Global Volcanism Program | Image GVP-05232
Seismometers such as this one installed near Mount Spurr volcano (on skyline in background) provide the Alaska Volcano Observatory with a continuous, telemetered record of volcanic earthquakes. Scientists use this data to monitor earthquake types, locations, and magnitudes to decipher different processes under and within a volcano.
Photo by Christina Neal, 1993 (Alaska Volcano Observatory, U.S. Geological Survey).
This image is made available as a Public Domain Work, but proper attribution is appreciated.
Galleries: Volcano Monitoring