On 5 July 1939 the water of the snezhnitsa (snow puddles) and lakes which were formed during 

 the summer on the ice fields quickly began to run off under the ice, and on 9 to 14 July, the Sedou , 

 together with ice to which it was frozen, was raised 36 cm over the level of the sea. I tried to 

 analyze this phenomenon. 



So So - SEA LEVEL AT THE BEGINNING 

 Si Si - SEA LEVEL AT THE END 



Figure 100. The vertical movements of ice fields in connection with 

 thawing and accretion from freezing. 



Let us assume that a certain part of the ice field remained the entire time isostatically 

 balanced (figure 100). In such a case, in accordance with formula (1), we shall have, for the 

 beginning moment: 



(3) 



Ho=ho+Zo, 



(4) 



and for some other moments, considering that it is possible to neglect the changes occurring in 

 density. 



(5) 



Hl = /Zl + 2l. 



(6) 



279 



