Monitoring and Research


Video showing low-frequency ground motions from a computer simulation of an M 7.0 earthquake on the Salt Lake City segment of the Wasatch fault (Roten et al. 2011).  The colors show ground velocities in the east-west direction at the earth's surface.  Plots of ground velocity versus time are shown at selected sites.  In this particular earthquake scenario, the fault break starts 10 miles below the southern end of the Salt Lake Valley and then propagates upward and northward.