40 



S. L. Dingman et al. 



0) 



o 



Profile B 



Ram Hardness 

 100 



Profile A 



Rom Hardness 

 100 



Density, g cm" Snow 



0.30 040 Chorocteristics 



-20 -10 



Temp,°C 



"^iX 



FIGURE 2-5. Profile of the snow cover showing depth hoar above the 

 vegetation and ice layers, and plots of physical properties. ("Ram hard- 

 ness" is a measure of the snow's resistance to the penetration of a cone 

 under an impact of known energy.) (After Benson 1969.) 



