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Volcano Hazard Program images.

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HVO geologist and helicopter pilot repair a mobile Webcam on Kupaia...
Geologist and helicopter pilot repair a mobile Webcam on Kupaianaha...
Geologist and helicopter pilot repair a mobile Webcam on Kupaianaha...
Geologist and helicopter pilot repair a mobile Webcam on Kupaianaha...

HVO geologist and helicopter pilot repair a mobile Webcam on Kupaianaha to continue monitoring the east flank of Pu‘u ‘Ō‘ō.

Looking west into Pu‘u ‘Ō‘ō Crater and the perched pond...
Looking west into Pu‘u ‘Ō‘ō and the perched pond
Looking west into Pu‘u ‘Ō‘ō and the perched pond
Looking west into Pu‘u ‘Ō‘ō and the perched pond

Looking west into Pu‘u ‘Ō‘ō Crater. Recent flows that have spilled out of the perched pond stand out by their silver color. These overflows have built up the crater floor another 5 m (16 ft) since last week. Kane Nui o Hamo, Mauna Ulu, and Pu‘u Huluhulu are in the background.

Looking west into Pu‘u ‘Ō‘ō Crater. Recent flows that have spilled out of the perched pond stand out by their silver color. These overflows have built up the crater floor another 5 m (16 ft) since last week. Kane Nui o Hamo, Mauna Ulu, and Pu‘u Huluhulu are in the background.

Lava lakes, islands, and bubbles: 100-year-old descriptions still ...
100-year-old descriptions still useful today
100-year-old descriptions still useful today
100-year-old descriptions still useful today

"The great inflated cylinder of black glass which formed over the sunken island, Aug. 18, 1911" (Frank Perret).

Stream channel cross-section measurements—instrument that uses lase...
Stream channel cross-section measurements—instrument that uses lase...
Stream channel cross-section measurements—instrument that uses lase...
Stream channel cross-section measurements—instrument that uses lase...

Stream channel cross-section measurements—instrument that uses laser pulses to survey distance to a reflector operated by a second crew member, Mount St. Helens.

Global Positioning System receiver (called a GPS monument) at North...
Global Positioning System receiver (called a GPS monument) at North...
Global Positioning System receiver (called a GPS monument) at North...
Vents on the west flank of Pu‘u ‘Ō‘ō erupt—once again...
Vents on the west flank of Pu‘u ‘Ō‘ō erupt—once again
Vents on the west flank of Pu‘u ‘Ō‘ō erupt—once again
Vents on the west flank of Pu‘u ‘Ō‘ō erupt—once again

August 3 photo showing the collapsed floor within Pu‘u ‘Ō‘ō Crater in the foreground and two lava flow branches each burning some forest—northwest branch to the right and south branch to the left.

August 3 photo showing the collapsed floor within Pu‘u ‘Ō‘ō Crater in the foreground and two lava flow branches each burning some forest—northwest branch to the right and south branch to the left.

HVO's first report in 1911—all about the Halema‘uma‘u Crater lava l...
HVO's first report in 1911—all about the Halema‘uma‘u lava lake
HVO's first report in 1911—all about the Halema‘uma‘u lava lake
HVO's first report in 1911—all about the Halema‘uma‘u lava lake

Frank Perret's photos from early July 1911 showing the island in the lake at the bottom of a smaller Halema‘uma‘u Crater. The view is looking southwest and the ledge up near the west rim was known as the January 1910 bench, a remnant of an earlier lava level in the crater.

Frank Perret's photos from early July 1911 showing the island in the lake at the bottom of a smaller Halema‘uma‘u Crater. The view is looking southwest and the ledge up near the west rim was known as the January 1910 bench, a remnant of an earlier lava level in the crater.

Gas sampling in Sherman Crater, Mount Baker, Washington. Panoramic ...
Gas sampling in Sherman Crater, Mount Baker, WA. Panoramic photogra...
Gas sampling in Sherman Crater, Mount Baker, WA. Panoramic photogra...
Gas sampling in Sherman Crater, Mount Baker, WA. Panoramic photogra...

Gas sampling in Sherman Crater, Mount Baker, Washington. Panoramic photograph with USGS scientist in center-left of photo beneath fumarole.

USGS CVO staff member assisting a teacher with mineral identificati...
USGS CVO staff member assisting a teacher with mineral identificati...
USGS CVO staff member assisting a teacher with mineral identificati...
USGS CVO staff member assisting a teacher with mineral identificati...

USGS CVO staff member assisting a teacher with mineral identification during July 2011 Mount Rainer Teacher Workshop.

A Scroll down to the photo taken on June 29 to compare the amount o...
A Scroll down to photo taken on June 29 to compare the amount of up...
A Scroll down to photo taken on June 29 to compare the amount of up...
A Scroll down to photo taken on June 29 to compare the amount of up...

A Scroll down to the photo taken on June 29 to compare the amount of uplift the floor of the crater has endured in the last month. This photo was taken from a similar spot to the lower right of the three photos posted that day.

A Scroll down to the photo taken on June 29 to compare the amount of uplift the floor of the crater has endured in the last month. This photo was taken from a similar spot to the lower right of the three photos posted that day.

Newberry caldera with Paulina Peak, Big Obsidian Flow and Paulina L...
Newberry caldera with Paulina Peak, Big Obsidian Flow and Paulina Lake
Newberry caldera with Paulina Peak, Big Obsidian Flow and Paulina Lake
Newberry caldera with Paulina Peak, Big Obsidian Flow and Paulina Lake

View looking south across Newberry caldera towards the Big Obsidian flow (left of center) and Paulina Peak, with Paulina Lake in foreground. Photo taken from the north rim of the caldera.

Perched lava lake rising higher in Pu‘u ‘Ō‘ō crater...
Perched lava lake rising higher in Pu‘u ‘Ō‘ō
Perched lava lake rising higher in Pu‘u ‘Ō‘ō
Perched lava lake rising higher in Pu‘u ‘Ō‘ō

Aerial view looking southwest into Pu‘u ‘Ō‘ō crater with its lava lake (shiny surface) perched 5-8 m above the surrounding lava flows.

Clean up of ash in Argentina following the Puyehue-Cordón Caulle 2...
Ash cleanup following the Puyehue-Cordón Caulle 2011 eruption
Ash cleanup following the Puyehue-Cordón Caulle 2011 eruption
The Founding of the Hawaiian Volcano Observatory...
The Founding of the HVO
The Founding of the HVO
The Founding of the HVO

Frank Perret (left) and Thomas Jaggar (right) examine Cone Crater, Kīlauea southwest rift zone, during a return visit by Perret in 1914.

Frank Perret (left) and Thomas Jaggar (right) examine Cone Crater, Kīlauea southwest rift zone, during a return visit by Perret in 1914.

Spectacular views of Pu‘u ‘Ō‘ō crater and the erupting spatter cone...
Spectacular views of Pu‘u ‘Ō‘ō and the erupting spatter cone
Spectacular views of Pu‘u ‘Ō‘ō and the erupting spatter cone
Spectacular views of Pu‘u ‘Ō‘ō and the erupting spatter cone

Near-vertical view down into the Overlook vent collapse crater. The partly destroyed visitor overlook is at lower right. The gray surface of the lava lake at the bottom of the pit is faintly visible through fume. North is toward the top of the photo.

Near-vertical view down into the Overlook vent collapse crater. The partly destroyed visitor overlook is at lower right. The gray surface of the lava lake at the bottom of the pit is faintly visible through fume. North is toward the top of the photo.

A new ocean entry started overnight, fed by a western branch of the...
A new ocean entry fed by a western branch of the active flow
A new ocean entry fed by a western branch of the active flow
A new ocean entry fed by a western branch of the active flow

A new ocean entry started overnight, fed by a western branch of the active flow. The light gray-colored new flow shows up well in the cloud shadow at left edge of the photo. An eastern branch of the flow continues to advance slowly toward Kalapana Gardens, which is visible at the upper right.

A new ocean entry started overnight, fed by a western branch of the active flow. The light gray-colored new flow shows up well in the cloud shadow at left edge of the photo. An eastern branch of the flow continues to advance slowly toward Kalapana Gardens, which is visible at the upper right.

Composite images showing eastern and western lobes that are active ...
Images showing eastern and western lobes are active on coastal plain
Images showing eastern and western lobes are active on coastal plain
Images showing eastern and western lobes are active on coastal plain

This composite image combines a thermal image with a normal photograph of the coastal plain and pali. The active flow field is split into several lobes, and this image shows the eastern lobe that has been approaching Kalapana Gardens subdivision. Active lava has reached the end of the paved access road, where the County lava viewing area is.

This composite image combines a thermal image with a normal photograph of the coastal plain and pali. The active flow field is split into several lobes, and this image shows the eastern lobe that has been approaching Kalapana Gardens subdivision. Active lava has reached the end of the paved access road, where the County lava viewing area is.

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