BUOY 4559 

 1987 



TEMP. 



o 



153 



isaj- 

 leal- 



80 I- 

 E0 h 

 40 j- 





 -20 (- 

 -40 I- 

 -B0 

 -80 I- 



-lael- 



-120L- 

 159 



i2a(- 



1 eat- 

 so I- 

 ea I- 

 4a t- 



CO 2B I- 



2 a 



20 I- 

 -40 I- 



-6a I- 

 -ea I- 



-laal- 



1S3 



173 1S3 139 



YEAR DATE 



203 



U-COMP. 



173 183 199 



YEAR DATE 



V-COMP. 



o 



120'— 

 153 



1B9 



173 183 199 

 YEAR DATE 



203 



Figure C-16. Temperature, U and V velocity compo- 

 nents for buoy 4559. 



when the buoy reached the vicinity 

 of the 1000m isobath, 4559 began 

 a more vigorous (30-40 cm/s) 

 southeastward movement along 

 that isobath. During this 1 1 -day 

 period (22 June - 3 July, 173-184) 

 the sea surface temperature 

 changed little. 



On 3 July (184), 4559 started to 

 move southward through Flemish 

 Pass. It then moved southward in 

 the Labrador Current along the 

 eastern edge of the Grand Banks, 

 approximately following the 

 1000 m isobath to the Tail of the 

 Banl< with speeds mostly in the 

 40-60 cm/s range and some peak 

 readings approaching 70 cm/s. 

 During this two-week period (3-17 

 July, 184-198) the surface tem- 

 perature increased about 5°C 

 (5to10°C). 



After leaving the 1000 m isobath at 

 the Tail of the Bank, 4559 rrwved 

 southward and then eastward. 

 During this period there is a data 

 gap of three days duration due to 

 communications problems within 

 the ARGOS system. Finally, the 

 track of 4559 traced a cyclonic 

 loop with a diameter of approxi- 

 mately 110 km. The surface tem- 

 perature during this period varied 

 considerably over the range of 14 

 to 18°C. 



BUOY 4553 



Buoy 4553 (Figure C-17, C-18) 

 was air-deployed on 25 June (176) 

 at 52-44N, 51-55W. It was the last 

 operational buoy deployed during 

 the 1987 iceberg season. It 

 provided position and sea surface 

 temperature data for 100 days in 

 the Ice Patrol operations area, 

 passing east of 39''W on 22 

 September (265). It was still trans- 

 mitting as of 31 December 1987. 

 The drogue sensor showed that 

 the drogue remained attached for 



88 



