Sep 4, 2009, 1:37:19 PM (14 years ago)

some additions relating to Zhang paper

1 edited


  • anuga_work/publications/boxing_day_validation_2008/method.tex

    r7480 r7481  
    11\section{Modelling the Event}\label{sec:models}
    22Numerous models are currently used to model and predict tsunami
    3 generation, propagation and run-up~\cite{titov97a,satake95}. Here we
     3generation, propagation and run-up. These range in solving different equations and employing
     4different methodologies with some examples being~\cite{titov97a,satake95,zhang08}. Here we
    45introduce the modelling methodology employed by Geoscience Australia
    56to illustrate the utility of the proposed benchmark. The methodology used by Geoscience Australia has three distinct components. Firstly an appropriate model is used to approximate the initial sea surface deformation. This model is chosen according to the cause of the intial disturbance. The resulting wave is propagated using the \textsc{ursga} model (see Section~\ref{sec:ursga}) in the deep ocean until the wave reaches shallow water, typically the $100$ m depth contour. The ocean surface profile along this contour is used as a time varying boundary condition for the \textsc{anuga} model (see Section~\ref{sec:anuga}) which simulates the propagation of the tsunami within the shallow water and the subsequent inundation of the land. This three part methodology roughly follows the three stages of tsunami evolution. The components used to model each stage of evolution are described in more detail below.
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