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Science in the spotlight: Numerical Modelling of Tsunamis

Continental Shelf Research Volume 79, 15 May 2014, Pages 46–53, Numerical Modelling of Tsunamis, Tsunami flood modelling for Aceh & west Sumatra and its application for an early warning system

B.A.D. Van Veen, D. Vatvani, F. Zijl

For implementation of a regional Tsunami Early Warning System (EWS) in Sumatra island in Indonesia, a set of detailed and accurate tsunami propagation and flooding models using Delft3D were developed. The purpose of the models was not only to reproduce the 2004 Indian Ocean tsunami, but also to determine tsunami flood hazard maps with different return periods. The model outputs have then been used to build a tsunami flooding database covering 1250 hypothetical sources for different earthquake parameters along the Sunda Trench for an EWS called RiskMap. The model simulations produced detailed information of near-shore tsunami wave height, tsunami inundation length and run-up. Smart storage of computational results, in a geo-referenced database, allows quick access to the requisite information. The result is a system capable of issuing a warning within few minutes after a detection of an earthquake. The system has been successfully installed and tested in the last two years at national and regional emergency coordination centres, National Agency for Meteorology, Climatology and Geophysics (BMKG) and at Tsunami Disaster Mitigation Research Centre (TDMRC) in Banda Aceh.

For more info and 3.200+ Delft3D publications, please go to: http://oss.deltares.nl/web/delft3d/publications or http://www.sciencedirect.com/science/article/pii/S0278434312002476

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