Measuring and Understanding Coastal Processes (1989) / Chapter Skim
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6. Conclusions and Recommendations
6. Conclusions and Recommendations
Pages 95-104
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From page 95... ...
Because the modeling function has a fundamental role in analyzing and forecasting coastal changes, the committee was requested also to assess how the capability and practice of modeling of processes in the high-energy coastal waters influence the development of measurement systems. The committee was also responsible for providing guidance on measurement development priorities.
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From page 96... ...
Thus, a need exists for a forum to provide information, collaboration, interaction, and coordination on measurement systems development. The committee agreed to 19 recommendations regarding specific development of coastal instruments and measurement systems.
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From page 97... ...
—art Identify Development Needs 1 ~ -'-''-a ~ I ~ Develop Conclusions Establish Recommendations, Ranking and Priorities Reach Consensus Integrate Conclusions and Recommendations Establish Final Recommendations FIGURE 6-1 Analytical process for development of conclusions and recommendations.
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From page 98... ...
in the nearshore zone is largely empirical and poorly verified. RECOMMENDA TION: It is recommended that programmatic emphasis be placed; on theoretical improvement and rigorous fiield testing fin an interactive fashion} of existing sediment-transport models, while more physically based models are derived and field-tested.
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From page 99... ...
CONCLUSION: Adequate current data are needed for verification and further development of two-dimensional and three-dimensional limited-area circulation models. RECOMMENDATION: ~ is recommended that development of low-cost current meters and associated telemetry or recording systems be undertaken to provide a feasible means of obtaining data vital to the verification and further development of two- and three-dimensional hydrodynamic models in the coastal region.
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From page 100... ...
time, acoustic-Doppler velocimeler, or laser-Doppler velocimeter techniques be improved so that adequate velocity profiles can be obtained in energetic rapidly varying Tow fields. Alternative technology (optical methods, hot-fiimJ, which may provide estimates of boundary shear stress under a broader spectrum of environmental conditions, should be pursued.
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From page 101... ...
RECOMMENDATION: It is recommended that technologies for measuring nearshore loathymetry toe improved to aIlou' measurements under higher wave conditions. Development efforts should evaluate both remote-senstng methods and in situ optical and acoustic technologies for estimating beach profile changes over a full range of oceanic conditions.
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From page 102... ...
Measurement programs should be initiated to provide wave height and measurements in sufficient detail to test these models. M~DIUM-TO-[OW-PRIORITYRECO~n~ENDATIONS CONCLUSION: Quantification of tsunami models, coastal tide models, and shelf circulation models requires deep water pressure gauge measurements at Pacific locations, seaward of the continental slope.
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From page 103... ...
Many of the processes of interest are nonlinear and interactive and require relatively complex physics in simulation models. Advances in computer technology and modeling make it feasible to mode} some of these processes if the data requirements for the models can be satisfied.
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