lultiple Contour Positions (ft' 





-20 





-15 



— 



-10 



Q. 

 CD 

 <_> 



- 5 



_l 



CO 





o 



c: 



en 







ei - 0. 1 



* -0.6 



-0.2 



♦ -0.7 



* -0.3 



"t -0.8 



♦ - 0.4 



2 -0.9 



X -0.5 





pli;*;liKi:j 



Bar 









Trougti 



50 100 150 200 250 300 350 

 Cumulative Time (hr) 



Figure 23. Movement of bars and troughs along range 3 in experiment 



400 



71Y-06, 



55 



