Image of flyer for GeoGirls 2017 science field camp at Mount St. Helens which was held July 30 to August 3, 2017.
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Volcano Hazard Program images.
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GeoGirls 2017 science field camp at Mount St. Helens.
Image of flyer for GeoGirls 2017 science field camp at Mount St. Helens which was held July 30 to August 3, 2017.
Mount Baker, WA simplified hazards map
Mount Baker, Washington simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.
Mount Baker, Washington simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.
Medicine Lake, CA simplified hazards map
Medicine Lake, California simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.
Medicine Lake, California simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.
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.
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.
Dr. Jacob Lowenstern leading a field trip Yellowstone National Park
Dr. Jacob Lowenstern, Scientist-in-Charge of the Yellowstone Volcano Observatory during 2002-2017. In this photo, he's leading a field trip in Yellowstone National Park with a group of international volcanologists.
Dr. Jacob Lowenstern, Scientist-in-Charge of the Yellowstone Volcano Observatory during 2002-2017. In this photo, he's leading a field trip in Yellowstone National Park with a group of international volcanologists.
Mount Jefferson, OR simplified hazards map
Mount Jefferson, Oregon simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.
Mount Jefferson, Oregon simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.
Happy birthday Pu‘u ‘Ō‘ō! A look back at what happened in 2018
Glow from an active ocean entry on Kīlauea Volcano's Kamokuna lava delta was visible on the evening of September 27, when the 2017 delta was near its maximum size of 8-10 acres. Since then, the edges of the delta began to crumble into the sea. With no lava entering the ocean since November, ocean waves slowly erode the lava delta, further reducing its size.
Glow from an active ocean entry on Kīlauea Volcano's Kamokuna lava delta was visible on the evening of September 27, when the 2017 delta was near its maximum size of 8-10 acres. Since then, the edges of the delta began to crumble into the sea. With no lava entering the ocean since November, ocean waves slowly erode the lava delta, further reducing its size.
Evolving tube network blocked and diverted lava from Kamokuna delta
Thermal map of the 61g lava flow, created on December 12, 2017. The thermal map is limited to the current flow (episode 61g flow), which runs along the center of the map. The blue and green colors correspond to lower surface temperatures, areas of cooled, inactive lava.
Thermal map of the 61g lava flow, created on December 12, 2017. The thermal map is limited to the current flow (episode 61g flow), which runs along the center of the map. The blue and green colors correspond to lower surface temperatures, areas of cooled, inactive lava.
Channelized breakouts on the pali
Channelized breakouts were active on the pali today, feeding a small ‘A‘ā flow moving through the remains of a small Kīpuka.
Channelized breakouts were active on the pali today, feeding a small ‘A‘ā flow moving through the remains of a small Kīpuka.
An image from a Halema‘uma‘u time-lapse camera taken on Dec. 5 at 4...
An image from a Halema‘uma‘u time-lapse camera taken on December 5 at 4:41 am, just after the collapse. The portion of the rim that fell into the Halema‘uma‘u lava lake triggered intense spattering on the lake margin where the material impacted the lake.
An image from a Halema‘uma‘u time-lapse camera taken on December 5 at 4:41 am, just after the collapse. The portion of the rim that fell into the Halema‘uma‘u lava lake triggered intense spattering on the lake margin where the material impacted the lake.
Illustration of the basic process of magma formation, movement to s...
Illustration of the basic process of magma formation, movement to the surface, and eruption through a volcanic vent.
Illustration of the basic process of magma formation, movement to the surface, and eruption through a volcanic vent.
Progress can be slow but adds up
Geologist examines spatter and ash deposits within Hawai‘i Volcanoes National Park along Kīlauea's southwest rift zone. New understanding of the age of the ash deposits, based on years of careful research, has prompted an important revision of the ages of these surface lava flows. USGS photograph by Tim Orr, November 6, 2015.
Geologist examines spatter and ash deposits within Hawai‘i Volcanoes National Park along Kīlauea's southwest rift zone. New understanding of the age of the ash deposits, based on years of careful research, has prompted an important revision of the ages of these surface lava flows. USGS photograph by Tim Orr, November 6, 2015.
Scientists perform maintenance on volcano monitoring stations in th...
Scientists perform maintenance on volcano monitoring stations in the crater of Mount St. Helens.
Scientists perform maintenance on volcano monitoring stations in the crater of Mount St. Helens.
Jan is Volcano Awareness Month on the Island of Hawai‘i
The dark-colored ‘A‘ā flow advancing toward the South Kona coastal village of Ho‘ōpūloa (foreground) on April 17, 1926, is a reminder of why Island of Hawai‘i residents should be aware of the hazards posed by the volcanoes on which they live. This flow was fed by eruptive vents that opened high on Mauna Loa's Southwest Rift Zone three days earlier.
The dark-colored ‘A‘ā flow advancing toward the South Kona coastal village of Ho‘ōpūloa (foreground) on April 17, 1926, is a reminder of why Island of Hawai‘i residents should be aware of the hazards posed by the volcanoes on which they live. This flow was fed by eruptive vents that opened high on Mauna Loa's Southwest Rift Zone three days earlier.
61g breakouts on coastal plain
On Tuesday, December 5, while mapping the 61g lava flow field, HVO geologists found that the active breakouts closest to the emergency route were 1.8 km (1.1 miles) from the gravel road. This spiny pāhoehoe breakout was small, about one meter (yard) in size, and weak.
On Tuesday, December 5, while mapping the 61g lava flow field, HVO geologists found that the active breakouts closest to the emergency route were 1.8 km (1.1 miles) from the gravel road. This spiny pāhoehoe breakout was small, about one meter (yard) in size, and weak.
61G Lava Breakout
Video of an active breakout of the Pu‘u ‘Ō‘ō episode 61G lava flow. This breakout is below the pali on the eastern margin of the flow. pāhoehoe lava is flowing out from the base of an inflated tumulus, and has a characteristic blue tint to its surface crust (compared to the color of solidified lava around it).
Video of an active breakout of the Pu‘u ‘Ō‘ō episode 61G lava flow. This breakout is below the pali on the eastern margin of the flow. pāhoehoe lava is flowing out from the base of an inflated tumulus, and has a characteristic blue tint to its surface crust (compared to the color of solidified lava around it).
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.
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.
Did aerial bombing stop the 1935 Mauna Loa lava flow?
Aerial view of a bomb detonating on Mauna Loa near the 8500-foot elevation source of the 1935 lava flow on the morning of December 27, 1935. This was one of twenty 600-pound bombs dropped on the lava flow that morning by the Army Bombing Squadron from Luke Field, O‘ahu. Photo by Army Air Corps, 11th Photo Section.
Aerial view of a bomb detonating on Mauna Loa near the 8500-foot elevation source of the 1935 lava flow on the morning of December 27, 1935. This was one of twenty 600-pound bombs dropped on the lava flow that morning by the Army Bombing Squadron from Luke Field, O‘ahu. Photo by Army Air Corps, 11th Photo Section.
What do we call new land at Kīlauea's ocean entries?
Kīlauea Volcano's Kamokuna lava delta on October 6, 2017. Multiple streams of lava entering the ocean on both sides of the delta created small plumes of laze (lava haze). The visible part of the delta, which is deceptively stable, was built by many small lava flows accumulating on an unstable foundation of unconsolidated volcanic rock fragments. USGS photo by L.
Kīlauea Volcano's Kamokuna lava delta on October 6, 2017. Multiple streams of lava entering the ocean on both sides of the delta created small plumes of laze (lava haze). The visible part of the delta, which is deceptively stable, was built by many small lava flows accumulating on an unstable foundation of unconsolidated volcanic rock fragments. USGS photo by L.
Typical lava lake activity at Kīlauea's summit
Kīlauea Volcano's summit lava lake activity over the past few days has been typical, with intermittent sites of spattering and migration of the crust from north to south (top to bottom of image). This view of the lava lake was captured on the evening of Saturday, November 18.
Kīlauea Volcano's summit lava lake activity over the past few days has been typical, with intermittent sites of spattering and migration of the crust from north to south (top to bottom of image). This view of the lava lake was captured on the evening of Saturday, November 18.