Figure C- 15. Trajectory of Buoy 4559. 



same period (17-27 May, 137- 

 147), the temperature record 

 shows considerable variability 

 over the range 10-17°C. At the 

 end of this period, 451 1 turned 

 aboiptly to the northwest and 

 slowed substantially with the 

 typical speeds varying over the 

 range of 20-70 cm/s. It is likely 

 that this motion was due to a 

 northwestward-projecting mean- 

 der of the North Atlantic Current 

 near Flemish Cap. During this 

 entire period, the temperature 

 remained stable near 14°C. 



BUOY 4559 



Buoy 4559 (Figure C-15, C-16) 

 was air-deployed at 49-40N, 50- 

 52Won6 June (157). It provided 

 data in the Ice Patrol operations 

 area for 62 days, during which the 

 drogue remained attached. On 6 

 August (218) it appears that the 

 buoy was recovered by a vessel. 

 The temperature showed an 

 abrupt 6°C increase to 23.8°C, 

 accompanied by an indication of 

 drogue detachment. Shortly 

 thereafter, the buoy ceased 

 transmitting. 



The first 1 6 days after deploy- 

 ment were characterized by a 

 sluggish (< 20 cm/s) movement to 

 the southeast, with the sea 

 surface temperature remaining in 

 the 2-5°C range. On 12 June 

 (163), six days after its deploy- 

 ment, 4559 was inspected by the 

 Ice Patrol field party aboard 

 TAMAROA at 49-39.9N, 50- 

 32. 8W. The drogue was properly 

 deployed, but the parachute had 

 not cut and was fouled around the 

 wooden pallet. The parachute 

 was cut free. On22 June (173), 



<^7 



87 



