'Z'.O 



0\ — ■'^JT 



m 



200 



_,p^ TEMPERATURE go 



'1°0 



^l?S 



Figure 195. Vertical distribution of temperatures at closely situated 

 observation stations of the Frain. and Sedou. 



In earlier times and at the start of the present century, polar ice often approached the shores 

 of Iceland and there interfered with fishing and navigation. For the past 25 years ice has not 

 appeared in significant quantities. 



The Strait of Yugorski Shar froze over on the average about 24 November before the warming 

 of the arctic. The average date of final freeze over from 1920 to 1937 was 25 January; that is, 

 2 months later. 



473 



