Boussinesq systems in two space dimensions over a variable bottom for the generation and propagation of tsunami waves

Details Boussinesq systems in two space dimensions over a variable bottom for the generation and propagation of tsunami waves Boussinesq systems in two space dimensions over a variable bottom for the generation and propagation of tsunami waves

2009-06-13

arxiv.org/abs/0906.2491v2

Physics

Fluid Dynamics

Scientific paper

Considered here are Boussinesq systems of equations of surface water wave theory over a variable bottom. A simplified such Boussinesq system is derived and solved numerically by the standard Galerkin-finite element method. We study by numerical means the generation of tsunami waves due to bottom deformation and we compare the results with analytical solutions of the linearized Euler equations. Moreover, we study tsunami wave propagation in the case of the Java 2006 event, comparing the results of the Boussinesq model with those produced by the finite difference code MOST, that solves the shallow water wave equations.

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