Erosion Control of Scour during Construction; Report 3. Experimental Measurements of Refraction, Diffraction, and Current Patterns Near Jetties.
Abstract
Effective, comprehensive, and low cost procedures do not exist for eliminating scour during construction in the nearshore environment. Determination of potential alternative procedures is seriously hampered by the inability to predict the extent of potential scour. The objectives of this research program are to develop techniques to minimize and control scour during nearshore construction and to predict the probable magnitude of scour that may result as a function of currents and wave climate. One phase of the research effort is the development of numerical techniques (incorporating both refraction and diffraction effects near the structure) for computing wave-induced velocities and tidal currents in the vicinity of structures and applying these results to determine sediment transport of the bottom material at the particular site. The purpose of this study was to obtain detailed and precise experimental data regarding wave-height variations and currents (patterns and magnitudes) downwave from a shore-connected breakwater or jetty under the simultaneous effects of refraction and diffraction. This information provides insight into the phenomenon of combined wave refraction and diffraction and can be used to verify numerical models that simulate this phenomenon.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1980
- Accession Number
- ADA092712
Entities
People
- Lyndell Z. Hales