Modification of Published Prediction Model of Ground Motion due to Sumatra Subduction Earthquakes for the Application in Peninsular Malaysia

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Establishment of ground motion prediction model that is able to accurately predict ground motion for Peninsular Malaysia is always a challenge to local researchers due to the paucity of strong ground motion data. In this study, Fukushima and Tanaka (1990) model which was identified as the best prediction model in estimating ground motion in Peninsular Malaysia due to earthquakes originated from Sumatra subduction zone in previous study was modified in order to enhance its performance. Multiple regression analysis was conducted based on supplementation of 212 seismograms, which were produced by 32 subduction events ranging from Mw 5.2 to 9.1 from Sumatra. The modified Fukushima and Tanaka model is expected to perform well in estimating ground motion from NEHRP Class C and D in the distance range of 300 to 1200 km. The appropriateness of the modified model was verified with actual ground motion in Peninsular Malaysia and also through comparison with other published models that are popular in the region.

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34-39

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October 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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