Northridge Earthquake

SCEC researchers are planning simulations of the Northridge Earthquake. Planning information about these simulations is posted below:

Source Description

Sam Shi (SDSU) has created a few different sources that looks reasonably good in terms of rupture complexity, PGAs and frequency content (flat up to ~10 Hz, similar to the strike-slip case) of the ground motions. Following are some animations, made for a case with 1D SoCal velocity structure:

• Animation of slip rate on the fault
• Animation of vertical acceleration on the free surface:
• Animation of vertical acceleration at cross-section plane x1 = 16 km:

Note that in the plots/animations involving map view of the free surface, the rectangle box denotes the surface projection of the fault slip plane and the dashed line denotes the intersection of the dipping fault plane with the free surface. The star symbol denotes the epicenter location.

Figures in the attached file shows results from another case with an extended model but with a half-space velocity structure.