 

 larger than normal volume transports at sections F and U and subnormal 

 volume transports at section T. At section W the volume transport 

 was normal during the first survey but dropped off during the second 

 survey instead of holding steady as is normal. 



The mean temperature of the Labrador Current was decidedly below 

 normal at each of the four sections during the first survey even though 

 the minimum observed temperatures were normal or warmer than 

 normal. By the time of the second survey, however, the mean temper- 

 ature had warmed up at the two northern sections, but the two southern 

 sections were still about 0.8° colder than normal. The minimum 

 observed temperatures were lower during the second survey (except at 

 section W) with a restoration of a more nearly normal profile of the 

 Labrador Current. 



The preponderance of negative anomalies of mean temperature made 

 its effect felt in heat transport where the anomalies are all negative for 



97 



