ha(N- 



ka(3) 



ba<2) 





Ah 



S(N) 



"TT 



S(4) 



S(3) 



S(2) 



S(1) 



s 



STREAMER 



Aw 



WIDTH 



Ah 



HEIGHT 



Aa 



DISTANCE BETWEEN 





STREAMERS 



N 



TOTAL NUMBER 





OF STREAMERS 



Figure 6. Variables used in transport calculations 



index k increases from k=l at the bottom to k=N , where N is the total 

 number of streamers in a particular trap. Streamer width is Aw , streamer 

 height is Ah , and the sampling interval is At. If these quantities are 

 used, the flux of sand at streamer k , F(k) (units of weight per unit area 

 and unit time), can be calculated using Equation 2: 



F(k) = 



S(k) 



Ah Aw At 



(2) 



26. The flux between neighboring streamers FE(k) can be estimated by 

 linear interpolation between adjacent measured fluxes: 



FE(k) = 0.5 [F(k) + F(k+1)] 



(3) 



27. The transport rate density for a trap i (units of sand weight per 

 unit width of surf zone per unit time) can be calculated using previously 



19 



