We studied the effects of the dynamic rupture process on ground motion of the 1999 Chi-Chi (Taiwan) earthquake. For this purpose, the causative fault of the earthquake was divided in two vertical cross sections. These sections were chosen to represent the epicentral area (southern model) and the northern part (northern model) of the fault. Each section was modeled independently by using a 2D discrete element model (DEM). In order to study the effects of the faulting when the rupture does not break the surface, the southern model was used forcing the rupture process to stop 3 km before reach the...

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