Figure C-9. Trajectory of Buoy 4560. 



The temperature record during 

 the period that 4556 was moving 

 in the anticyclonic eddy (125-146) 

 cannot be easily explained. First, 

 the temperature increased from 

 2-1 0°C, then it decreased rapidly 

 to 5-6°C. It is possible that the 

 low temperature recordings from 

 19 May to 8 June (139-159) are 

 the result of a sensor malfunction. 

 However, other than the loss of 

 the drogue on 30 May (150), 

 there is no evidence of a buoy 

 malfunction. 



80 



On 8 June (159) the temperature 

 record shows an increase from 

 8.2 to 1 1 .8°C on successive 

 satellite passes (about three 

 hours apart). Eight days later 

 (167), 4556 crossed east of 

 39°W. On 19 June (170), 66 

 days after its deployment, 4556 

 stopped transmitting. 



Buoy 4556 was recovered by the 

 Irish Navy and returned to Ice 

 Patrol in August 1988. It was 

 severely damaged and could not 

 be returned to service. 



BUOY 4560 



Buoy 4560 (Figure C-9, 0-10) 

 was air-deployed on 6 May (126) 

 at 49-OON, 50-36W. It provided 

 data in the Ice Patrol operations 

 area for 73 days, passing east of 

 39''Won17July(198). The 

 drogue remained attached for the 

 entire period, detaching on 17 

 October (290) 1 75 days after 

 deployment. The buoy continued 

 to transmit data for the remainder 

 of the calendar year. 



