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.
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Images related to Cascades Volcano Observatory.
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.
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
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
GeoGirls hike onto the Pumice Plain to learn more about Mount St. Helens’ historical
eruptions.
GeoGirls hike onto the Pumice Plain to learn more about Mount St. Helens’ historical
eruptions.
High-resolution digital elevation dataset for Newberry Volcano and vicinity, Oregon, based on lidar survey of August-September, 2010 and bathymetric survey of June, 2001.
High-resolution digital elevation dataset for Newberry Volcano and vicinity, Oregon, based on lidar survey of August-September, 2010 and bathymetric survey of June, 2001.
GeoGirls learn about how the May 18, 1980 eruption of Mount St. Helens impacted the ecology of the area.
GeoGirls learn about how the May 18, 1980 eruption of Mount St. Helens impacted the ecology of the area.
Graphic shows an east to west cut-away of Mount St. Helens with an interpreted model of seismic wave speeds under the volcano and earthquakes from 2008-2016. The colors of the model represent changes in seismic p-wave velocities from tomographic studies (Waite and Moran, 2009; doi:10.1016/j.jvolgeores.2009.02.009).
Graphic shows an east to west cut-away of Mount St. Helens with an interpreted model of seismic wave speeds under the volcano and earthquakes from 2008-2016. The colors of the model represent changes in seismic p-wave velocities from tomographic studies (Waite and Moran, 2009; doi:10.1016/j.jvolgeores.2009.02.009).
Paulina Lake, in the caldera of Newberry Volcano. View looking south-southeast.
Paulina Lake, in the caldera of Newberry Volcano. View looking south-southeast.
The top plot is the number of located earthquakes per week from the Pacific Northwest Seismic Network's catalog. The bottom plot shows the earthquake depths with time. Earthquakes are plotted as circles with the size of the circle corresponding to the magnitude of the earthquake (see legend).
The top plot is the number of located earthquakes per week from the Pacific Northwest Seismic Network's catalog. The bottom plot shows the earthquake depths with time. Earthquakes are plotted as circles with the size of the circle corresponding to the magnitude of the earthquake (see legend).
Map view plot of earthquakes located by the Pacific Northwest Seismic Network from March 14, 2016 through May 4, 2016. Only high-quality locations are shown (8 or more observations with a 130 degree gap or less between observing stations).
Map view plot of earthquakes located by the Pacific Northwest Seismic Network from March 14, 2016 through May 4, 2016. Only high-quality locations are shown (8 or more observations with a 130 degree gap or less between observing stations).
During the first few days of Mount St. Helen's earthquake swarm in March 2016, the September Lobe monitoring station (located on the 1980-86 dome) was buried in deep snow and not transmitting data.
During the first few days of Mount St. Helen's earthquake swarm in March 2016, the September Lobe monitoring station (located on the 1980-86 dome) was buried in deep snow and not transmitting data.
USGS scientists Kate Allstadt and Cynthia Gardner tell the story of the May 18, 1980 eruption of Mount St. Helens and how the catastrophic landslide, lateral blast, and lahar changed the landscape.
USGS scientists Kate Allstadt and Cynthia Gardner tell the story of the May 18, 1980 eruption of Mount St. Helens and how the catastrophic landslide, lateral blast, and lahar changed the landscape.
Newberry Volcano's youngest lava flows. Source: Robinson, J.E., Donnelly-Nolan, J.M., and Jensen, R.A., 2015, Newberry Volcano’s Youngest Lava Flows: U.S. Geological Survey Scientific Investigations Map 3329, 1 sheet, https://dx.doi.org/10.3133/sim3329.
Newberry Volcano's youngest lava flows. Source: Robinson, J.E., Donnelly-Nolan, J.M., and Jensen, R.A., 2015, Newberry Volcano’s Youngest Lava Flows: U.S. Geological Survey Scientific Investigations Map 3329, 1 sheet, https://dx.doi.org/10.3133/sim3329.
Path of small debris flows originating above Butte Camp, Mount St. Helens, Washington.
Path of small debris flows originating above Butte Camp, Mount St. Helens, Washington.
Debris flow in channel near Butte Camp, Mount St. Helens, Washington.
Debris flow in channel near Butte Camp, Mount St. Helens, Washington.
Mount Hood Spectrograms for August 21, 2015.
Mount Hood Spectrograms for August 21, 2015.
Land Remote Sensing Image of Mount St. Helens on May 22, 1983. The volcanic blast on May 18, 1980, devastated more than 150 square miles of forest within a few minutes. In this Landsat false-color images, forest appears as bright red interspersed with patches of logging. Snow appears white, and ash is gray.
Land Remote Sensing Image of Mount St. Helens on May 22, 1983. The volcanic blast on May 18, 1980, devastated more than 150 square miles of forest within a few minutes. In this Landsat false-color images, forest appears as bright red interspersed with patches of logging. Snow appears white, and ash is gray.
Flyer for the Mount St. Helens Teacher Workshop. Held June 25-27, 2014, it was a workshop for middle school teachers.
Flyer for the Mount St. Helens Teacher Workshop. Held June 25-27, 2014, it was a workshop for middle school teachers.
USGS-CVO Research Geologist Peter Kelly communicates with the helicopter pilot and prepares for pick-up, on the new dome within the crater of Mount St. Helens.
USGS-CVO Research Geologist Peter Kelly communicates with the helicopter pilot and prepares for pick-up, on the new dome within the crater of Mount St. Helens.
USGS researcher Jeff Wynn monitors in-coming data at the CSAMT (Controlled-Source Audio-Magnetotellurics ) receiver site on Mount St. Helens. The data will be used to locate the top of the groundwater system beneath the site.
USGS researcher Jeff Wynn monitors in-coming data at the CSAMT (Controlled-Source Audio-Magnetotellurics ) receiver site on Mount St. Helens. The data will be used to locate the top of the groundwater system beneath the site.
The new volcanic-gas monitoring station installed at Mount St. Helens consists of weather monitoring equipment and sensors for measuring the concentrations of water vapor (H2O), carbon dioxide (CO2), sulfur dioxide (SO2), and hydrogen sulfide (H2S) in volcanic gas plumes.
The new volcanic-gas monitoring station installed at Mount St. Helens consists of weather monitoring equipment and sensors for measuring the concentrations of water vapor (H2O), carbon dioxide (CO2), sulfur dioxide (SO2), and hydrogen sulfide (H2S) in volcanic gas plumes.
Mauve indicates areas at risk from lava flows and avalanches of hot rock and gases called pyroclastic flows. Bright red areas that fade to orange and yellow indicate potential routes for lahars (volcanic mudflows). Not shown are areas subject to hazards from volcanic ash.
Mauve indicates areas at risk from lava flows and avalanches of hot rock and gases called pyroclastic flows. Bright red areas that fade to orange and yellow indicate potential routes for lahars (volcanic mudflows). Not shown are areas subject to hazards from volcanic ash.