Section V. FUTURE OBJECTIVES 



While much has been accomplished to date within the context of the 

 original 3-year research and development program, objectives in several 

 categories remain to be met. Some are merely refinements of existing 

 capabilities; others represent major goals. Both classes are categorized 

 and summarized as follows: 



a. Isotopes : Seek other isotopes suitable for tagging by a technique 

 analogous to xenonation; study field use of isotope(s) other than xenon; 

 and provide for detection and analysis of multiple isotopes for use in 

 study of depth of sand burial. 



b. Instrumentation and Computer Programs : Develop in situ stationary 

 detectors to serve as monitors of sand movement; modify existing detector 

 and on-board analyzer system to simultaneously detect and record multiple 

 isotopes; provide for use of oceanographic cable;- automate and digitize 

 water depth data; and refine computer programs for analysis and treatment 

 of radiation data. 



c. Sediment Movement : Improve field surveying to increase collection 

 of data points for maps; design and conduct programs for other coastal 

 sectors in the study area; extend the surveys through the surf zone and 

 beach face; use multiple isotopes; define more precisely the mechanics 

 and movement (including, if possible, quantification) of sediment in the 

 Point Conception area; and determine the effect of sediment burial. 



To be able to predict the course of sediment movement and annual 

 volume will provide for improved engineering design of coastal structures 

 and subsequent economy of maintenance. Basic techniques and technology 

 are now at the point where the RIST system can be considered an operational 

 tool for determining direction of sediment movement. However, improvements 

 and refinements of the system will continue only through use. Improvements 

 must continue to a point where the program can be operated by a greater 

 percentage of technicians than is now possible. Not until then will the 

 techniques and technology developed be fully and widely applicable to 

 engineering and scientific studies. 



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