Investigation of Frequency-Dependent Seismic Source for BroadbandGround Motion Simulation

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Estimates of broadband source processes are essential to perform broadband ground motion simulation from long- to short-period ranging around 0.1 to 10 s. This study focused on frequency-dependent source images and proposed source models for broadband ground motion simulation, especially targeting on large earthquakes. As results, we developed the double-corner source spectral model to simulate long-period and short-period ground motions and validated the methodology to extend slip velocity time functions into shorter period range.