Numerical Simulations of Nonbreaking Solitary Wave Attenuation by a Parameterized Mangrove Forest Model

  • Authors

    • Didit Adytia
    • Semeidi Husrin
    2019-01-26
    https://doi.org/10.14419/ijet.v8i1.9.26358
  • Tsunami, Solitary waves, Mangrove Forest, Water Waves, Boussinesq equations.

  • A numerical approach for investigating a nonlinear transformation of tsunami wave attenuation due to mangrove forest was performed.  A dispersive nonlinear wave model so-called Optimized Variational Boussinesq Model (OVBM) is used to simulate the propagation of non-breaking solitary waves, representing tsunami waves. The wave damping by mangrove forest is modelled by adding a dissipation term due to bottom roughness in the momentum equation of the OVBM. The accuracy of the model larger than 85% is obtained by comparing results of simulation with experimental data from the hydrodynamic laboratory.

     

     

  • References

    1. [1] Adytia, D., and Groesen, E., 2012. Optimized Variational 1D Boussinesq modelling of coastal waves propagating over a slope. Coast. Eng., 64, pp. 139–150.

      [2] Adytia, D., 2014. Simulations of short-crested harbor waves with variational boussinesq modelling. In Proc.24th Int. Ocean and Polar Engineering Conference. ISOPE 2014, ISOPE, pp. 912–918.

      [3] Adytia, D., and Lawrence, 2016. Fully nonlinear dispersive HAWASSI-VBM for coastal zone simulations. In Proc. of the ASME 2016 35th International Conference on Ocean, Offshore and Archtic Engineering OMAE 2016.

      [4] Broer, L., 1974. On the Hamiltonian theory of surface waves. Appl. Sci. Res., 29(1), pp. 430–446.

      [5] Dahdouh-Guebas, F., L. P. Jayatissa, D. Di Nitto, J. O. Bosire, D. Lo Seen, and N. Koedam, 2005. How effective were mangroves as a defence against the recent tsunami?, Curr. Biol., 15(12), 443–447.

      [6] Danielsen, M.K., Sorensen, M.F. Olwig, V. Selvam, F. Parish, N.D. Burgess, T. Hiralshi, V.M. Karunagaran, M.S. Rasmussen, L.B. Hansen, A. Quarto And N. Suryadiputra,. 2005. ‘The Asian tsunami: a protective role for coastal vegetation’, Science 310 p. 643.

      [7] Groesen, E., Adytia, D., and Andonowati., 2008. Near-coast tsunami waveguiding: phenomenon and simulations. Nat. Hazards Earth Syst. Sci., 8, 175–185.

      [8] Harada, K., and Imamura, F., 2006. Effects of coastal forest on tsunami hazard mitigation—a preliminary investigation. Tsunamis: case studies and recent developments. Advances in Natural and Technological Hazards Research, pp. 279–292.

      [9] Husrin, S., Strusinska, A, & Oumeraci H., 2012. Experimental study on tsunami attenuation by mangrove forest. Earth Planets Space, 64, 973–989.

      [10] Husrin, S., 2013. PhD Thesis: Attenuation of Solitary Waves and Wave Trains by Coastal Forests. University of Braunschweig – Institute of Technology.

      [11] Latief, H., & Hadi, S., (2006): ‘Protection from Tsunamis, Coastal Protection in the Aftermath of the Indian Ocean Tsunami’: What role for forests and trees?. Proceedings of the regional technical workshop, FAO, Khao Lak, Thailand.

      [12] Luke, J., 1967. A variational principle for fluid with a free surface. J. Fluid. Mech., 27, pp. 395–397.

      [13] Morton, RA., Buckley, ML., Gelfenbaum, G., Richmond, BM., Cecioni, A., Artal, O., Hoffmann, C., and Perez, F., 2010. Geological Impacts and Sedimentary Record of the February 27, Chile Tsunami—La Trinchera to Concepcion. USGS and Chile International Tsunami Survey Team (ITST).

      [14] Istiyanto, D.C., Utomo K.S., and Suranto,. 2003. Pengaruh Rumpun Bakau Terhadap Perambatan Tsunami di Pantai (The effect of mangrove forest to the attenuation of tsunami in coastal area). Seminar Mengurangi Dampak Tsunami: Kemungkinan Penerapan Hasil Riset, BPPT – JICA, 11 March 2003, Yogyakarta (Indonesian).

      [15] Pudjaprasetya, S.R., E. Van Groesen, and E. Soewono. 1999. The splitting of solitary waves running over a shallower water. Wave Motion, 29, 375-389.

      [16] Zakharov, V., 1968. “Stability of periodic waves of finite amplitude on the surface of a deep fluidâ€. J. Eppl. Mech.Tech. Phys., 9(2), pp. 190–194.

  • Downloads

  • How to Cite

    Adytia, D., & Husrin, S. (2019). Numerical Simulations of Nonbreaking Solitary Wave Attenuation by a Parameterized Mangrove Forest Model. International Journal of Engineering & Technology, 8(1.9), 10-16. https://doi.org/10.14419/ijet.v8i1.9.26358