northeast until it departed the 

 operations area on day 225. 

 While heading to the north- 

 east the buoy drifted at a wide 

 range of speeds including 1 20 

 cm/s on days 200 and 201. 

 The temperatures gradually 

 increased from 10°C to 16°C 

 during days 174 to 225. 



BUOY 9878 



Buoy 9878 (Figure 

 B-4) was deployed at 1215Z 

 on8June(159)at5100.0°N, 

 5135.0°W. It remained within 

 the Ice Patrol operations area 

 for 134 days, passing east of 

 39°W on 20 October (293). 

 The drogue sensor indicated 

 that the drogue was connected 

 until 2300Z, 6 October (279). 



Buoy 9878 

 drifted southward in the La- 

 brador Current through Flem- 

 ish Pass until 14 September 

 (257). As the buoy drifted 

 southward, the temperatures 

 and buoy speeds varied from 

 1 °C to 20°C and 2 cm/s to 80 

 cm/s respectively. During this 

 southward drift (days 232 to 

 247), the buoy completed a 

 cyclonic gyre. Speeds during 

 this period were 1 cm/s to 45 

 cm/s, and temperatures were 

 15°Cto20°C. After day 257, 

 the buoy began to drift to the 

 east under the influence of 

 the North Atlantic Current. 



During this period (days 257 

 to 293), the buoy drift was 

 unremarkable. Speeds 

 ranged form 9 cm/s to 100 

 cm/s with the greatest speeds 

 occuring when the buoy was 

 located directly south of Flem- 

 ish Cap. The temperatures 

 varied from 19°Cto23°C. 



BUOY 4542 



Buoy 4542 

 (FigureB-5) was deployed at 

 1740Z on 22 June (173) at 

 4859.9°N, 4949.7°W. It re- 

 mained within the Ice Patrol 

 operations area for 53 days, 

 departing to the north of 52°N 

 on 14 August (226). 



Buoy 4542 

 drifted eastward parallel to 

 the 200-m contour to the 

 north of Flemish Cap (day 

 197). The speeds and tem- 

 peratures along this drift 

 ranged from 1 2 cm/s to 40 

 cm/s and 2°C to 7°C respec- 

 tively. After day 197, buoy 

 4542 drifted toward the north- 

 west from days 204 to 218. 

 The buoy completed a small 

 cyclonic gyre and then contin- 

 ued to drift to the northwest 

 until it drifted north of 52°N 

 on 14 August (226). As buoy 

 4542 began drifting toward 

 the northwest, the sea 

 surface temperature jumped 

 from 7°C to 12°C and re- 



mained at 12°C until day 207 

 when it dropped to 9°C and 

 fluctuated ± 2°C until drifting 

 out of the International Ice 

 Patrol operations area. The 

 drifting speeds of buoy 4542 

 on day 1 97 gradually rose from 

 12 cm/s to 57 cm/s on day 

 201 , and then gradually fell to 

 9 cm/s on day 215, only to 

 climb to 21 cm/s before drift- 

 ing north of 52°N. 



BUOY 11830 



Buoy 11830 (Figure 

 B-6) was deployed at 1715Z 

 on 23 June (1 74) at 4735. 1 °N, 

 5234.8°W. It failed within the 

 International Ice Patrol opera- 

 tions area on 30 September 

 (273). Buoy 11830 did not 

 have a temperature sensor. 



Buoy 11830 

 remained in the immediate 

 vicinity of Newfoundland, 

 Canadathroughoutitsdeploy- 

 ment. Its drift path was com- 

 plex but unremarkable. Buoy 

 drift speeds reached a maxi- 

 mum of 28 cm/s, but for the 

 most part the buoy speeds 

 remained in the single digit 

 and low teen range. 



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