Figure C-12 Distribution of temperature at 58 db from tiie 

 first-phase hydrography (27 April - 3 l\1ay) and the tracit of 

 buoy 4542. The approximate position of the buoy at the 

 beginning of each day is indicated. 





Figure C-13 Temperature 

 distribution along the 

 transect CD drawn 

 on Figure 11. 



Subsequent History of the Eddy 



The track of the buoy left in the 

 eddy at the conclusion of the 

 hydrography (#4557 on Figure C- 

 18) provides the only data on the 

 eddy after the conclusion of the 

 survey. From 12 May to 9 June, it 

 completed three anticyclonic revo- 

 lutions of the eddy. Its motion 

 indicates an eddy with a diameter 

 of about 80 km with a southeast- 

 ward translation of 1 1 km over 

 the 28-day period, about 4 km/ 

 day. During the period the surface 

 temperature was mostly in the 1 1- 

 13°C range, but there were 

 several intervals when it de- 

 creased substantially. For ex- 

 ample, for a three-day period (31 

 May-2 June) the temperature 

 decreased to 5-8°C. This sug- 

 gests that the buoy was close to 

 the eddy boundary. The drogue 

 was moving persistently within 

 eddy water at 58m, while the hull 

 was at times moving through thin 

 cold features. 



On 6 June, IIP attempted a SLAR 

 survey of the region to relocate 

 and map the eddy, but the SLAR 

 failed. On 9 June the buoy 

 apparently departed the eddy. 

 The anticyclonic motion ceased 

 and the surface temperature 

 decreased to 6-8°C for a period of 

 a week. 



Figure C-14 Comparison of the first- 

 phase buoy tracks and the features 

 from the 26 April SLAR survey. 



66 



