9.1.1 Strike-Slip FaultNext9.1 Finite-Element Models9.1.2 Thrust Fault

9.1.2 Thrust Fault

The domain with dimensions shown in figure 9.2 contains a 9.9 km long and 11.2 km wide thrust fault that dips 35 degrees to the south. We bury the fault 5.3 km below the ground surface, and impose shear stresses on the fault surface 105 degrees from the strike to the east. Table 9.2 gives the sizes of the finite-element model created at coarse refinement using IDEAS and after 2x refinement.

Figure 9.2: Orthographic projection of the domain geometry for the thrust fault. The label HA denotes the location of the hypocenter. We will examine the waveforms at site S1.
Resolution # Nodes # Elements
Coarse 4900 24,000
2x refinement 39,000 190,000
Table 9.2: Sizes of the finite-element models at various resolutions for the domain containing the thrust fault.

Brad Aagaard, October 5, 2000

9.1.1 Strike-Slip FaultNext9.1 Finite-Element Models9.1.2 Thrust Fault