DOI Number : 10.5614/j.eng.technol.sci.2014.46.1.6
Hits : 5

Estimation of SH-Wave Amplification
in the Bandung Basin Using Haskellís Method


Laboratorium Seismology, Faculty of Mining and Petroleum Engineering,
Institut Teknologi Bandung, Jalan Ganesha No 10, Bandung 40132, Indonesia

Abstract. The Bandung basin is a large basin in Indonesia surrounded by mountains that are associated with faults. There is the possibility of earthquakes generated by these faults shaking populated areas in the basin. The consequences will be worse because the shaking is amplified by the sediment layer of the basin. We have estimated the amplification of SH-waves generated by the Lembang fault using Haskellís method for multilayer models. The pattern of amplification is a decreasing value with increasing distance from the Lembang fault. This pattern is valid for low-frequency incident waves. For higher-frequency incident waves, the pattern looks more complicated. Fortunately, there are many areas with low amplification values. Hopefully, this result will help the local government in making decisions regarding construction planning in this region. Of course, the final objective is to reduce earthquake risks.

Keywords: amplification factor; basin sediment structure; earthquake mitigation; frequency and incidence angle dependence; Haskellís method.

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