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Volcano Hazard Program images.
On January 8, 2018, Kīlauea Volcano's summit lava lake level was 38 m (125 ft) below the rim of "Overlook crater," the small crater that formed above the active vent in Halema‘uma‘u.
On January 8, 2018, Kīlauea Volcano's summit lava lake level was 38 m (125 ft) below the rim of "Overlook crater," the small crater that formed above the active vent in Halema‘uma‘u.
First high-definition thermal image of the Halema‘uma‘u lava lake in the New Year, taken shortly after midnight on January 1, 2018. This camera was deployed to track the dynamic surface activity of the lava lake at the summit of Kīlauea.
First high-definition thermal image of the Halema‘uma‘u lava lake in the New Year, taken shortly after midnight on January 1, 2018. This camera was deployed to track the dynamic surface activity of the lava lake at the summit of Kīlauea.
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.
Heather Wright is a physical volcanologist who works with the USGS-USAID Volcano Disaster Assistance Program.
Heather Wright is a physical volcanologist who works with the USGS-USAID Volcano Disaster Assistance Program.
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, 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.
Horizontal displacements from campaign (black vectors) and continuous (red vectors, with station names given) GPS stations, as well as vertical displacements (indicated by color of GPS station symbol) near South Sister, Oregon. Length of arrow gives amount of horizontal displacement, with scale in lower left showing an arrow length
Horizontal displacements from campaign (black vectors) and continuous (red vectors, with station names given) GPS stations, as well as vertical displacements (indicated by color of GPS station symbol) near South Sister, Oregon. Length of arrow gives amount of horizontal displacement, with scale in lower left showing an arrow length
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.
Image of flyer for GeoGirls 2017 science field camp at Mount St. Helens which was held July 30 to August 3, 2017.
Image of flyer for GeoGirls 2017 science field camp at Mount St. Helens which was held July 30 to August 3, 2017.
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.
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.
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 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 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.
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.
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.
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.
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.
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.
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 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.