174 



DISCOVERY REPORTS 



250 m., and is separated from the warm water below it by a discontinuity layer, within 

 which the temperature and salinity increase rapidly with depth. Figs, i and 2 show 

 the vertical distribution of temperature and salinity in a section through the sur- 

 face 1000 m. of water along longitude 80° W, from 60 to 67° S. The position of the 



LATITUDE SI S 



STATION 989 



250i 



500m 



750m 



Fig. I. Section I, distribution of temperature (° C). 



LATITUDE 615 



STATION 989 



£50 



500« 



750 



Fig. 2. Section I, distribution of salinity. 



section is shown as section I in Fig. 1 1 (p. 191). The observations on which the sections 

 are based were made in October, when the hydrological conditions had hardly changed 

 from those of winter. 



In Fig. I the Antarctic surface water is seen at the southern end of the section as a 



