The area of Labrador Current entrainment 

 into the eastward moving North Atlantic Current 

 had moved 110 to 150 km further south than it 

 was in April. The eastward component accounts 

 for the main flow of the Labrador Current wliile 

 to the south the dynamic height chart (fig. 4) 

 and water mass properties reveal a weak and 

 indistinct flow of the Labrador Current. 



Third Cruise (13 June-14 July 1973) 



In June and July only a brief general survey 

 was made (fig. 5). In its place three intensive 

 surveys were made of a 110 km square centered 

 at 44°20'N and 48°30'W (figs. 6-8). The surveys 



covered the region where the Labrador Current 

 was entrained by the North Atlantic Current 

 system. The major feature here, the reversal of 

 the Labrador Current, shifted to the south 50km 

 from survey one to three. This was approxi- 

 mately 1.8 km/day. The detail seen in the dy- 

 namic structure in these surveys was great 

 compared to the structure displayed by the more 

 conventional survey taken between Intensive Sur- 

 veys II and III. The general pattern matches 

 the northern portion of Intensive Survey III 

 well. One can only conclude that the scales of 

 motion seen are highly dependent on sampling. 



