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Volcano Hazard Program images.
A US Army helicopter from Pohakuloa Training Area flies overhead of palila researchers on Mauna Kea volcano, Hawai‘i Island, Hawai‘i.
A US Army helicopter from Pohakuloa Training Area flies overhead of palila researchers on Mauna Kea volcano, Hawai‘i Island, Hawai‘i.
Glacier Peak is the tallest peak amongst a sea of many mountains in northern Washington.
Glacier Peak is the tallest peak amongst a sea of many mountains in northern Washington.
Upper west face of Glacier Peak, Washington.
Upper west face of Glacier Peak, Washington.
SEM (Scanning electron Microscope) image of a vesicular ash particle erupted by Augustine volcano on January 13, 2006. The ash sample was collected during the ashfall in Homer, Alaska by John Paskievitch, AVO.
SEM (Scanning electron Microscope) image of a vesicular ash particle erupted by Augustine volcano on January 13, 2006. The ash sample was collected during the ashfall in Homer, Alaska by John Paskievitch, AVO.
Helicopter overflight photo taken this morning - view toward the west directly above Kapoho Crater. The fissure 8 lava channel now bends sharply to the south on the western edge of the crater after being blocked and diverted yesterday.
Helicopter overflight photo taken this morning - view toward the west directly above Kapoho Crater. The fissure 8 lava channel now bends sharply to the south on the western edge of the crater after being blocked and diverted yesterday.
Map as of 1:00 p.m. HST, July 11, 2018. Given the dynamic nature of Kīlauea's lower East Rift Zone eruption, with changing vent locations, fissures starting and stopping, and varying rates of lava effusion, map details shown here are accurate as of the date/time noted. Shaded purple areas indicate lava flows erupted in 1840, 1955, 1960, and 2014-2015.
Map as of 1:00 p.m. HST, July 11, 2018. Given the dynamic nature of Kīlauea's lower East Rift Zone eruption, with changing vent locations, fissures starting and stopping, and varying rates of lava effusion, map details shown here are accurate as of the date/time noted. Shaded purple areas indicate lava flows erupted in 1840, 1955, 1960, and 2014-2015.
This 88 day eruption spawned lava flows which crossed all major roads to lower Puna. Coastal villages from Kalapana to Kapoho were isolated. Major roads closed by lava included Pahoa-Pohoiki; Pahoa-Kapoho; Pahoa-Opihikao; and Pahoa-Kalapana as well as the lower Puna coastal highway.
This 88 day eruption spawned lava flows which crossed all major roads to lower Puna. Coastal villages from Kalapana to Kapoho were isolated. Major roads closed by lava included Pahoa-Pohoiki; Pahoa-Kapoho; Pahoa-Opihikao; and Pahoa-Kalapana as well as the lower Puna coastal highway.
Crater Lake is the remnant of Mount Mazama, which erupted catastrophically 7,700 years ago to form the caldera.Wizard Island in lake and Mount Scott is peak on right shore. View from south. Oregon
Crater Lake is the remnant of Mount Mazama, which erupted catastrophically 7,700 years ago to form the caldera.Wizard Island in lake and Mount Scott is peak on right shore. View from south. Oregon
Due to the cataclysmic eruption of May 18, 1980, many of the locations annotated on this map are now either covered or no longer visible.
Due to the cataclysmic eruption of May 18, 1980, many of the locations annotated on this map are now either covered or no longer visible.
Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed. The biggest of the Yellowstone eruptions occurred 2.1 million years ago, depositing the Huckleberry Ridge ash bed.
Eruptions of the Yellowstone volcanic system have included the two largest volcanic eruptions in North America in the past few million years; the third largest was at Long Valley in California and produced the Bishop ash bed. The biggest of the Yellowstone eruptions occurred 2.1 million years ago, depositing the Huckleberry Ridge ash bed.
Julie Donnelly-Nolan taking notes while working in the field at Newberry Volcano.
Julie Donnelly-Nolan taking notes while working in the field at Newberry Volcano.
USGS Debris-flow flume near Blue River, Oregon is used to conduct debris flows and landslide experiments. Flume is a reinforced concrete channel 95 m (310 ft long, 2 m (6.6 ft) wide, and 1.2 m (4 ft).
USGS Debris-flow flume near Blue River, Oregon is used to conduct debris flows and landslide experiments. Flume is a reinforced concrete channel 95 m (310 ft long, 2 m (6.6 ft) wide, and 1.2 m (4 ft).
Crater Lake from the air viewed from the southwest. Wizard Island is the conical mound in the lake and Mount Scott is the peak beyond the lake. Oregon
Crater Lake from the air viewed from the southwest. Wizard Island is the conical mound in the lake and Mount Scott is the peak beyond the lake. Oregon
Mount Jefferson, Oregon, aerial view as seen from the west.
Mount Jefferson, Oregon, aerial view as seen from the west.
Mount Jefferson (pointed peak in middle) and Three Sisters (to the right) in Oregon, south-facing aerial view as seen from Mount St. Helens.
Mount Jefferson (pointed peak in middle) and Three Sisters (to the right) in Oregon, south-facing aerial view as seen from Mount St. Helens.
Mount Adams, Washington as seen from Mount St. Helens (west). Trees are covered in frost in the foreground.
Mount Adams, Washington as seen from Mount St. Helens (west). Trees are covered in frost in the foreground.
The station recording this pattern of seismicity was called Yellow Rock (YEL), which was approximately 1 km north of the 2004-2008 vent. YEL was removed in 2007 before the advancing Crater Glacier reached it. The YEL site is now under a hundred or so feet of ice.
The station recording this pattern of seismicity was called Yellow Rock (YEL), which was approximately 1 km north of the 2004-2008 vent. YEL was removed in 2007 before the advancing Crater Glacier reached it. The YEL site is now under a hundred or so feet of ice.
Global Positioning System receiver (dome on pole) and seismometer (box on ground in distance) at a volcano monitoring station for Three Sisters in Central Oregon. Solar panel mounted to pole.
Global Positioning System receiver (dome on pole) and seismometer (box on ground in distance) at a volcano monitoring station for Three Sisters in Central Oregon. Solar panel mounted to pole.
Overlain photographs from a time-lapse camera show the East Lae‘apuki lava delta before and after part of the delta collapsed on August 27, 2005. The collapse occurred piecemeal during a 90-minute period. Loose rocks on the remaining delta were deposited there by large waves generated during the initial collapse.
Overlain photographs from a time-lapse camera show the East Lae‘apuki lava delta before and after part of the delta collapsed on August 27, 2005. The collapse occurred piecemeal during a 90-minute period. Loose rocks on the remaining delta were deposited there by large waves generated during the initial collapse.
Embayment of lava delta shows result of collapse. The initial collapse was large enough to send waves washing over much of the east half of the delta, because visibility was completely lost for almost 20 minutes, due to a steam white-out. Note rocky debris hurled by the waves onto the delta surface in foreground.
Embayment of lava delta shows result of collapse. The initial collapse was large enough to send waves washing over much of the east half of the delta, because visibility was completely lost for almost 20 minutes, due to a steam white-out. Note rocky debris hurled by the waves onto the delta surface in foreground.
Caught by a time-lapse camera, collapse of East Lae‘apuki lava delta in the early morning hours of August 27, 2005, generated waves that swept large lava fragments onto the delta. Daylight revealed boulders as large as 1 m (3 ft) in diameter on the surviving delta surface directly beneath the camera.
Caught by a time-lapse camera, collapse of East Lae‘apuki lava delta in the early morning hours of August 27, 2005, generated waves that swept large lava fragments onto the delta. Daylight revealed boulders as large as 1 m (3 ft) in diameter on the surviving delta surface directly beneath the camera.