NUMERICAL SIMULATION OF THREE-DIMENSIONAL SEGMENTATION OF ELONGATED WATER BODY USING BG MODEL
ICCE 2012 Cover Image
PDF

Supplementary Files

Results of prediction of segmentation of a slender lake of 3.6 km length and 0.4 km width (aspect ratio = 9) into small lakes.

Keywords

lakeshore
emergence
shoreline protrusion
BG model
3-D beach changes
instability
self organization

How to Cite

Uda, T., Serizawa, M., & Miyahara, S. (2012). NUMERICAL SIMULATION OF THREE-DIMENSIONAL SEGMENTATION OF ELONGATED WATER BODY USING BG MODEL. Coastal Engineering Proceedings, 1(33), sediment.65. https://doi.org/10.9753/icce.v33.sediment.65

Abstract

In a slender water body with a large aspect ratio, the angle between the direction normal to the shoreline and the wave direction exceeds 45°, resulting in the emergence of cuspate forelands and the subdivision of a lake, because wind fetch along the principal axis becomes long. In this study, the BG model (a three-dimensional model for predicting beach changes based on Bagnold's concept) was applied to this problem. The 3-D subdivision process of a long slender water body was predicted.
https://doi.org/10.9753/icce.v33.sediment.65
PDF

References

Ashton, A., A. B. Murray, and O. Arnault. 2001. Formation of coastline features by large-scale instabilities induced by high angle waves, Nature, Vol. 414, 296-300.http://dx.doi.org/10.1038/35104541

PMid:11713526

Ashton, A., and A. B. Murray. 2006. High-angle wave instability and emergent shoreline shapes: 1. Modeling of sand waves, flying spits, and capes: J. Geophys. Res., Vol. 111, F04011, doi: 1. 1029/2005JF000422.

Ashton, A., A. B. Murray, R. Littlewood, D. A. Lewis, and P. Hong. 2009. Fetch limited selforganization of elongate water bodies, Geology, Vol. 37, 187-190.http://dx.doi.org/10.1130/G25299A.1

Falqués, A, N. van den Berg, and D. Calvete. 2008. The role of cross-shore profile dynamics on shoreline instability due to high-angle waves, Proc. 31st ICCE, 1826-1838.

Goda, Y. 2003. Revisiting Wilson's formulas for simplified wind-wave prediction, J. Waterway, Port, Coastal and Ocean Engineering, Vol. 129, No. 2, 93-95.http://dx.doi.org/10.1061/(ASCE)0733-950X(2003)129:2(93)

Horikawa, K. ed. 1988. Nearshore Dynamics and Coastal Processes, University of Tokyo Press, Tokyo, 522 pp.

Komar, P. D., and D. L. Inman. 1970. Longshore sand transport on beaches, J. Geophys. Res., 75, 5914-5927.http://dx.doi.org/10.1029/JC075i030p05914

Komar, P. D. 1998. Beach Processes and Sedimentation, Prentice Hall International, London, 544 pp.

Serizawa, M., T. Uda, T. San-nami, and K. Furuike. 2003. Prediction of depth changes on x-y meshes by expanding contour-line change model, Ann. J. Coastal Eng. JSCE, Vol. 50, 476-480. (in Japanese)http://dx.doi.org/10.2208/proce1989.50.476

Serizawa, M., T. Uda, T. San-nami, and K. Furuike. 2006. Three-dimensional model for predicting beach changes based on Bagnold's concept, Proc. 30th ICCE, 3155-3167.

Serizawa, M., and T. Uda. 2011. Prediction of formation of sand spit on coast with sudden change using improved BG model, Coastal Sediments '11, 1907-1919.

Serizawa, M., T. Uda, and S. Miyahara. 2012. Prediction of development of sand spits and cuspate forelands with rhythmic shapes caused by shoreline instability using BG model, Proc. 33rd ICCE. (in press)

Wilson, B. W. 1965. Numerical prediction of ocean waves in the North Atlantic for December, 1959, Deut. Hydrogr. Zeit, Jahrgang 18, Heft 3, 114-130.

Zenkovich, V. P. 1967. Processes of Coastal Development, Interscience Publishers, New York, 751 pp.

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.