USGS Frequently Asked Questions

Answer:

1. Estimate what EQ of what size are likely to occur (geology)
2. Given the EQ size we then estimate what the shaking will be (seismology)
3. Given the shaking we estimate the response of different types of buildings (EQ engineering). Only with all these steps can we take steps as society to enact building codes and retrofitting programs to make our community safer.

For further information, see:

Preparedness Information - Earthquake Hazards Program