TEMPERATURE AND SALINITY 



General . During Operation HIGHJUMP, the USS HENDER- 

 SON and the USS CACOPAN of the Western Task Group made 

 a number of simultaneous sea temperature and salinity obser- 

 vations to determine the density and buoyancy of the antarctic 

 water. The following is a discussion of these data. 



The observations consist of (1) six hydrographic stations 

 taken from the surface to depths of 150 to 250 meters, (2) one 

 station at which observations were made at the surface and at 

 300 meters only, (3) one station at which observations were 

 made at the surface and at 50 meters only, (4) one station at 

 which a salinity sample was obtained from the water trapped 

 in a coring device at a depth of 2700 meters, and (5) thirty-one 

 surface observations of temperature and salinity from bucket 

 samples. Only those temperature observations made at the 

 same time that salinity samples were taken are included. 

 The positions where the hydrographic stations were occupied 

 are shown in figure 20. 



Methods of Collection . The method used in taking these 

 stations differed markedly from the standard procedure. 

 Consideration of this fact should be made when comparing 

 these data to other hydrographic stations where reversing 

 thermometers were used. Reversing thermometers were 

 not used for the stations discussed here. Instead, a bathy- 

 thermograph and a Nansen bottle were attached to the bathy- 

 thermograph wires. The temperatures listed in table 8 were 

 then obtained from the temperature -depth trace made by the 



20° 10° 0° 10° 20° 30° 40° 



FIGURE 20. Location of hydrographic stations. 



150' 160 



170° 180' 170° 160° 150 140° 



