After the Tsunami in December, 2004, it was decided to implement a Tsunami Early Warning System (GITEWS) www.gitews.org in Indonesia. The project is funded by the German Government and is accomplished by a consortium of nine German institutions. In this context DHI cooperates with GKSS in a work package modelling the run-up of Tsunami waves.
This run-up includes the processes of Tsunamis entering very shallow coastal waters and the propagation further inland. The modelling will be conducted using DHI's modelling systems MIKE 21 HD and MIKE 21 BW.
In order to resolve coastal properties, bathymetric features, and the Tsunami signal itself a very high spatial model resolution is required. However, the high resolution is very expensive computationally vice making the detailed models inappropriate for decision support in real time (often the lead time is less than one hour). Consequently a number of detailed simulations will be made during the project in order to establish a "database" of possible scenarios. The computational results of these scenarios will go into the decision support system of the warning centre.
