F/gure C-7. Trajectory of Buoy 4556. 



close to the eddy's boundary. It 

 is likely that the drogue (~58 m) 

 remained in the cold, subsurface 

 core of the Labrador Current 

 while the temperature sensor at 

 the surface was moving through 

 surface waters of various tem- 

 peratures near the eddy's bound- 

 ary. 



The track of 4555 after it left the 

 vicinity of the eddy was generally 

 northeastward, with wide fluctua- 

 tions in the filtered speeds. The 

 temperature record shows that 



78 



the buoy remained in waters 

 greater than 8°C, with most of the 

 readings in the range of 12-14°C. 

 The buoy's subsequent movement 

 is complex, with evidence of 

 eddies and meanders associated 

 with the North Atlantic Current, 

 particularly in the area east of 

 Flemish Cap. 



BUOY 4556 



Buoy 4556 (Figure C-7, C-8) was 

 deployed from an aircraft on 14 

 April (104) at 48-20. IN, 49-19.8W. 



it remained in the Ice Patrol 

 operation area for 63 days, 

 passing east of 39°W on 1 6 June 

 (167). Three days later (170), the 

 buoy stopped transmitting, al- 

 though there was no prior indica- 

 tion of a reduction in the buoy's 

 battery voltage or the number of 

 fixes per day. The drogue 

 indicator showed that the drogue 

 detached on 31 May (151). thus it 

 remained attached to the buoy for 

 48 days. 



