Unified Interior Regions

Hawaii

The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

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September 2, 2008

Nightshot movie showing the explosive eruption

Movie, in 'nightshot' mode and zoomed in on the Halema`uma`u vent, shows the explosive eruption which occurred at 8:13 pm. This eruption carpeted the area around the Halema`uma`u crater rim with ejecta as large as 8 inches long.

August 31, 2008

Pulse of ash and flashes of incandescence

Video shows an ash-emission event at 6:53pm on August 31 from the vent in Halema`uma`u crater. The event begins with a robust pulse of ash, followed shortly by flashes of bright incandescence that rise about 50 yards above the vent.

August 27, 2008

Fifth explosive eruption

Movie shows a small explosive eruption, at 7:37 am, from the vent in Halema`uma`u crater. The normal white degassing plume is rapidly overwhelmed by a more robust, ash-rich plume that rises rapidly from the vent. This is the fifth explosive eruption since the new vent at Halema`uma`u appeared in mid-March.

August 20, 2008

Awesome movie! Ash-rich phase

Movie shows an example of an ash-rich phase at Halema`uma`u crater. This event occurred at 3:40pm. These sporadic ash-rich phases are probably due to small rockfalls within the vent.

Nighttime view of tephra-jet explosion, Kīlauea Volcano, Hawai‘i...
July 16, 2008

Nighttime view of tephra-jet explosion, Kīlauea, Hawai‘i

Incandescent arcs trace the path of lava fragments cast out during a tephra-jet explosion at the Waikupanaha ocean entry in 2008. This is a relatively small explosion, reaching a few tens of meters (yards) height, while one earlier in the day was nearly 70 meters (230 ft) in height. At the bottom of the photograph is the rim of the littoral cone built up by explosion

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Image: Littoral Explosion At Kilauea Volcano, Hawai'i
July 16, 2008

Littoral Explosion At Kilauea Volcano, Hawai'i

When lava from the Pu'u 'Ō'ō-Kupaianaha eruption, active since 1983, meets the ocean, large littoral explosions can result.

July 10, 2008

Low dome fountain on TEB rootless shield 3

Movie showing the low dome fountain on TEB rootless shield 3; video of spattering from the vent on the west side of Pu`u `Ō `ō crater taken with thermal camera; and video of the vent on the east wall of Pu`u `Ō `ō crater taken with thermal camera.

Gas plume rising from Halema‘uma‘u Crater, Kīlauea Volcano, Hawai‘i...
June 13, 2008

Gas plume rising from Halema‘uma‘u, Kīlauea, Hawai‘i

Gas plume rising from Halema‘uma‘u Crater, Kīlauea Volcano, Hawai‘i

Volcanic-gas plume rises from Halema‘uma‘u Crater, Kīlauea Volcano,...
June 5, 2008

Volcanic-gas plume rises from Halema‘uma‘u, Kīlauea

Volcanic-gas plume rises from Halema‘uma‘u Crater, Kīlauea Volcano, Hawai‘i

Volcanic-gas plume rises from Halema‘uma‘u Crater, Kīlauea Volcano,...
June 2, 2008

Volcanic-gas plume rises from Halema‘uma‘u, Kīlauea

A plume of volcanic gases (chiefly water vapor, carbon dioxide, and sulfur dioxide), tiny lava and rock particles, and droplets drifts southwest in the tradewinds from Halema‘uma‘u Crater. The 500-5,000 metric tons (1.1-11 million pounds) of sulfur dioxide gas emitted each day react in the atmosphere and, with the other gases and particles, form "vog" (volcanic smog)

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photo of lava
May 16, 2003

Breakouts in Kohola under Full Flower Moon

Eruption cloud, from the east crater of Anatahan Volcano
May 15, 2003

For the past week, a billowing column of dark volcanic ash has been erupting from Anatahan Volcano in the Northern Mariana Islands, burying parts of the volcano with more than 45 cm (18 inches) of ash and sending a dilute eruption cloud more than 1000 km (600 miles) to the west.

photo of lava
May 9, 2003

Tiny hornitos at Son of Cookie Monster

Map with lava inundation zones identified for Mauna Loa
May 8, 2003

The primary goal of the U.S. Geological Survey's Hawaiʻian Volcano Observatory is to provide scientific information that can be used to reduce risks due to volcanic activity. To this end, the Observatory assesses volcanic hazards and educates the public and public officials about those hazards.

USGS
April 24, 2003

April 26, 2003, marks the 30th anniversary of the magnitude M6.2 Honomu earthquake. This earthquake occurred at 10:26 a. m. and was centered north of Hilo, beneath the town of Honomu. The earthquake caused nearly $6 million in damage, to roads and highways, lifelines and utilities, and over 400 homes and businesses.

photo of lava
April 19, 2003

Kohola breakout 880 m north of coconut grove

Lava spattering from the top of a small cone
April 17, 2003

People like to hear about record-holders-the biggest, fastest, best. That's why we're frequently asked, "What's the world's most active volcano? Is it Kilauea?"