Figure 18. Isolines of the heat emission with vertical winter cir- 

 culation in the Barents Sea. 



with the coastal region (69°30' north). In the first case, with 20 kg-cal/cm^ released to the atmos- 

 phere, the vertical circulation penetration drops to 175 m, in the second case it drops only to 65 m. 



This phenomenon is explained by the large vertical salinity gradients at the coastal stations, 

 where these gradients are created by shore run-off. From this, it is easy to see that the vertical 

 circulation reaches the bottom mainly in coastal shallows and in individual banks in open sectors of 

 the sea. 



Figure 19 shows the isotherms in one of the cross sections made by the Perseus in the 

 Barents Sea in March 1934. As was to be expected, particularly off shore, when convective 



Or 



lu 



lU 



2 



300 



250 



300 



70° 71° 



LATITUDE 



Figure 19. The influence of vertical circulation 

 on temperature distribution. 



77 



