A review of inlet bypassing solutions with nomographs |
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| Authors: | Todd L Walton Jr |
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| Institution: | Beaches and Shores Resource Center, Institute of Science and Public Affairs, Florida State University, 2035 E. Paul Dirac Drive, 203 Morgan Bldg., Box 5 Tallahassee, FL 32310, United States |
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| Abstract: | Bypassing of the coastal sediment at inlets is required to prevent downdrift erosion or the filling in of navigation channels. When coastal structures such as jetties or terminal groins are placed along the inlet boundaries, bypassing is reduced but not eliminated. Bypassing solutions such as Pelnard-Considere (1956) Pelnard-Considere, R., 1956. Essai de Theorie de l'Evolution des Forms de Rivages en Plage de Sable et de Galets, Fourth Journess de l'Hydralique, les energies de la Mer, Question III, Rapport No. 1, pp. 289–298.] are known although the effect of existing background erosion on such bypassing is not so well known. The occurrence of existing erosion due to offshore sand loss complicates the bypassing situation. The following note reviews existing analytical bypassing solutions and presents a solution and nomograms for solving a bypassed amount when existing erosion occurs along a shoreline and the sand which bypasses the updrift structure is assumed to reach the downdrift shoreline without being trapped in shoals or inlet channel. |
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| Keywords: | Beaches Bypassing Inlets |
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