Temporary seismometers deployed at Mount St. Helens.
![Temporary seismometers deployed at Mount St. Helens....](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img5471.jpg?itok=ABk4Cia7)
Detailed Description
Between August 19-22, 2017, 140 seismometers were deployed around Mount St. Helens. Instruments were placed on top of the 2004-2008 lava dome, the 1980-86 lava dome, the 1980 crater floor, and around the volcanic cone. The goal of the month-long deployment was to capture small magnitude volcanic earthquakes and learn more about the shallow plumbing system beneath the crater floor.
Pictured, is a temporary seismometer, which resembles an insulated big-mouth thermos with spikes on the bottom. The seismometers store data on a small internal computer and have enough battery power to operate for about one month.
Image courtesy of Federica Lanza.
Sources/Usage
Public Domain.