Abstract
Shallow water equations were analyzed numerically for simulation of tsunami propagation from the source area to coastal zone of Mentawai Islands along West Sumatra Island. A triangular mesh was set for spatial discretization and a system of partial differential equation is reduced to a system of ordinary differential equations. Initial displacement based on Okada model was applied. Our numerical techniques were demonstrated with a simulation of tsunami generated from an earthquake with epicenter near South Pagai Island, Mentawai Islands, Indonesia.
Highlights
IntroductionEt al [2] computed 25th, October 2010, Mentawai Islands coastal tsunami heights from the tsunami source model which was proposed from a field survey and waveform recording with linear equations
The slip distributions on the fault planes were estimated through the inversion of tsunami waveform, whereas the strikes and rakes were estimated from USGS W phase solution
A system of partial differential equations consisting of momentum equations and a continuity equation were used, and reduced by using discretization based on a triangular mesh to a system of ordinary differential equations
Summary
Et al [2] computed 25th, October 2010, Mentawai Islands coastal tsunami heights from the tsunami source model which was proposed from a field survey and waveform recording with linear equations. The slip distributions on the fault planes were estimated through the inversion of tsunami waveform, whereas the strikes and rakes were estimated from USGS W phase solution. In this study the propagation of tsunami waves generated in Mentawai Islands segment were studied numerically. The earthquake fault plane parameters based on Satake, et al [2] were used for computation with Okada theory [4,5]. Numerical results illustrate the tsunami waves propagation generated by the 2010 Mentawai Islands earthquake
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