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Seismic station VALT, in the crater of Mount St. Helens, detects sm...

By Volcano Hazards Program
Seismic station VALT, in the crater of Mount St. Helens, detects sm...
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Detailed Description

Seismic station VALT, in the crater of Mount St. Helens, detects small earthquakes on March 16-18, 2016. Note that the seismic station also detects a helicopter noise (middle of the graphic) and wind (bottom of the graphic).

Sources/Usage

Public Domain.


USGS-CVO