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Volcano Hazard Program images.

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A volcano that just keeps rolling along: Hawaiian Volcano Observato...
A volcano that just keeps rolling along: HVO tracks eruption's phases
A volcano that just keeps rolling along: HVO tracks eruption's phases
Map of Yellowstone earthquakes as located by the University of Utah...
Map of Yellowstone earthquakes as located by the Univ. of Utah Seis...
Map of Yellowstone earthquakes as located by the Univ. of Utah Seis...
Map of Yellowstone earthquakes as located by the Univ. of Utah Seis...

Red circles represent all seismicity and blue circles represent earthquakes as part of earthquake swarms. The size of the circles is scaled to the magnitude of the earthquake. The 630,000 year old Yellowstone caldera is shown as a bold black line within Yellowstone National Park. Mapped faults are shown as light gray lines.

Red circles represent all seismicity and blue circles represent earthquakes as part of earthquake swarms. The size of the circles is scaled to the magnitude of the earthquake. The 630,000 year old Yellowstone caldera is shown as a bold black line within Yellowstone National Park. Mapped faults are shown as light gray lines.

"Dimples" in the Pele's hair that has accumulated on the rim of Hal...
"Dimples" in the Pele's hair that has accumulated on the rim of Hal...
"Dimples" in the Pele's hair that has accumulated on the rim of Hal...
"Dimples" in the Pele's hair that has accumulated on the rim of Hal...

"Dimples" in the Pele's hair that has accumulated on the rim of Halema‘uma‘u are evidence of ballistic impacts during today's rockfall-triggered explosion in Kīlauea Volcano's summit lava lake. Spatter (fragments of molten lava) blasted from the lava lake landed all around HVO's thermal camera (HTcam) that monitors lake activity.

"Dimples" in the Pele's hair that has accumulated on the rim of Halema‘uma‘u are evidence of ballistic impacts during today's rockfall-triggered explosion in Kīlauea Volcano's summit lava lake. Spatter (fragments of molten lava) blasted from the lava lake landed all around HVO's thermal camera (HTcam) that monitors lake activity.

Rockfalls trigger explosions in Kīlauea Volcano's summit lava lake...
Rockfalls trigger explosions in Kīlauea's summit lava lake
Rockfalls trigger explosions in Kīlauea's summit lava lake
Rockfalls trigger explosions in Kīlauea's summit lava lake

This video shows a rockfall and subsequent explosion that occurred at 7:03 a.m. HST today within the "Overlook crater" at the summit of Kīlauea. This collapse was followed by a smaller rockfall at 7:07 a.m. (not shown in video).

This video shows a rockfall and subsequent explosion that occurred at 7:03 a.m. HST today within the "Overlook crater" at the summit of Kīlauea. This collapse was followed by a smaller rockfall at 7:07 a.m. (not shown in video).

Spatter up to about 30 cm (11.8 in) in size was hurled onto the rim...
Spatter up to about 30 cm (11.8 in) in size was hurled onto rim of ...
Spatter up to about 30 cm (11.8 in) in size was hurled onto rim of ...
Spatter up to about 30 cm (11.8 in) in size was hurled onto rim of ...

Spatter up to about 30 cm (11.8 in) in size was hurled onto the rim of Halema‘uma‘u during today's explosive events. Some fragments were thrown or blown farther downwind, reaching as far as the closed section of Crater Rim Drive in Hawai‘i Volcanoes National Park.

Spatter up to about 30 cm (11.8 in) in size was hurled onto the rim of Halema‘uma‘u during today's explosive events. Some fragments were thrown or blown farther downwind, reaching as far as the closed section of Crater Rim Drive in Hawai‘i Volcanoes National Park.

Keeping informed about Hawaiian volcanoes is the first step to prep...
Keeping informed about Hawaii volcanoes is first step to preparedness
Keeping informed about Hawaii volcanoes is first step to preparedness
Keeping informed about Hawaii volcanoes is first step to preparedness

Spectacular aerial view of Kīlauea Volcano's East Rift Zone lava flows advancing over Pūlama pali in December 2017. As surface lava flows moved through the center kipuka (forested area) on the pali, smoke rose from the burning vegetation.

Spectacular aerial view of Kīlauea Volcano's East Rift Zone lava flows advancing over Pūlama pali in December 2017. As surface lava flows moved through the center kipuka (forested area) on the pali, smoke rose from the burning vegetation.

Doublet Pool, fringed by geyserite, in the Upper Geyser Basin of Ye...
Doublet Pool, fringed by geyserite, in the Upper Geyser Basin of YNP.
Doublet Pool, fringed by geyserite, in the Upper Geyser Basin of YNP.
Doublet Pool, fringed by geyserite, in the Upper Geyser Basin of YNP.

Doublet Pool, fringed by geyserite, in the Upper Geyser Basin of Yellowstone National Park. National Park Service photograph by Jacob Frank.

What makes the lava lake within Halema‘uma‘u rise and fall?...
What makes the lava lake within Halema‘uma‘u rise and fall?
What makes the lava lake within Halema‘uma‘u rise and fall?
What makes the lava lake within Halema‘uma‘u rise and fall?

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.

The Hawaiian Volcano Observatory looks forward to 2018...
The HVO looks forward to 2019
The HVO looks forward to 2019
The HVO looks forward to 2019

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.

Dr. Jacob Lowenstern, Scientist-in-Charge of the Yellowstone Volcano Observatory during 2002-2017.
Dr. Jacob Lowenstern leading a field trip Yellowstone National Park
Dr. Jacob Lowenstern leading a field trip Yellowstone National Park
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. 

GeoGirls 2017 science field camp at Mount St. Helens....
GeoGirls 2017 science field camp at Mount St. Helens.
GeoGirls 2017 science field camp at Mount St. Helens.
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 Jefferson, Oregon simplified hazards map
Mount Jefferson, OR simplified hazards map
Mount Jefferson, OR simplified hazards map
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.

Deformation near South Sister from GPS data, 2001-2017
Deformation near South Sister from GPS data, 2001-2017
Deformation near South Sister from GPS data, 2001-2017
Deformation near South Sister from GPS data, 2001-2017

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

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