An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
These animations were assembled in partnership with the USGS Volcano Hazards Program, the Forest Service, and the Mount St. Helens Institute. Each short animation illustrates how scientists observe the volcano for signs of rising magma.
Volcano Deformation
Video Transcript
Sources/Usage: Public Domain.
Volcano Deformation (duration 0:54 minutes) – USGS geologist, Dan Dzurisin, describes techniques used to measure ground movement at volcanoes.
Volcano Gas Monitoring
Video Transcript
Sources/Usage: Public Domain.
Volcano Gas Monitoring (duration 1:21 minutes) – USGS geologist, Cindy Werner, describes techniques used to measure volcanic gases at volcanoes.
Volcano Seismic Monitoring
Video Transcript
Sources/Usage: Public Domain.
Volcano Seismic Monitoring (duration 1:04 minutes) – This video describes techniques used to measure seismic activity, which cause earthquakes, at volcanoes.