20 





I i I I I I I : i ii 

 TIME (DAYS) TO FREEZE 



5 



i i 

 cm. 



i i 



ICE 





























18 



^INITIAL ICE THICKNESS (cm.) 

 8 = SNOW DEPTH (cm.) 

 - To=-25°C. 

 Vo=IO m 



















3 



■/ 







- - - 



















p 



16 - 













4 















R.H.= 80 % 

 CL0UDINESS=O<>/_ 



























14 - 





































I 



4i> 











































































1? - 

























































































































10 - 

























































































































8 - 

























































































































6 - 

























































































































4 

























































































































? - 



















































































n 





n- 



ir 



< r 



F 



3S 



it 



) 



























































o ■- 







































8 5 



18 



22 



26 



10 



10 14 



15 20 25 30 



SCE THICKNESS AND SNOW DEPTH (cm.} 



FIG. 7 EFFECT OF SNOW AND ICE THICKNESS ON RATE OF 

 FREEZING 



30 34 



35 









|. 

























III 



(21 







(.)« 



IND v 



1 



L0CITV.40MlpCT >> 



























(31 







13) 



= 30 

 = 20 



10cm in all coses 



53cm. 



20 °C. 

































































y= 



25 °C 











































































— 





















































































































- 





























































TIME (DAYS] 

 FIG. 8.EFFECT OF WIND VELOCITY ON ICE GROWTH 

 19 



