TM No. 327 



It is difficult to infer just ho"w representative the gradients are between 

 600 and 1500 meters, due to the eddy motion indicated in the drogue tracks 

 (figure 8). Motion at 10 and 200 meters was much more uniform vith regard 

 to direction. 



Transect 3 



Four drogues vere set at various depths and tracked along transect 3 (T3 

 in figure l). The drogue history and data sheets are included in appendix A. 

 Table U is a summajry of the drogue data obtained along T3. 



Table k. Summary of Drogue Data - Transect 3 



Current speeds were less along T3 than along T2. 



Drogue Romeo II (200 meters) was launched in the eastern part of the Tongue, 

 The drogue moved southward during the first 2k hours, executed an anticyclonic 

 loop (diameter of 1.1 kilometer) and moved northward along the 1100 meter 

 isobath for a l<-8-hour period, then moved northwesterly toward the central part 

 of the Tongue. (See figure 10.) The average speed of drogue Romeo II while 

 moving southward was 19.5 cm/sec, and the average speed along the northward 

 displacement was 10.8 cm/sec. 



Drogue 3-III (500 meters), which was launched approximately two hours after 

 Romeo II, moved southward during the first 11 hoiors of tracking} then moved 

 anticyclonically toward the north (along the long axis of the Tongue) parallel 

 but to the west of Romeo U (figure lO). The average speed of 3-III moving 

 southward was 9.3 cm/sec, and the avera^ speed, while moving northward was 8.8 

 cm/sec. 



The motions of drogues Romeo II (200 meters) and 3-III (5OO meters) were 

 the first definite indication of a net flow of water out of the Tongue. There 

 was one drogue (Zebra) on transect 1 and two drogues (Tango and SR) on 



10 



