The oceanographic stations 3540 to 3551 were then occupied using 

 Nansen-type reversing water bottles and deep sea reversing thermom- 

 eters and standard procedure except that the attempted depths of 

 observations were 0, 10, 20, 30, 40, 60, 80, 100, 125, and 150 meters, 

 with each station being completed with a single cast. Of these 12 stations 

 three were located at distances of less than 1,000 yards from the berg. 

 The salinity distribution at the surface is shown in figure 20. in which 

 the locations of the stations have been shown relative to the berg. 

 At each of the stations the shape of the vertical distribution curves 

 of temperature and salinity are similar. These are illustrated in figure 21 

 in which the average temperature and salinity have been shown as solid 

 lines between broken lines representing the minimum and maximum 

 values. The effect of these ranges of temperature and salinity on density- 

 has been shown as Ao"< where that value represents the change in a, 

 resulting from combining the maximum and minimum temperature 

 with the average salinity to derive the temperature effect and combining 



Figure 22. — Dynamic topography of the sea surface near a berg relative to the 140-decibar surface. 

 Stations, representing points of observation, plotted with reference to berg. Location of bathythermo- 

 graph casts used in constructing figures 18, 19 and 26 are shown. Dotted line represents location of 

 temperature section shown in figure 26. 



27 



