CROSS-SHORE TRANSPORT ON GRAVEL BEACHES

Betsy S. Hicks, Nobuhisa Kobayashi, Jack A. Puleo, Ali Farhadzadeh

Abstract


A numerical and experimental investigation of profile evolution was completed on a laboratory gravel beach. A total of four tests were completed on a gravel beach constructed in a small-scale wave flume, with different incident wave conditions and initial beach slopes. The tests allowed for an examination of erosional, accretional, and migratory bar conditions as well as how the differences affected the final quasi-equilibrium profiles. Profile evolution and hydrodynamic data were collected for comparison with the time- and depth- averaged numerical model CSHORE. The numerical formulations developed for damage progression on a stone armor layer were found to predict the profile evolution on the steeper test conditions but required modifications to the bedload formula to better predict the accretional and bar migration tests.

Keywords


gravel beach; profile evolution; bed load; numerical model

References


Ahrens, J.P. 1990. Dynamic revetments, Proceedings of 22nd International Conference on Coastal Engineering, ASCE, 1837-1850.

Allan, J.C., and P.D. Komar. 2002. A dynamic revetment and artificial dune for shore protection, Proceedings of 28 th International Conference on Coastal Engineering, ASCE, 2044-2056.

Austin, M.J., and G. Masselink. 2006. Observations of morphological change and sediment transport on a steep gravel beach, Marine Geology, 229, 59-77.http://dx.doi.org/10.1016/j.margeo.2006.02.003

Baldock, T.E., and P. Holmes. 1999. Simulation and prediction of swash oscillations on a steep beach, Coastal Engineering, 36, 219-242. http://dx.doi.org/10.1016/S0378-3839(99)00011-3

Blewett, J.C., P. Holmes, D. Horn. 2000. Swash hydrodynamics on sand and shingle beaches, Proceedings of 27 th International Conference on Coastal Engineering, ASCE, 597-609.

Hicks, B.S., N. Kobayashi, J. Figlus, J.A. Puleo, and A. Farhadzadeh. 2010. Cross-shore transport on gravel beaches. Research Report No. CACR-10-01, Center for Applied Coastal Research Kobayashi, N., A. Farhadzadeh, J.A. Melby. 2010. Wave overtopping and damage progression of stone armor layer, Journal of Waterway, Port, Coastal, Ocean Engineering, 136(5).

Mei, C.C. 1989. The Applied Dynamics of Ocean Surface Waves, World Scientific, Singapore, 760 pp.

Pedrozo-Acuña, A., D. Simmonds, A.K. Otta, and A.J. Chadwick. 2006. On the cross-shore profile change of gravel beaches, Coastal Engineering, 53, 335-347.http://dx.doi.org/10.1016/j.coastaleng.2005.10.019

Pilarcyzk, K.W., and K. den Boer. 1983. Stability and profile development of coarse materials and their application in coastal engineering, Proceedings of International Conference on Coastal and Port Engineering in Developing Countries, Sri Lanka

van der Meer, J.W., and K.W. Pilarczyk. 1986. Dynamic stability of rock slopes and gravel beaches. Proceedings of 20 th International Conference on Coastal Engineering, ASCE, 1713-1726.

Wurjanto, A. and N. Kobayashi. 1993. Irregular wave reflection and runup on permeable slopes, Journal of Waterway, Port, Coastal, Ocean Engineering, 119(5), 537 http://dx.doi.org/10.1061/(ASCE)0733-950X(1993)119:5(537)


Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.