sand- trapping efficiency near unity (1.02 ± 0.03) for suspended sand, but a 

 lower efficiency for a nozzle resting on the bed (0.68 ±0.31). Sand fluxes 

 presented herein have been corrected for bottom nozzle efficiency by dividing 

 the quantity of sand obtained by the bed- load trapping efficiency. Sand 

 fluxes were not modified for the suspended nozzles, as the efficiency value 

 for these nozzles is nearly unity. 



30. The lower value (0.68 ± 0.31) of the bed- load trapping efficiency 

 (which includes suspended load within 2.5 cm of the bottom) is caused by scour 

 and the scour hole created under the nozzle that was occasionally observed to 

 occur during portions of the testing period. The actual efficiency of the 

 streamer trap in intersecting oscillatory and quasi -steady uniform flow in the 

 surf zone is not known, but qualitative evaluation using field observations 

 indicates that efficiencies in the surf zone are similar to those determined 

 in the uniform flow tank under sheet flow conditions. 



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