30 



DISCOVERY REPORTS 



maximum effect at St. WS 484, where an intermediate maximum temperature of 

 0-25° C. was found at 150 m. At the other stations in this section only rudimentary 

 traces of intermediate maxima are found. The proportion of Antarctic bottom water in 

 the depths below 150 m., besides increasing normally with depth, also increases towards 

 the coast of Trinity Peninsula. 



The vertical sections of the stations at the south-west end of the strait are shown in 

 Figs. 36-8. The surface temperature at St. WS 488, close to Brabant Island, is but 



STATION 



LIVINGSTON I. 



WS483 



WS4B4 



WS485 



W5486 WS467 



TRINITY PENIN* 



500m- 



1000m 



1500m 



Fig. 34. Vertical section of temperature: Livingston Island to Trinity Peninsula, November 1929. 



Fig. 35. Vertical section of density (<j ( ): Livingston Island to Trinity Peninsula, November 1929. 



slightly higher than that at the east end of the strait close to Trinity Peninsula. The 

 surface salinity at the other stations of the section from Smith Island to Brabant Island 

 is very similar to that of the rest of the strait, except at the stations close to Trinity 

 Peninsula which show the influence of dense Weddell Sea water. Dilution by melting 

 ice in the spring has not yet taken place farther to the south-west in sufficient amount to 

 cause surface salinities of less than 33-80 °/ 00 to appear at this end of the strait, and more- 

 over this minimum value is only found at St. WS 488 close to Brabant Island. At all 



