Cascades Volcano Observatory

Multimedia

Filter Total Items: 432
People standing with lights in a dark cave
August 4, 2019

GeoGirls Venture into Ape Cave

GeoGirls venture into Ape Cave, a 2,000-year-old lava tube on the south flank of Mount St. Helens, as they learn about Mount St. Helens’ eruptive history and lava flows.

Girls stand in cave with headlamps lighting a book
August 4, 2019

GeoGirls Venture into Ape Cave II

GeoGirls venture into Ape Cave, a 2,000-year-old lava tube on the south flank of Mount St. Helens, as they learn about Mount St. Helens’ eruptive history and lava flows.

Landscape photo of mountains in distance with low clouds filling valley in mid-ground and pine tress on slope in foreground
October 10, 2018

Sunrise at Mount St. Helens

The sun rises at Mount St. Helens (pictured in the distance), with low-level clouds covering Coldwater Lake. The view is from the Coldwater Science and Learning Center, the site of the 2018 GeoGirls field camp program.

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 (“

September 25, 2018

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

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 (“

Girls look at water in bottles
August 1, 2018

GeoGirls_Sediment2

GeoGirls analyze volcanic sediment at the Coldwater Lake outlet.

Girls stand in pond
August 1, 2018

GeoGirls_Core

GeoGirls take core samples at a pond near the Hummocks Trail to study groundwater transport.

Hydrotherm example
December 31, 2017

Hydrotherm program output example

Example Hydrotherm output. Hydrotherm is a three-dimensional simulation of multiphase groundwater flow and heat transport in the temperature range of 0 to 1200 degrees Celsius and the pressure range of 1 to 1000 MPa.

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

...