Because many of the thrust faults in the Los Angeles area do not reach the ground surface,their sound waves do not reach the surface with audible strength,so they are called deaf thrusts.

Question

Quizplus · Accepted Answer

The term "deaf thrusts" is not used to describe thrust faults based on the audibility of their sound waves. The reason many thrust faults in the Los Angeles area are not visible at the surface is due to their blind nature, meaning they do not break the ground surface, but this does not relate to the audibility of sound waves they might produce during seismic events.

Because Many of the Thrust Faults in the Los Angeles