Natural Hazards and Earth System Science www.nat-hazards-earth-syst-sci.net 1561-8633 1684-9981 10 6 2010 10.5194/nhess-10-1085-2010 http://www.nat-hazards-earth-syst-sci.net/10/1085/2010/ http://www.nat-hazards-earth-syst-sci.net/10/1085/2010/nhess-10-1085-2010.html http://www.nat-hazards-earth-syst-sci.net/10/1085/2010/nhess-10-1085-2010.pdf 1085 1100 2010-06-07 A new multi-sensor approach to simulation assisted tsunami early warning J. Behrens joern.behrens@zmaw.de A. Androsov A. Y. Babeyko S. Harig F. Klaschka L. Mentrup Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany GFZ German Research Centre for Geosciences, Potsdam, Germany now at: University of Hamburg, KlimaCampus, Hamburg, Germany now at: GCN Consulting GmbH, Bregenz, Austria A new tsunami forecasting method for near-field tsunami warning is presented. This method is applied in the German-Indonesian Tsunami Early Warning System, as part of the Indonesian Tsunami Warning Center in Jakarta, Indonesia. The method employs a rigorous approach to minimize uncertainty in the assessment of tsunami hazard in the near-field. Multiple independent sensors are evaluated simultaneously in order to achieve an accurate estimation of coastal arrival times and wave heights within very short time after a submarine earthquake event. The method is validated employing a synthetic (simulated) tsunami event, and in hindcasting the minor tsunami following the Padang 30 September 2009 earthquake. Androsov, A., Harig, S., Behrens, J., Schröter, J., and Danilov, S.: Tsunami Modelling on Unstructured Grids: Verification and Validation, in: Proceedings of the International Conference on Tsunami Warning (ICTW), edited by: Adrianto, H., State Ministry of Research and Technology Republic of Indonesia (RISTEK), Jakarta, Indonesia, hdl:10013/epic.32421.d001, 2008. 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