Session topic


Title: Multi-scale numerical simulation of a tsunami using mesh adaptive methods
ID: P45
Type: Poster
Session: QF7
Poster quick fire session VII

Speaker: Joe Wallwork (London/GB)

Abstract - Text

Since the millennium two particular tsunamis, impacting the Indian Ocean rim in 2004 and Japan in 2011, caused enormous destruction and claimed very many lives. How can numerical modelling of tsunamis be made more efficient in order to provide better early warning systems?   One possible approach is to make use of adaptive meshes for use in solving the shallow water equations by the finite element method. Through adaptivity we can focus computational power where it is needed, accurately resolving the tsunami waves and especially those at important coastal locations, using a fine mesh. Using a coarser mesh elsewhere, we can keep the overall computational cost of the algorithm low.   My preliminary experimentation in solving the shallow water equations over the ocean domain surrounding Fukushima has been so far successful. I hope to illustrate the efficiency of a mesh-adaptive approach to the finite element method when solving this during the coming months.   Adaptivity has been shown to be effective in solving tsunami-type problems by [Behrens et al., 14] and [Davis and LeVeque, 16] and I hope to be able to reach similar conclusions within the period of my MRes project.