LIST OF FIGURES 



Figure 1 

 Figure 2 



Figure 3 



Figure 4 

 Figure 5 

 Figure 6 



Figure 7 

 Figure 8 

 Figure 9 

 Figure 10 

 Figure 11 

 Figure 12 

 Figure 13 

 Figure 14 



Figure 14a 



Figure 15 

 Figure 16 



Figure 17 



Figure 18 



Figure 19 



Graphical Solution of Equation 19 » 



PAGE 

 . 5 



Equivalent Temperature minus Air Temperature as a 

 Function of Meteorological Variables. «, 



»•«*« 



11 



Influence of Meteorological Conditions on the 



Freezing of Ice. ..*......*...... .,11 



Effect of Snow Depth on Ice Growth . 

 Effect of Snow Density on Ice Growth, 



• • * o 



■ » . « • • .» o 15 

 ,. . ... ...... 15 



Effect of Equivalent Temperature and Snow Depth 

 on Ice Growth* . 



9 » a 



.««<*« • . • "* • a If 



Effect of Initial Ice Thickness on Ice Growth. . .';'» .17 

 Effect of Snow and Ice Thickness on Rate of Freezing.. 19 



Effect of Wind Velocity on Ice Growth. ........ . 19 



Effect of Salinity on Rate of Freezing. . , . ,. • . .21 



Effect of Heat of Water Mass on Rate of Freezing.. • . 21 



Effect of Water Temperature on the Growth of Ice.. . . 22 



Effect of Thickness of Mixed Layer on Growth of Ice. . 22 



Effect of Cloudiness and Wind Speed on Growth of 

 Ice (Freezing Time 14 hours).. ......•• e 



Effect of Cloudiness and Wind Speed on Growth of 

 Ice (Freezing Time 14 hours) . 



. 24 



.««.«» 



a o e e o . 2t(. 



Observed and Computed Ice Growth at Archangel, U.S.S.R. 26 



Observed and Computed Ice Growth, Denmark Expedition 

 Records, Nov. 1, 1906, to Feb. 8, 1907.. ....... 26 



Observed and Computed Ice Growth at Padloping Island, 

 N.W.T., January 1949.. ........ 27 



Observed and Computed Ice Growth at Padloping Island, 

 N.W.T., January 1950.. ................ 27 



Empirical Formulae of Zubov's Type Compared with 

 Observed Ice Growth at Archangel, U.S.S.R. . • • 



29 



