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Earthquakes and Structures Volume 10, Number 6, June 2016 , pages 1391-1404 DOI: https://doi.org/10.12989/eas.2016.10.6.1391 |
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Seismicity of Peninsular Malaysia due to intraplate and far field sources |
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Daniel W. Loi, Mavinakere E. Raghunandan and Varghese Swamy
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| Abstract | ||
| Peninsular Malaysia lying on the stable Sunda Plate has traditionally been considered safe with low to moderate seismicity. However, far field Sumatran mega-earthquakes have been shown to be capable of triggering ground motions felt in high rise structures in the major Malaysian cities while seismic impact from local earthquakes of moment magnitude 3.8 have reportedly induced nominal structural damages to nearby buildings. This paper presents an overview of the recent seismic activities in and around Peninsular Malaysia with reference to prominent earthquakes generated by far field interplate and local intraplate sources. Records of ground motion data and seismic hazard assessment (SHA) results available in the literature have been analyzed and discussed. The peak ground acceleration (PGA) values from historical records for few local intraplate events were observed to be higher than those for the events from Sumatran Subduction Zone. This clearly points to the need for a detailed and comprehensive SHA incorporating both far field and local sources. Such an analysis would contribute the knowledge required for secure and reliable infrastructure design and safeguard the Malaysian people and economy. | ||
| Key Words | ||
| seismic hazard; peak ground acceleration; far-field sources; intraplate source | ||
| Address | ||
| School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia | ||