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September 25, 2018

First mission: USGS UAS monitors gas emissions at Mount St. Helens —AD

On September 25, 2018, a team of three scientists based at the USGS–Cascades Volcano Observatory conducted the first-ever USGS-led Unmanned Aircraft Systems (UAS) campaign at Mount St. Helens. The UAS survey was conducted with the permission and coordination of the U.S. Forest Service Mount St. Helens National Volcanic Monument.

The team used a multi-rotor UAS (“

Mount St. Helens as viewed from the ENE....
December 5, 2017

Mount St. Helens as viewed from the ENE.

Mount St. Helens, as viewed from the East-Northeast. The inside of the crater rim is just visible in the upper right of the mountain.

Legacy of the Mount St. Helens 1980 eruption still defies perfect s...
September 28, 2017

Legacy of Mount St. Helens 1980 eruption still defies perfect solution

Aerial view of Spirit Lake (center) looking north from above the crater of Mount St. Helens. The lake's outlet to the west (left) was blocked by the 1980 landslide, which required a new engineered outlet to maintain the lake at a safe level. A tunnel was drilled through a bedrock ridge on west side of lake in 1984-1985. Glacier covered Mount Rainier in distance. USGS photo

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Temporary seismometers deployed at Mount St. Helens....
August 20, 2017

Temporary seismometers deployed at Mount St. Helens.

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

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A geologist remembers the Mount St. Helens eruption 37 years ago...
May 11, 2017

A geologist remembers the Mount St. Helens eruption 37 years ago

Aerial view of the May 18, 1980, eruption of Mount St. Helens as seen from the southwest. Columns of ash and volcanic gas reached heights of more than 24 km (80,000 ft) during the eruption.

A geologist remembers the Mount St. Helens eruption 37 years ago...
May 11, 2017

A geologist remembers the Mount St. Helens eruption 37 years ago

USGS geologist Don Swanson (in red) and his colleague, Jim Moore, view a car filled with ash deposits from the May 18, 1980, eruption of Mount St. Helens. Additional photos of the 1980 eruption of Mount St. Helens are posted on the USGS Cascades Volcano Observatory website: https://volcanoes

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Mount St. Helens monitoring station SEP during temporary installati...
April 21, 2017

Mount St. Helens monitoring station SEP during temporary installati...

Mount St. Helens monitoring station SEP during temporary installation of a 20 foot mast to restore data flow after heavy snow buried the site and cut off seismic data transmission.

The fiberglass hut that housed the electronics was crushed under the snow load and will need to be rebuilt summer 2017. The solar panel can be seen sticking out of the hut and is level

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Mount St. Helens monitoring station SEP buried in about 10-15 ft of...
April 21, 2017

Mount St. Helens monitoring station SEP buried in about 10-15 ft of...

Mount St. Helens monitoring station SEP buried in about 10-15 ft of snow. Station stands approximately 8 ft tall and is located to the right of the person in this photo. April 21, 2018

Girls points to a location on a map laying on the ground.
December 31, 2016

GeoGirls learn about the eruption of Mount St. Helens

GeoGirls learn about how the May 18, 1980 eruption of Mount St. Helens impacted the ecology of the area.