Volcano Monitoring
By Communications and Publishing
2018 (approx.)
![volcano monitoring](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/monitoring_graphic.png?itok=N7QvmE-u)
Detailed Description
The USGS measures the activity level of a volcano with several different types of instruments. This graphic represents types of volcano monitoring in the corners, with associated methods used in italics.
Sources/Usage
Public Domain.