Natural Hazards and Earth System Science www.nat-hazards-earth-syst-sci.net 1561-8633 1684-9981 11 1 2011 10.5194/nhess-11-67-2011 http://www.nat-hazards-earth-syst-sci.net/11/67/2011/ http://www.nat-hazards-earth-syst-sci.net/11/67/2011/nhess-11-67-2011.html http://www.nat-hazards-earth-syst-sci.net/11/67/2011/nhess-11-67-2011.pdf 67 82 2011-01-05 Tsunami risk assessment in Indonesia G. Strunz guenter.strunz@dlr.de J. Post K. Zosseder S. Wegscheider M. Mück T. Riedlinger H. Mehl S. Dech J. Birkmann N. Gebert H. Harjono H. Z. Anwar Sumaryono R. M. Khomarudin A. Muhari German Remote Sensing Data Center, German Aerospace Center (DLR), Oberpfaffenhofen, Germany United Nations University, Institute for Environment and Human Security (UNU-EHS), Bonn, Germany Indonesian Institute of Sciences (LIPI), Research Center for Geotechnology, Bandung, Indonesia National Coordinating Agency for Surveys and Mapping (BAKOSURTANAL), Cibinong, Indonesia National Institute of Aeronautics and Space (LAPAN), Jakarta, Indonesia Ministry of Marine Affairs and Fisheries (DKP), Jakarta, Indonesia In the framework of the German Indonesian Tsunami Early Warning System (GITEWS) the assessment of tsunami risk is an essential part of the overall activities. The scientific and technical approach for the tsunami risk assessment has been developed and the results are implemented in the national Indonesian Tsunami Warning Centre and are provided to the national and regional disaster management and spatial planning institutions in Indonesia. <br><br> The paper explains the underlying concepts and applied methods and shows some of the results achieved in the GITEWS project (Rudloff et al., 2009). The tsunami risk assessment has been performed at an overview scale at sub-national level covering the coastal areas of southern Sumatra, Java and Bali and also on a detailed scale in three pilot areas. The results are provided as thematic maps and GIS information layers for the national and regional planning institutions. From the analyses key parameters of tsunami risk are derived, which are integrated and stored in the decision support system of the national Indonesian Early Warning Centre. 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