Seismic Waves
By Earthquake Hazards Program
2021 (approx.)
![Seismic waves](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/seismogram.gif?itok=tsMnSv50)
Detailed Description
A seismogram is a record written by a seismograph in response to ground motions produced by an earthquake, explosion, or other ground-motion sources.