Buoy 4563 



Buoy 4563 (Figure B-4) was 

 deployed at 1719Z on 19 May 

 (140) at 53-OON, 52-05W. It was 

 recovered by NORTHWIND on 16 

 June (168), 29 days after its 

 deployment. The drogue sensor 

 accurately reported ttiat drogue 

 was attached for the entire drift 

 period. 



The first eight days of 4563's drift 

 were marked by vigorous (40-50 

 cm/s) southward motion along the 

 1000 m isobath. On 27 May (148) 

 it moved southwestward into 

 shallower water, whereupon four 

 days later, its motion slowed 

 substantially (<20 cm/s). The 

 remainder of its drift was charac- 

 terized by sluggish movement in 

 the vicinity of 50N, 51-30W. 



The temperature record from 4563 

 is unremarkable, with a slow 

 increase in temperature from 0- 

 3°C over the 29 day drift (0.1 °C/ 

 day). 



BLJOY 4 56 3 

 1988 



en 

 u 

 -0 



Q. 



U 



12 



18 

 16 

 14 

 12 

 10 



e 



s 



4 

 2 







-2 



142 



157 

 YERR-DRY 



I I I I I I I I I I 



80r 



[4 2 



I I I I I 



157 

 YERR-DRY 



I I I I I I 



en 

 \ 



21 

 U 



o 

 o 

 I 

 > 



80 



60 



40- 



20 







-20 

 -40 

 -60 

 -8 



[42 



I I I I I I I I I I I I I I I I I I I I I I I I 

 157 



YERR-DRY 



Figure B-4a. Time history of sea surface temperture, U, and V 

 veiocity components (filtered) for 4563. 



70 



