Figure 175. Averaged isobars over the White Sea from 1 through 5 January 1942. 



two lunar days.* During this time the trawler drifted parallel to the axis of the neck of the White 

 Sea, approximately northeast for a distance of about 40 miles, i. e. , with a speed of about 0. 8 

 knots or about 15 km per hour. 



As has already been noted, at this period the isobars were extended along the axis of the neck, 

 and the distance between isobars, drawn at intervals of 1 mb, was on the average about 15 km. 



Considering that the drift is directly proportional to wind velocity which itself is inversely 

 proportional to the distance between isobars. 



we obtain 



(1) 



*The author evidently ignores the additional 30 minutes - Translator. 



441 



