BUOY 4530 



Buoy 4530 (Figure 

 B-1) was deployed at 1530Z 

 on10April{100)at4700.0°N, 

 4720.2°W. It remained within 

 the International Ice Patrol 

 operations area for 221 days, 

 passing east of 39°W on 17 

 November (321). The drogue 

 sensor indicated that the 

 drogue was attached through- 

 out its operations period. 



Buoy 4530 

 drifted through Flemish Pass 

 and then southward in the 

 Labrador Current until day 

 114. Speeds in the Flemish 

 Pass area ranged from 

 9 cm/s to 52 cm/s. Tempera- 

 tures increased from -1.5°C 

 to 0.4°C while the buoy trav- 

 eled southward in the Labra- 

 dor Current. Buoy 4530 be- 

 gan a series of cyclonic loops 

 between days 115 and 214. 

 Temperatures in the eddies 

 varied between 0.1 °C and 

 2.2°C. Speeds during this pe- 

 riod (days 115 to 214) were 

 0.5 cm/s to 58 cm/s. Under 

 the influence of the North At- 

 lantic Current, buoy 4530 

 drifted eastward (days 215 to 

 225) and then began a series 

 of complex loops unti I day 303. 

 During this time frame (days 

 21 5 to 303) the temperatures 

 ranged from 11°C to 18°C, 

 and buoy drift speed ranged 



Page 52 



from 5 cm/s to 1 1 6 cm/s. 

 Buoy 4530 looped northward 

 and then drifted out of the Ice 

 Patrol operations area on 17 

 November (day 321). The sea 

 surface temperatures varied 

 from 1 1 °C to 1 3°C, and buoy 

 speeds ranged from 12 cm/s 

 to 118 cm/s during this last 

 segment. 



BUOY 9877 



Buoy 9877 (Fig- 

 ure B-2) was deployed at 

 1826Z on 10 May (130) at 

 4349.0°N,4913.0°W. It failed 

 within the Ice Patrol opera- 

 tions area on 23 July (204). 

 The drogue sensor indicated 

 that the drogue was connected 

 throughout its operational 

 period. 



Buoy 9877 

 drifted along the 200-m con- 

 tour paralleling the Grand 

 Banks at speeds of 7 cm/s to 

 27 cm/s from day 130 to day 

 1 63, with the exception of days 

 1 50 to 1 58, where it completed 

 a small cyclonic gyre. During 

 this period (days 1 30 to 1 63) 

 the temperatures increased 

 from .4°C to 5°C. Buoy 9877 

 traveled south until day 169, 

 east until day 174 and then 

 headed in a general northern 

 direction until it failed on day 

 204. The temperatures ranged 

 from 5°C to 1 0°C on its south- 



ern leg, 10°C to 16°C on its 

 eastern leg, and remained at 

 14°C±2°C until day 204. The 

 speeds ranged from 20 cm/s 

 to 45 cm/s on its southern and 

 eastern legs, from 9 cm/s to 

 20 cm/s on days 175 to 192, 

 and 0.4 cm/s to 5 cm/s on 

 days 193 to 204. 



BUOY 4561 



Buoy 4561 (Fig- 

 ure B-3) was deployed at 

 1346Z on 8 June (159) at 

 4700.0°N, 4733.0°W. It re- 

 mained within the Interna- 

 tional Ice Patrol operations 

 area for 66 days, departing 

 to the east of 39°W on 13 

 August (225). The drogue 

 sensor indicated that the 

 drogue was connected 

 throughout its operational 

 period. 



Buoy 4561 

 drifted southward in the 

 Labrador Current along the 

 1000-m contour at speeds of 

 20 cm/s to 68 cm/s until day 

 174. Temperatures gradually 

 increased from 1 °C to 7°C from 

 days 159 to 174. The North 

 Atlantic Current drifted buoy 

 4561 to the east for the next 3 

 days andthen to the northeast 

 from days 1 77 to 208. On day 

 209 the buoy began a series 

 of anticyclonic gyres (3 total) 

 while heading toward the 



