DEPTH OF CLOSURE DETERMINATION IN THE VICINITY OF COASTAL STRUCTURE
ICCE 2012 Cover Image
PDF

Keywords

depth of closure
coastal structure
hydrodynamic conditions

How to Cite

Widyaningtias, W., Tanaka, H., & Kanayama, S. (2012). DEPTH OF CLOSURE DETERMINATION IN THE VICINITY OF COASTAL STRUCTURE. Coastal Engineering Proceedings, 1(33), sediment.87. https://doi.org/10.9753/icce.v33.sediment.87

Abstract

This study is conducted to analyze the effect of coastal structure to depth of closure variation. Analysis on time series bathymetry data has been applied to determine location of depth of closure. The deviation of bathymetry profile changing is also considered. Furthermore, longshore variation of depth of closure is proposed. The hydrodynamic conditions are simulated using Boussinesq model derived by Peregrine (1967). This model is applied considering its applicability to observe non-linear and dispersion phenomenon while wave propagates to the shoreline. The simulation is carried out under regular wave assumption with 20% wave height in deep area is applied as representative wave. The simulation results are obtained in term of surface water level, bottom velocity in x and y direction and current velocity. The result is utilized to calculate maximum bottom velocity just outside boundary layer. To observe sediment movement along the coast, maximum shear stress is calculated under wave-current combined motion. Dimensionless Shields parameter is also assessed. The simulation results are depicted in spatial map. Furthermore, the effect of coastal structure to depth of closure variation is confirmed using hydrodynamic conditions.
https://doi.org/10.9753/icce.v33.sediment.87
PDF

References

Abbott, M.B., A. Damsgaard, and G.S. Rodenhuis. 1973. System 21, "Jupiter" (a design system for two dimensional nearly horizontal flows), Journal of Hydraulic Research, 11(1), 1-28.http://dx.doi.org/10.1080/00221687309499788

Abbott, M.B., A.D. McCowan, and I.R. Warren. 1984. Accuracy of short-wave numerical models, Journal of Hydraulic Engineering, 110(10), 1287-1301.http://dx.doi.org/10.1061/(ASCE)0733-9429(1984)110:10(1287)

Abbott, M.B., H.M. Petersen, and O. Skovgaard. 1978. On the numerical modelling of short waves in shallow water, Journal of Hydraulic Research, 16(3), 173-203.http://dx.doi.org/10.1080/00221687809499616

Abbott, M.B. 1974. Continuous flows, discontinuous flows and numerical analysis, Journal of Hydraulic Research, 12(4), 417-467.http://dx.doi.org/10.1080/00221687409499724

Beji, S., and J.A. Battjes. 1994. Numerical simulation of nonlinear wave propagation over a bar, Coastal Engineering, 23, 1-16.http://dx.doi.org/10.1016/0378-3839(94)90012-4

Birkemeier, W. A. 1985. Field data on seaward limit of profile change., Journal of Waterway, Port, Coastal and Ocean Engineering, 111(3), 598-602.http://dx.doi.org/10.1061/(ASCE)0733-950X(1985)111:3(598)

Boussinesq, J. 1872. Thorie des ondes et des remous qui se propagent le long d'un canal rectangulaire horizontal, en communiquant au liquide contenu dans ce canal des vitesses sensiblement pareilles de la surface au fond, Journal de Mathmatique Pures et Appliques, 17, 55-108.

Capobianco, M., M. Larson, R.J. Nicholls, and N.C. 1997. Depth of closure: A contribution to the reconciliation of theory, practise and evidence, Proceedings of Coastal Dynamics'97, ASCE, 506-515.

Dean, R.G., and R. Dalrymple. 2002. Coastal Processes: with engineering applications, Cambridge University Press, UK, 133-158 pp.

Francois, S., M.J.F. Stive, and F. Pons. 2004. Longshore variation of depth of closure on a micro-tidal wave-dominated coast, Proceedings of 29th International Conference on Coastal Engineering, 3, 2327-2339.

Gracia, V., J.A. Jimenez, and A. Sanchez-Arcilla. 1995. Nearshore profiles along the Ebro delta coast, implications for coastal processes, MEDCOAST 95, Tarragona, Spain, 1131-1143.

Gracia, V., J.A. Jimenez, A. Sanchez-Arcilla, J. Guillen, and A. Palaqes. 1998. Short-term relatively deep sedimentation on the Ebro delta coast. Opening the closure depth, Proceedings of 26th International Coastal Engineering Conference, ASCE, 2902-2912.

Hallermeier, R.J. 1981. A profile zonation for seasonal sand beaches from wave climate, Coastal Engineering, 4, 253-277.http://dx.doi.org/10.1016/0378-3839(80)90022-8

Hanson, H., and N.C. Kraus. 2011. Long-term evolution of a long-term evolution model, Journal of Coastal Research, 59, 118-129.http://dx.doi.org/10.2112/SI59-012.1

Hinton, C., and R.J. Nicholls. 1998. Spatial and temporal behaviour of depth of closure along the Holland coast, Proceedings of 26th International Conference on Coastal Engineering, ASCE, 2913-2925.

Kabiling, M.B., and S. Sato. 1994. A numerical model for nonlinear waves and beach evolution including swash zone, Coastal Engineering in Japan, 37(1), 67-86.

Karambas, Th.V., and C. Koutitas. 1992. A breaking wave propagation model based on the Boussinesq equations, Coastal Engineering, 18, 1-19.http://dx.doi.org/10.1016/0378-3839(92)90002-C

Kennedy, A.B., Q. Chen, J.T. Kirby, and R.A. Dalrymple. 2000. Boussinesq modeling of wave

Uda, T. 1997. Beach erosion in Japan, Sankaido, 442 pp (in Japanese).

PMCid:500129

Wang, P., and R.A. Davis, Jr. 1999. Depth of closure and the equilibrium beach profile: a case study from Sand Key, west-central Florida, Shore and Beach, 67, 33-42.

Zacharioudaki, A., and D.E. Reeve. 2009. A note on the numerical solution of the one-line model, Environmental modelling and software, 25, 802-807.http://dx.doi.org/10.1016/j.envsoft.2009.11.015

Zelt, J. 1991. The runup of breaking and non-solitary waves, Coastal Engineering, 15, 205-246.http://dx.doi.org/10.1016/0378-3839(91)90003-Y

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.