Buoy 4530 



Buoy 4530 (Figure B-1) was 

 deployed at 1622Z on 15 April 

 (106)at51-59N. 52-OOW. It 

 provided uninterrupted data until 

 its recovery by USCGC NORTH- 

 WIND (WAGB 282) on 16 June 

 (168), a span of 63 days. During 

 ttie first four days following 4530's 

 deployment, the drogue sensor re- 

 ported drogue detachment. It's 

 likely that there was some type of 

 tangle of the tether which eventu- 

 ally freed itself. Thereafter, the 

 drogue sensor showed the drogue 

 was attached for the entire drift 

 period. 



The movement of 4530 during the 

 first twenty days after its deploy- 

 ment was characterized by a 

 sluggish (<20 cnn/s) southwest- 

 ward drift. On 8 May (129) it 

 started a persistent, but still slow, 

 northeastward movement to the 

 vicinity of the 1000 m isobath. 

 The remainder (after 29 May, 150) 

 of the trajectory was southward, 

 approximately parallel to the 1000 

 m isobath at about 20-30 cm/s. 



During its entire drift, the sea 

 surface temperature recorded by 

 4530 was less than 3°C. 



(J 



(U 



a. 



r 

 u 



a: 

 a: 



18 



16 



14 



12 - 



10 - 

 8 

 G 

 4 

 2 

 

 -2 



BLJOY 4 5 30 

 1388 



01 



\ 



z: 

 o 



o 

 u 



I 



=3 



10 



80 



60 



40 



20 





 -20 

 -40 

 -60 (- 



'lll l lll l ll ll lllllllMIII llM llI Illllli i 



123 138 153 168 



YEHR-DRY 



-80. 



\ 



r 

 u 



Q. 



z: 

 o 

 u 

 I 

 > 



108 



80 



60 



40 



20 (- 





 -20 I- 

 -40 

 -60 

 -80 



m ill I II I nil II M I I III I I I il I I I I M I I I ri I M In I ill] I I 



123 138 153 168 



YEHR-DRY 



1 1 1 

 08 



II I III 1 1 1 1 1 1 1 II 1 1 1 1 1 1 1 II 1 1 1 1 1 1 1 1 II 1 1 1 II 1 1 1 1 1 II I II 1 1 1 1 1 1 1 



123 138 153 168 



YERR-DRY 



Figure B-1 a. Time history of sea surface temperature, U, and V 

 velocity components (filtered) for 4530. 



64 



