20 22 24 26 26 30 32 34 36 38 40 



Velocity in ft. /sec. 

 WIND VELOCITY GRADIENTS 

 FIGURE -55 



3000 



2000 



1000 



10 20 30 40 



Velocity of Wind in ft./sec, 5 f t. obove Beach 



RELATION BETWEEN WIND VELOCITY AND RATE 

 OF SAND MOVEMENT 



FIGURE -56 



67 



