6r- 



:(m)3 



20 r- 



100 120 140 160 180 200 220 240 260 280 



(ft) 

 I I I I 1 



L- 

 30 



40 50 60 70 



(m) 

 Distance from Baseline 



80 



Figure 11. Sand accumulation by a series o£ four single-fence lifts, 



■Sound 



27mo 



1 2 mo 



100 120 140 160 180 200 220 240 260 280 



(ft) 

 I I I 



30 



40 



50 



60 



70 



80 



(m) 



Distance fronfi Baseline 

 Figure 12. Sand accumulation by a series of three double-fence lifts. 



23 



