A Study of the Relation of Wave Height and Erosion at Bangkhuntien Shoreline, Thailand

Authors: Prasertsak Ekphisutsuntorn, Prungchan Wongwises, Chaiyuth Chinnarasri, Usa Humphries, Suphat Vongvisessomjai

Abstract:

In this paper, the significant wave height at the Upper Gulf of Thailand and the changing of wave height at Bangkhuntien shoreline were simulated by using the Simulating WAves Nearshore Model (SWAN) version 40.51. The simulated results indicated that the significant wave height by SWAN model corresponded with the observed data. The results showed that the maximum significant wave height at the Bangkhuntien shoreline were 1.06-2.05 m. and the average significant wave height at the Bangkhuntien shoreline were 0.30-0.47 m. The significant wave height can be used to calculate the erosion through the Bangkhuntien shoreline. The erosion rates at the Bangkhuntien shoreline were prepared by using the aerial photo and they were about 1.80 m/yr. from 1980- 1986, 4.75 m/yr from 1987-1993, 15.28 m/yr from 1994-1996 and 10.03 m/yr from 1997-2002. The relation between the wave energy and the erosion were in good agreement. Therefore, the significant wave height was one of the major factors of the erosion at the Bangkhuntien shoreline.

Keywords: significant wave height, erosion, SWAN, relation, Bangkhuntien shoreline

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1075649

References:

[1] Bangkok Metropolitan Administration, Bangkhunthien pilot project coastal erosion and reclamation study, Ministry of Interior, Thailand, 2001, 75.
[2] Bangkok Metropolitan Administration, The Bangkhuntien shoreline protection and troubleshooting project, Bangkok, Thailand, 2006, 267.
[3] G. Komen, L. Cavaleri, M. Donelan, K. Hasselmann, S. Hasselmann and P.A.E.M. Janseen, Dynamics and modelling of ocean waves, Cambridge University Press, UK. 1994, 532.
[4] J. A. Battjes, M. Isaacson and M. Quick (Eds.), "Shallow water wave modelling," in 1994 Proc. Waves-Physical and Numerical Modelling, University of British Columbia, Vancouver, pp. 1-24.
[5] J. C. Hargreaves and J. D. Annan, " Comments on Improvement of the short fetch behavior in the wave ocean model (WAM)," J. Atmos. Oceanic Techn., Vol. 18, 2001, pp.711-715.
[6] J. W. Kamphuis, Introduction to coastal engineering and management, World Scientific Publishing, Singapore, Vol.16, 2000, 437p.
[7] H. Gunther, S. Hasselmann and P.A.E.M. Janssen, The WAM model Cycle 4 (revised version), Deutsch. Klim. Rechenzentrum, Techn. Rep. No. 4, Hamburg, Germany, 1992.
[8] H. Hanson, GENESIS, A generalized shoreline change model for engineering use, Report No. 1007, Department of Water Resources Engineering, University of Lund, Lund, Sweden,1987.
[9] K. Hasselmann , T. P. Barnett, E. Bouws, H. Carlson, D.E. Cartwright, K. Enke, J. A. Ewing, H. Gienapp, D. E. Hasselmann, P. Kruseman, A. Meerburg, P. Muller, D. J. Olbers, K. Richter, W. Sell and H. Walden, Measurements of wind-wave growth and swell decay during the Joint North Sea Wave Project (JONSWAP), Dtsch. Hydrogr. Z. Suppl., 12, A8, 1973, 95.
[10] K. Horikawa, M. Hattori, "The nearshore environment research center project," Proc. Coastal Sediments, American Society of Civil Engineers, 1987, pp. 756-771.
[11] N. L. Jackson, "Evaluation of criteria for predicting erosion and accretion on an estuarine sand beach, Delaware bay, New Jersey," J. Estuaries Coast., Vol. 22(2A), 1999, pp. 215-223.
[12] P. Ekphisutsuntorn, The study of wave and current influences on shoreline changes at Bangkhuntien district, King Mongkut-s University of Technology Thonburi, Bangkok, Thailand, 2001.
[13] P. Ekphisutsuntorn, Numerical modeling of erosion at Bangkhuntien district, Thailand, King Mongkut-s University of Technology Thonburi, Bangkok , Thailand, 2008.
[14] P. Ekphisutsuntorn, ,P. Wongwises, C. Chinnarasri, U. W. Humpries and S. Vongvisessomjai, "Numerical Modeling of Erosion for Muddy Coast at Bangkhuntien shoreline, Thailand," J. Environ Sci Eng., Vol.2(4), 2010, pp. 230-240.
[15] Royal Forest Department, The feasibility study on mangrove revival and extension project in the Kingdom of Thailand, Ministry of Agriculture and Cooperatives, Thailand, 2001.
[16] S. Hasselmann, K. Hasselmann, E. Bauer, P.A.E.M. Janssen, G. J. Komen, L. Bertotti, P. Lionello, A. Guillaume, V. C. Cardone, J. A. Greenwood, M. Reistad, L. Zambresky and J. A. Ewing, "The WAM model-a third generation ocean wave prediction model," J. Phys Ocean., Vol. 18, 1988, pp. 1775-1810.
[17] S. Hasselmann, K. Hasselmann, J. H. Allender and T. P. Barnett, "Computations and parameterizations of the nonlinear energy transfer in a gravity-wave spectrum, Part II: Parameterizations of the nonlinear energy transfer for application in wave models," J. Phys Ocean., Vol. 15, 1985, pp. 1378-1391.
[18] The SWAN team, SWAN technical documentation, Environmental Fluid Mechanics Section, Faculty of Civil Engineering and Geosciences, Delft University of Technology, The Netherlands, 2006, 66.
[19] W. Wannawong, U. W. Humphries, P. Wongwises, S. Vongvisessomjai and W. Lueangaram, "Numerical Analysis of Wave and Hydrodynamic Models for Energy Balance and Primitive Equations," J. Math Stat Sci., Vol. 2(4), 2010, pp. 140-150.
[20] W. Wannawong, U. W. Humphries, P. Wongwises, S. Vongvisessomjai, "Three Steps of One-way Nested Grid for Energy Balance Equations by Wave Model," J. comp Math Sci., Vol. 5(1), 2011, pp.23-30.