ANALYSIS OF TSUNAMI HAZARD POTENTIAL USING TSUNAMI SIMULATION AT SUNDA STRAIT REGION

ANALYSIS OF TSUNAMI HAZARD POTENTIAL USING TSUNAMI SIMULATION AT SUNDA STRAIT REGION

Robiana, Rahayu * **
* Center for Volcanology and Geological Hazard Mitigation
** 2007, JICA Training Course, Nagoya University
e-mail : robiana_geo104@yahoo.com , rahayu@vsi.esdm.go.id

ABSTRACT

As a region in the line of trench, Sunda strait region have a very high probability to be attacked by earthquake and tsunami. To anticipate geological hazard were will occure in the future, especially by tsunami, we need to learn about hazard in this region. To determine tsunami hazard in this region, we use tsunami simulation for three tsunami source which have most high tsunami run up potential. Two tsunami sources parameters taken from the last tsunami occured at western and eastern part of sunda trench. One source placed along seismic gap for biggest earthquake which have possibility occured. Tsunami wave distribution from tsunami simulation in observation point, will be the discussion materials to decide tsunami hazard level along coastal in both provinces at sunda strait.

INTRODUCTION
Sunda strait region including Lampung and Banten province is located at western part of Indonesia. Lampung province is most southern part of Sumatera Island and Banten province is most western part of Java Island, connected by Sunda strait . Tsunami is unpredicted event which almost always forgoten by people because its has long event period, but always cause disastrous social and environment effect. Because of that, analysis of tsunami hazard is very important, especially for regions which never or after long period not happen but have potential of being attacked. Since tsunami Sumatera 2004 happened, tsunami prepardness and mitigation system become a big concern. For the purpose of preparing and improving tsunami awareness and mitigation system, this paper try studying about tsunami hazard potential at sunda strait region by using modelling tsunami generated by earthquake at seismic gap along Sunda trench around sunda strait with three different scenarios. Simulation result will be used to identify tsunami hazard level according to tsunami wave height attacking coastal areas........



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