NUMERICAL SIMULATIONS OF SEDIMENT TRANSPORT INDUCED BY THE 2004 INDIAN OCEAN TSUNAMI NEAR KIRINDA PORT IN SRI LANKA

Naoto Kihara, Masafumi Matsuyama

Abstract


Numerical simulations of sediment transport induced by the 2004 Indian Ocean tsunami near Kirinda port in southeastern Sri Lanka is carried out and the relationships between the tsunami-induced flow and sediment transport are discussed. The results show two clear relationships. The first one is that the local scour occurs and a large amount of suspended sediment is generated around the head of breakwaters when the tsunami-induced flow passes through there. The second one is that the suspended sediment is deposited near vortex centers due to a secondary flow.

Keywords


Sediment transport; three-dimensional simulation; secondary flow

References


Fujii, N., M. Ikeno, T. Sakakiyama, M. Matsuyama, M. Takao, and T. Mukouhara. 2009. Hydraulic experiment on flow and topography change in harbor due to tsunami and its numerical simulation, Annual Journal of Coastal Engineering, JSCE, 56, 291-295 (in Japanese).

Fujii, Y., and K. Satake. 2007. Tsunami source of the 2004 Sumatra–Andaman earthquake inferred from tide gauge and satellite data, Bulletin of the Seismological Society of America, 97, S192-S207. http://dx.doi.org/10.1785/0120050613

Kihara, N., and M. Matsuyama. 2008. Hydrostatic three dimensional numerical simulations of tsunami scour in harbor, Annual Journal of Coastal Engineering, JSCE, 54, 516-520 (in Japanese). http://dx.doi.org/10.2208/proce1989.54.516

Kihara, N., and M. Matsuyama. 2010. Three-dimensional hydrostatic numerical simulations on tsunami-induced sediment transport in a model harbor, Proceedings of 3 rd International Tsunami Field Symposium, 31-32.

Mellor, G.L., and T. Yamada. 1982. Development of a turbulence closure model for geophysical fluid problems, Review of Geophysical and Space Physics, 20, 851-875. http://dx.doi.org/10.1029/RG020i004p00851

Nishihata, T., Y. Tajima, Y. Moriya, and T. Sekimoto. 2006. Topography change due to the Dec 2004 Indian Ocean Tsunami — Field and numerical study at Kirinda port, Sri Lanka, Proceedings of 30 th International Conference on Coastal Engineering, ASCE, 1456-1468.

Ohie, T., S. Koshimura, H. Yanagisawa, and F. Imamura. 2006. Numerical modeling of the 2004 Indian Ocean Tsunami and damage assessment in Banda Aceh, Indonesia, Annual Journal of Coastal Engineering, JSCE, 53, 221-225 (in Japanese).http://dx.doi.org/10.2208/proce1989.53.221

Sakakiyama, T., M. Matsuyama, and T. Yoshii. 2010. Experimental study on bottom topography change in harbor due to tsunami, Proceedings of 32 nd International Conference on Coastal Engineering, ASCE, (in prepared).

Takahashi, J., K. Goto, T. Oie, H. Yanagisawa, and F. Imamura. 2008. Inundation and topographic change due to the 2004 Indian Ocean Tsunami at the Kirinda port, Sri Lanka, Annual Journal of Coastal Engineering, JSCE, 55, 251-255 (in Japanese). http://dx.doi.org/10.2208/proce1989.55.251

Takahashi, T., N. Shuto, F. Imamura, and D. Asai. 1999. A movable bed model for tsunamis with exchange rate between bed load layer and suspended layer, Annual Journal of Coastal Engineering, JSCE, 46, 606-610 (in Japanese). http://dx.doi.org/10.2208/proce1989.46.606

Tomita, T., T. Arikawa, T. Yasuda, F. Imamura, Y. Kawata. 2005. Field survey around south west coast of Sri Lanka of the December 26, 2004 earthquake tsunami disaster of Indian Ocean, Annual Journal of Coastal Engineering, JSCE, 52, 1406-1410 (in Japanese). http://dx.doi.org/10.2208/proce1989.52.1406

Van Rijn, L.C. 1984 (a). Sediment transport, part I: Bed load transport, Journal of Hydraulic Engineering, ASCE, 110, 1431-1456.http://dx.doi.org/10.1061/(ASCE)0733-9429(1984)110:10(1431)

Van Rijn, L.C. 1984 (b). Sediment transport, part II: Suspended load transport, Journal of Hydraulic Engineering, ASCE, 110, 1613-1641.http://dx.doi.org/10.1061/(ASCE)0733-9429(1984)110:11(1613)


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