Figure C-7 Digitized fronts 

 depicted in the SLAR Imagery 

 for: (a) 26 April; (b) 2 May. 



reported curved lines within the 

 eddy. Such lines were never 

 observed in the warm eddy water 

 in the present study but in three of 

 the four surveys (17 May ex- 

 cepted) there was a series of 

 striations (lines) north of the eddy 

 (Figure C-7). They were faint and 

 patchy, but when they were 

 present they were parallel to each 

 other and approximately paralleled 

 the northern boundary of the eddy. 

 SEASAT SAR data also showed 

 similar features, as reported by 

 Cheney(1981) and Fu and 

 Holt(1982), who suggested that 

 the striations were parallel to the 

 flow. There were no direct 

 current observations in either 

 study to confirm this. 



Following the evolution of the eddy 

 over the three-week period of 

 observation was difficult for two 

 reasons: first, the inability of the 

 SLAR imagery to provide a closed 

 boundary, and second, the 

 complexity of an eddy interacting 

 with the NAC and trapped against 

 the Grand Bank and the Labrador 

 Current. The location of the 

 northern and eastern t)oundaries 

 of the eddy was well-defined on 

 both 26 April and 2 May SLAR 

 surveys (Figures C-7a and b); 

 however, in neither survey were 

 the westem and southern bounda- 

 ries well defined. East of the 

 eddy, the boundary of the NAC 

 appeared to have moved about 30 

 km to the west during the six-day 

 interval between the surveys. 



The 9 May SLAR (Figure C-7c) 

 survey provided the most complex 

 and ambiguous images. The 

 northernmost frontal location 



60 



a 



remained neariy unchanged. This 

 survey provided the first good 

 image of the southern portion of 

 the eddy, as well as the best 

 image of the striations north of the 

 eddy. Unlike the patchy striations 



observed on the 26 April and 2 

 May surveys, they were widely 

 distributed north of the eddy. Like 

 the previous image, however, 

 they were roughly parallel to the 

 northern eddy boundary. 



