Modified McCormicks model for equilibrium shorelines behind a detached breakwater
✍ Scribed by T.-W. Hsu; C.-D. Jan; C.-C. Wen
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 181 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0029-8018
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✦ Synopsis
Experimental data of equilibrium shorelines behind a detached breakwater obtained by previous investigators were collected and re-reviewed to investigate the major parameters affecting the shoreline shapes. The result shows that the equilibrium shorelines depend not only on the breakwater length B and the distance of the breakwater from the initial shoreline S, but also on the incident wave steepness H 0 / L 0 , beach slope S b and the sand size D 50 . Most of equilibrium shorelines behind a detached breakwater could be approximately described by a couple of elliptic curves as proposed by McCormick (Ports, Coastal & Ocean Engineering ASCE 119, 1993, p. 657). However, after re-examination, this paper shows that the dimensionless semiminor axis b / S and the dimensionless distance G/ b in the McCormick's ellipticcurve model should be modified, as compared with the available experimental data.