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Images related to natural hazards.

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Photo taken at dawn of a fissure erupting between Pu‘u ‘Ō‘ō Crater ...
Fissure erupting between Pu‘u ‘Ō‘ō and Nāpau
Fissure erupting between Pu‘u ‘Ō‘ō and Nāpau
Incandescent rubble rolling and sliding down the scarp on the edge ...
Rubble rolling down the edge of the collapsing crater in Pu‘u ‘Ō‘ō
Rubble rolling down the edge of the collapsing crater in Pu‘u ‘Ō‘ō
Rubble rolling down the edge of the collapsing crater in Pu‘u ‘Ō‘ō

Incandescent rubble rolling and sliding down the scarp on the edge of the collapsing crater in Pu‘u ‘Ō‘ō. A remnant of the pre-collapse crater floor can be seen in the background below the crater's south wall. The east rim of Pu‘u ‘Ō‘ō is in the foreground.

Incandescent rubble rolling and sliding down the scarp on the edge of the collapsing crater in Pu‘u ‘Ō‘ō. A remnant of the pre-collapse crater floor can be seen in the background below the crater's south wall. The east rim of Pu‘u ‘Ō‘ō is in the foreground.

Fissures actively propagating during Kamoamoa eruption, Kīlauea, Ha...
Fissures actively propagating during Kamoamoa eruption
Fissures actively propagating during Kamoamoa eruption
Fissures actively propagating during Kamoamoa eruption

Fissures actively propagating during Kamoamoa eruption, Kīlauea, Hawai‘i. View looking at the NE end of the actively propagating fissure. Lava is just breaking the surface in foreground crack. Lava reached the surface along an actively propagating fissure during Kīlauea Volcano's Kamoamoa eruption on March 5, 2011.

Fissures actively propagating during Kamoamoa eruption, Kīlauea, Hawai‘i. View looking at the NE end of the actively propagating fissure. Lava is just breaking the surface in foreground crack. Lava reached the surface along an actively propagating fissure during Kīlauea Volcano's Kamoamoa eruption on March 5, 2011.

View along fissure looking NE toward Pu‘u ‘Ō‘ō shrouded in clouds i...
View along fissure looking NE toward Pu‘u ‘Ō‘ō shrouded in clouds i...
View along fissure looking NE toward Pu‘u ‘Ō‘ō shrouded in clouds i...
View along fissure looking NE toward Pu‘u ‘Ō‘ō shrouded in clouds i...

View along fissure looking NE toward Pu‘u ‘Ō‘ō shrouded in clouds in the background. Fissure segment in forest has shut down.

Views from the active lava surface in Halema‘uma‘u crater...
Views from the active lava surface in Halema‘uma‘u
Views from the active lava surface in Halema‘uma‘u
Views from the active lava surface in Halema‘uma‘u

Following several collapses and small explosive events that deposited spatter on the floor of Halema‘uma‘u crater around noon today, the lava surface in Halema‘uma‘u was roiling and agitated for the remainder of the afternoon, with numerous points of upwelling and spattering.

Following several collapses and small explosive events that deposited spatter on the floor of Halema‘uma‘u crater around noon today, the lava surface in Halema‘uma‘u was roiling and agitated for the remainder of the afternoon, with numerous points of upwelling and spattering.

New fissure eruption SW of Pu‘u ‘Ō‘ō
New fissure eruption SW of Pu‘u ‘Ō‘ō
New fissure eruption SW of Pu‘u ‘Ō‘ō
New fissure eruption SW of Pu‘u ‘Ō‘ō

New fissure eruption SW of Pu‘u ‘Ō‘ō between Pu‘u ‘Ō‘ō and Nāpau crater. Spatter is reaching 15-20 m into the air, above the trees.

New fissure eruption SW of Pu‘u ‘Ō‘ō between Pu‘u ‘Ō‘ō and Nāpau crater. Spatter is reaching 15-20 m into the air, above the trees.

A sailboat has washed up onto the base of a bridge buttress and there are onlookers on bridge and sidewalk in background gawking
Japan tsunami of 2011 hits Santa Cruz yacht harbor
Japan tsunami of 2011 hits Santa Cruz yacht harbor
Japan tsunami of 2011 hits Santa Cruz yacht harbor

A sailboat gets stuck under the Murray Street bridge over Santa Cruz Harbor in California, after it was washed free of its dock due to the strength of the tsunami wave from Japan. While the tsunami energy that hit the coast of California was relatively low, the wave energy is concentrated in narrow spaces like harbors.

A sailboat gets stuck under the Murray Street bridge over Santa Cruz Harbor in California, after it was washed free of its dock due to the strength of the tsunami wave from Japan. While the tsunami energy that hit the coast of California was relatively low, the wave energy is concentrated in narrow spaces like harbors.

Geologist samples layers formed by explosive eruptions at Kīlauea V...
Geologist samples layers formed by explosive eruptions at Kīlauea, ...
Geologist samples layers formed by explosive eruptions at Kīlauea, ...
Geologist samples layers formed by explosive eruptions at Kīlauea, ...

These tephra deposits are from the Kulanaokuaiki Tephra erupted from Kīlauea Volcano about 200 to 1000 C.E. The base of a lava flow overlying the tephra is just above the person's hand. This site is located near the base of Kīlauea's summit crater wall, directly below the USGS Hawaiian Volcano Observatory and NPS Jaggar Museum.

These tephra deposits are from the Kulanaokuaiki Tephra erupted from Kīlauea Volcano about 200 to 1000 C.E. The base of a lava flow overlying the tephra is just above the person's hand. This site is located near the base of Kīlauea's summit crater wall, directly below the USGS Hawaiian Volcano Observatory and NPS Jaggar Museum.

The Boulder magnetic observatory. Variations and Proton Sensor buildings at the lower right.
Boulder Magnetic Observatory
Boulder Magnetic Observatory
Boulder Magnetic Observatory

The Boulder magnetic observatory. Variations and Proton Sensor buildings at the lower right.

Image: Boulder Geomagnetic Observatory
Boulder Geomagnetic Observatory
Boulder Geomagnetic Observatory
Boulder Geomagnetic Observatory

Azimuth mark, Absolutes building and Coil building at Boulder magnetic observatory.

Azimuth mark, Absolutes building and Coil building at Boulder magnetic observatory.
Boulder Magnetic Observatory
Boulder Magnetic Observatory
Boulder Magnetic Observatory

Azimuth mark, Absolutes building and Coil building at Boulder magnetic observatory.

Aerial view of the 2011 Kamoamoa lava fountains looking northeast t...
the 2011 Kamoamoa lava fountains looking NE toward Pu‘u ‘Ō‘ō
the 2011 Kamoamoa lava fountains looking NE toward Pu‘u ‘Ō‘ō
the 2011 Kamoamoa lava fountains looking NE toward Pu‘u ‘Ō‘ō

Aerial photo showing lava fountains and flows from one of the fissure segments on March 8. A channelized ‘A‘ā flow is hidden by fume to right. Distant fume shows locations of other earlier Kamoamoa fissures active March 5-7. Pu‘u ‘Ō‘ō about 3.6 km (2.2) in distance from the fountains.

Aerial photo showing lava fountains and flows from one of the fissure segments on March 8. A channelized ‘A‘ā flow is hidden by fume to right. Distant fume shows locations of other earlier Kamoamoa fissures active March 5-7. Pu‘u ‘Ō‘ō about 3.6 km (2.2) in distance from the fountains.

Image: Lava Erupts Above the Surrounding Forest
Lava Erupts Above the Surrounding Forest
Lava Erupts Above the Surrounding Forest
Lava Erupts Above the Surrounding Forest

Lava, erupting from the southwestern vent of the Kamoamoa eruption, fountains above the surrounding forest.

Image: Overview of the Kamoamoa Eruption
Overview of the Kamoamoa Eruption
Overview of the Kamoamoa Eruption
Overview of the Kamoamoa Eruption

Overview of the Kamoamoa eruption looking northeast toward Pu'u 'O 'o, in the background. The southwestern vent is in the foreground, while the northeastern vent is the distant fume at the base of Pu'u 'O 'o.

Overview of the Kamoamoa eruption looking northeast toward Pu'u 'O 'o, in the background. The southwestern vent is in the foreground, while the northeastern vent is the distant fume at the base of Pu'u 'O 'o.

Image: Thermal View Into the Halema'uma'u Vent
Thermal View Into the Halema'uma'u Vent
Thermal View Into the Halema'uma'u Vent
Thermal View Into the Halema'uma'u Vent

Views into the Halema'uma'u vent have been largely obscured by fume over the past several days, and the only consistent views have been with a thermal camera, which can "see" through the fume. This thermal image was taken at a nearly vertical angle from a helicopter, in order to see the bottom of the extremely deep and narrow vent cavity.

Views into the Halema'uma'u vent have been largely obscured by fume over the past several days, and the only consistent views have been with a thermal camera, which can "see" through the fume. This thermal image was taken at a nearly vertical angle from a helicopter, in order to see the bottom of the extremely deep and narrow vent cavity.

Image: Lava Fountains from the Northeastern Vent of the Kamoamoa Eruption
Lava Fountains from the Northeastern Vent of the Kamoamoa Eruption
Lava Fountains from the Northeastern Vent of the Kamoamoa Eruption
Lava Fountains from the Northeastern Vent of the Kamoamoa Eruption

Lava fountains from the northeastern vent of the Kamoamoa eruption. Though it is an impressive sight, the Pu'u 'O 'o cone in the background, and several hundred meters higher, puts the current activity into perspective.

Lava fountains from the northeastern vent of the Kamoamoa eruption. Though it is an impressive sight, the Pu'u 'O 'o cone in the background, and several hundred meters higher, puts the current activity into perspective.

Image: Overview of the Kamoamoa Eruption
Overview of the Kamoamoa Eruption
Overview of the Kamoamoa Eruption
Overview of the Kamoamoa Eruption

Overview of the Kamoamoa eruption looking south. The northeastern vent is to the left, and the southwestern vent is to the upper right. A river of lava, erupting from the southwestern vent, can be seen advancing toward the southeast through forest within Hawai'i Volcanoes National Park.

Overview of the Kamoamoa eruption looking south. The northeastern vent is to the left, and the southwestern vent is to the upper right. A river of lava, erupting from the southwestern vent, can be seen advancing toward the southeast through forest within Hawai'i Volcanoes National Park.

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