at a section should be fully investigated and a test section planned such that 

 trap testing location and ambient measurement location have similar sand 

 transport characteristics. An extensive set of various nozzles could be 

 evaluated to optimize nozzle size and shape, for which the present study 

 provides much guidance . 



131. Similarly, a field experiment could be conducted with various 

 types of sediment transport instruments (optical backscatter sensors, pit 

 samplers, Kana sampler, etc. (see Appendix A)) to evaluate the performance of 

 the streamer trap relative to other measurement devices. The streamer trap 

 provides an easy, inexpensive, and reliable method of making measurements in 

 the nearshore zone within certain limitations, primarily wave height. How- 

 ever, more developmental work both in the laboratory and field would refine 

 and lend understanding to trap characteristics for more complicated flow 

 conditions. Optimization and use of the streamer trap would greatly benefit 

 the furtherance of quantitative sand transport studies in the nearshore and in 

 rivers . 



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