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Figure 8. Schematic of the streamer trap rack 



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

 surf zone is not known, but qualitative observation in the field indicates 

 that surf zone efficiencies may be approximated by efficiencies determined in 

 the uniform flow tank under sheet flow conditions. 



25. To measure the transport rate, the traps (denoted by symbols Tl to 

 T7 in Figure 2) were carried to predetermined positions defined by reference 

 to the photopole line and an additional line of survey marker poles placed 

 parallel to the photopole line. Typically, one person carried and operated 

 one trap; however, two operators were sometimes necessary near the breaker 

 line. At a signal, the racks were simultaneously thrust into the bed with the 



20 



