- I.O°C 



o°c 



300 m 



(a) Typical Temperature 

 Profile Section 



3IOm 



320 m 



330m 



340 m 



150 m 



200 m 



(b) 



Section of Profile 

 Recorded at High Gain 



250 m 



300 m 



r'350m 



O-OI-C 



o.i-c 



Figure 3. Vertical profile of temperature under T-3 (84°38'N, 128°21.6'W, 

 19 March 1969). Shaded section of profile (a) shown as observed 

 in profile (b) to left. 



469 



