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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 256-259Stochastic Simulation of Ground Motions of the...

Stochastic Simulation of Ground Motions of the Wenchuan Earthquake Using Slip-Based Corner Frequency and Scaling Factor

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Abstract:

Ground motions of the great Wenchuan earthquake were simulated using stochastic simulation technique with an improved source spectral model. In the model, the corner frequency for each subfault is determined based on a basic value calculated from the total seismic moment of the entire fault and an increment depending on the seismic moment assigned to the subfault. The model also includes a slip-based scaling factor accounts for the difference of the radiated energy from each subfault. The simulated ground motions were compared to those from using the source spectral model with dynamic corner frequency in terms of the mean spectral ratio over the 52 stations amd to the observation in terms of 5% damped response spectra. Based on the comparison, the effects of the slip-based corner frequency and the scaling factor on the simulation were discussed.

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Periodical:

Applied Mechanics and Materials (Volumes 256-259)

Pages:

2127-2135

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.256-259.2127

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Online since:

December 2012

Authors:

Xiao Dan Sun, Xia Xin Tao, Cheng Qing Liu

Keywords:

Corner Frequency, Scaling Factor, Source Spectral Model, Stochastic Simulation

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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