BUOY 4554 



Buoy 4554 (Figure C-3, C-4) was 

 air-deployed at 50-OON, 50-40W 

 on 25 March (84). It transmitted 

 position and temperature data for 

 65 days, failing on 28 May (148). 

 The buoy's battery voltage and the 

 number of fixes per day were 

 normal until failure. The drogue 

 remained attached during the 

 entire drift period. 



After its deployment, 4554 moved 

 southeastward, approximately 

 following the 1000 m isobath. 

 Over this period, the filtered buoy 

 speeds varied over the range of 5 

 to 30 cm/s. The temperature 

 record is unremarkable, with a 

 slow increase in temperature of 

 from to 6°C over the 65 days 

 (0.1°C/day) of the buoy's life. 



At Sackville Spur, 4554 turned to 

 the northeast, after which it made 

 an anticyclonic loop (-50 km di- 

 ameter). It failed shortly thereafter. 



BUOY 4554 

 1987 



TEMP. 



o 



IS 

 IE 

 M 

 12 



le 

 e 



6 



4 



2 - 



a 



-2 



_i_ 



_i_ 



as 



9S 



ME I2S 



YEAR DATE 



136 



156 



CO 



i 



o 



86 



128- 

 100- 



80 



60 



48 



20 



O -^^ 



-40 - 

 -E0 - 

 -88 



-100- 



-i2e 



86 



18E 



116 126 



YEAR DATE 



136 



156 



cn 



V-COMP. 



96 



116 126 



YEAR DATE 



136 



156 



Figure C-4. Temperature, U and V velocity comporients 

 for buoy 4554. 



75 



