Session IV:
Simulation of earthquake repture, wave propagation and standard models for different tectonic settings

2nd ACES (APEC Cooperation for Earthquake Simulation) Workshop in Japan



Broadband Frequency Ground Motion Simulation of the 1999 Kocaeli (Turkey) earthquake
Nelson Pulido, Tetsuo Kubo


Abstract

Broadband ground motion simulation of the 1999 Kocaeli (Turkey) earthquake was performed in the region around the fault plane. The methodology applied is aimed to produce ground motions in the 0.1Hz - 1.0Hz frequency band. The simulation is performed in low frequency (0.1-1.0Hz) and high frequency (1.0-10Hz) bands separately and then added at each station. The low frequency part is based on an asperity model determined from the slip distribution result of a Kinematic inversion. One point source is used to represent the low-frequency ground motion at each asperity. The high frequency part is obtained from an extended area representing each asperity. The empirical Green's function summation technique is applied, using an element waveform calculated stochastically that follows an omega square source model and regional attenuation of Q.

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