2l6 



DISCOVERY REPORTS 



LATITUDE 



STATION NO 



- ISOOm 



2500m 



- 3500 m 



4000» 



- 4SOOm 



Text-fig. 21. Distribution of temperature (° C.) between 6o° S. and 35 S. in the region of the 

 Greenwich Meridian, May-June 1936 (see Text-fig. \b for station positions). 



Water decreases with depth to a minimum value increasing again to a maximum in the Warm Deep. 

 The boundary between them can be taken to lie midway between these two depths (Deacon, 1933). 

 At St. 2533 the minimum temperature in the Antarctic Intermediate water was 1-91° C. at 400 m. 

 and the maximum temperature in the Warm Deep Layer 2-33° C. at 790 m.; the boundary at this 

 station is therefore about 600 m. At other stations on the o° Line the depth of the Antarctic Inter- 

 mediate water was estimated in the same way and found to lie at 1620 m. at St. 2532; 900 m. at 

 St. 2023; 1250 m. at St. 2024; 800 m. (?) at St. 1776; 1400 m. at St. 1775; 900 m. at St. 2387 and at 

 approximately 1500 m. at St. 2386. 



(b) Warm Deep Water, with its principal component of movement directed south lies below the 

 Antarctic Intermediate Water at considerable depths in the Tropical, Sub-Tropical and Sub-Antarctic 



