TABLE 33. THE SALINITY OF SEA WATER BRINE AT DIFFER- 

 ENT TEMPERATURES AND THE CHANGE IN SA- 

 LINITY DURING CHANGES IN TEMPERATURE 



Using table 33, it is not difficult to determine what amount of brine and what amount of pure 

 ice is contained in a given amount of sea ice. Actually, in m, grams of sea ice, we have mSi/1000 

 gm of salts, where S-^ is the salinity of sea ice. If these m grams of sea ice at a certain temper- 

 ature T contain n grams of brine, and the salinity equals 3-,- , we then have nS^ /lOOO g of salt in 

 n grams of brine. 



Let us assume that the total amount of salts in sea ice does not change when the concentra- 

 tion of the brine changes in connection with a change in temperature. Obviously, then, we will 

 always have the equation 



nS^ 



whence 



mSj 



1000 1000 ' 



mSi 



(1) 



(2) 



It follows from this formula that 1 g of sea ice of S^ salinity at a temperature t, contains 

 ^j; /S^ g of brine and (1 - Si/S^) g of pure ice. 



The results of my computations according to table 33 and formula (2) are presented in 

 table 34. 



As can be seen from the table, when the temperatures and salinities of sea ice are high, the 

 amoimt of brine is very great. It is clear that this cannot help having an effect on all the properties 

 of sea ice. 



144 



