Modeling Indian Ocean Tsunami Propagation and Inundation with TsunamiClaw---Adaptive Finite Volume Methods.

TsunamiClaw is a freely available software package that we have been developing to model free surface depth- averaged flows such as the shallow water equations for tsunami modeling. The underlying numerical methods are based on adaptive finite volume methods for wave propagation that we extended to tsunami modeling prior to the December 2004 Indian Ocean Tsunami. The adaptive Cartesian gridding allows global-scale teletsunamis and local inundation to be modeled in single and efficient computations by using multiple evolving grids to track waves. Though adaptive mesh refinement presents some new difficulties, we believe that it is a powerful solution to the problem of disparate spatial and temporal scales exhibited by tsunamis, and it allows large as well as detailed simulations on small personal computers. The initialization of the tsunami is generated by dynamically moving the seafloor bottom during the computation according to spatial temporal models of fault displacement for a given seismic event. We have modeled Indian Ocean tsunamis for multiple fault models of different Sumatran seismic events. Various simulations will be shown demonstrating tsunami propagation and inundation with different fault models. Additionally some case studies of local inundation will be shown. We hope that this will provide comparison with other numerical models as well as field studies.