Modelling the Plan Shape of Shingle Beaches
The prediction of beach changes due to alongshore wave induced sediment transport has traditionally been made using physical modelling techniques. However, apart from the problems of scaling, physical models are generally too small to reproduce sufficiently long stretches of coast. With the recent development of mathematical models most problems dealing with beach plan shape changes are now dealt with numerically. Models dealing with sand beaches already exist and are used extensively at the Hydraulics Research Station to predict chancres in coastline evaluation brought about by construction of harbour arms, artificial headlands, etc. Our view is that a relatively simple model is also needed which will allow the coastal engineer to predict the long-term changes of a shingle beach. Such a model clearly will not be able to incorporate short term fluctuations due to variations in the wave climate or due to extreme events. Nevertheless it should predict the mean annual rates of alongshore drift and of beach recession and advance.
KeywordsWave Height Sand Beach Wave Climate Beach Profile Incipient Motion
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- Bakker, W.T., 1968. The dynamics of a coast with a groyne system. Proc. 11th Coastal Eng. Conf., ASCE, pp 492–517.Google Scholar
- Hydraulics Research Limited, 1982. Coastline changes near Pisa, Italy. A beach mathematical model study. Report No. EX1084.Google Scholar
- Pattearson, C.C. and Patterson, D.C., 1983. Gold Coast longshore transport. Proc. 6th Australian Conf. on Coastal and Ocean Eng.Google Scholar
- Price, W.A., Tomlinson, K.W. and Willis, D.H., 1972. Predicting changes in the plan shape of beaches. Proc. 13th Coastal Eng. Conf. ASCE, pp1321–1329.Google Scholar
- Shore Protection Manual, 1977. U.S. Army Corps, of Engineers, CERC, Fort Belvoir, Virginia.Google Scholar
- A. H. Brampton and J. M. Motyka Swart, D.H., 1976. Predictive Equations regarding coastal transport. Proc. 15th Coastal Eng. Conf., ASCE, pp 1113–1132.Google Scholar
- Van Hijum, E. and Pilarczyk, K.W., 1982. Equilibrium profile and longshore transport of coarse material under regular and irregular wave attack. Delft Hydraulics Laboratory, publ. 2 74.Google Scholar
- Webber, N.B., 1980. Poole/Chrischurch Bay Research Project. Research on Beach Processes. Dept. of Cov. Eng., Univ. of Southampton.Google Scholar