%0 Journal Article
%T Study of Polarized Wave with a Hydrodynamic Model and Fourier Spectral Method
%A Dennis Ling Chuan Ching
%A Zainal Abdul Aziz
%A Faisal Salah
%J Modelling and Simulation in Engineering
%D 2013
%I Hindawi Publishing Corporation
%R 10.1155/2013/720590
%X The polarization effects in hydrodynamics are studied. Hydrodynamic equation for the nonlinear wave is used along with the polarized nonlinear waves and seismic waves act as initial waves. The model is then solved by Fourier spectral and Runge-Kutta 4 methods, and the surface plot is drawn. The output demonstrates the inundation behaviors. Consequently, the polarized seismic waves along with the polarized nonlinear waves tend to generate dissimilar inundation which is more disastrous. 1. Introduction Via the massive energy released by the faults, energy of the earthquake is usually measured in magnitude or Rachel scale. Released energy in less than one percent of is said transmitted to form Tsunamis [1]. Therefore, we assume that the Tsunami and seismic waves should exist together in this paper during the derivation of polarized model. The notion is strong ground motion by the wave field polarization that generates Tsunami. Reflection being transmitted or polarization gives strong earth motion. Seismic waves due to strong polarized earthquakes propagating in seabed layers will reduce soil stiffness and increase the energy dissipation into the soil [2, 3]. Lately, recording of polarization of the Earth¡¯s teleseismic wave fields and strong ground motion is imaged by applying a vector stacking method to three component broadband seismograms [4]. Polarization effect of the P waves and S waves was also studied analytically for the dispersion and attenuation effects in fluid saturated medium [5¨C8]. Besides, wave field polarization may both amplify the displacement and increase the attenuation. It is found that multiple wave fields impinging each other give amplification effect while wave field separation gives the negative damping effects [9]. By considering the polarization of seismic wave to the generation of water displacement, we analyze the effect of strong polarized seabed motion towards the generation of Tsunamis. Tsunamis are divided into breaking and nonbreaking waves. Analytical approach is used to study the behavior of Tsunamis theoretically [10¨C13]. Zelt [14] used Boussinesq equations for deriving breaking and nonbreaking Tsunami run-ups. There are experimental approaches for exploring nonlinear wave¡¯s motion [15¨C18]. Experimental results by Hwang et al. [19] indicated that the Tsunamis run-ups are directly proportional to the incline beach plane and the run-ups are higher than the run-ups height proposed by Synolakis [13], and Hwang et al. [19] had conducted a study in water tank with 1/20 beach plane. Chang and Hwung [17] and Hsiao et al. [18]
%U http://www.hindawi.com/journals/mse/2013/720590/