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Development of Spectral Hazard Map for Indonesia with a Return Period of 2500 Years using Probabilistic Method

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Author(s): Asrurifak M. | Irsyam M. | Budiono B. | Triyoso W. | Hendriyawan Hendriyawan

Journal: Civil Engineering Dimension
ISSN 1410-9530

Volume: 12;
Issue: 1;
Start page: 52;
Date: 2010;
Original page

Keywords: spectral hazard map | 3-D Source model | total probability | peak ground acceleration

ABSTRACT
This study is performed to develop spectral hazard map for Indonesia with a Return Period of 2500 years earthquake. It will be proposed for revision of the Indonesian hazard map in SNI-03-1726-2002 as response to the meeting organized by the Department of Public Works on 27- October-2008 in Jakarta. The meeting has decided to revise the Indonesia hazard map by referring to IBC-2006 where spectral acceleration values at Peak Ground Acceleration/PGA, 0.2 and 1.0 second with a return period of 2500 year will be applied for general buildings. The spectral hazard map was analyzed using total probability method and three dimensional (3-D) source models with recent seismotectonic parameters. Four source models were used in this analysis, namely: shallow background, deep background, fault, and subduction source models. Generally, the results of analysis show the values of PGA with a return period of 2500 years relatively higher 1.2-3.0 times than in SNI-03-1726-2002.
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