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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May 23, 2008

New gas jet at Pu`u `O`o Crater

Closeup of the new vent from a hovering helicopter showing hazy views of incandescence deep inside the vent.

HVO and Jaggar Museum on Kīlauea Volcano's caldera rim, Hawai‘i...
May 23, 2008

HVO and Jaggar Museum on Kīlauea's caldera rim, Hawai‘i

Close view of the USGS Hawaiian Volcano Observatory (right, with viewing tower) and National Park Service Jaggar Museum and overlook (left) on Kīlauea Volcano's caldera rim. At least three fault blocks can be seen below the observatory, which developed when Kīlauea's summit collapsed about 500 years ago to form the present-day caldera.

Volcanic-gas plume from Halema‘uma‘u Crater drifts southwest, Kīlau...
May 21, 2008

Volcanic-gas plume from Halema‘uma‘u drifts SW, Kīlauea

Volcanic-gas plume rises from Halema‘uma‘u Crater as seen from the Jaggar Museum (Hawai‘i Volcanoes National Park) viewing area next to the U.S. Geological Survey's Hawaiian Volcano Observatory.

Volcanic-gas plume rising from summit of Kīlauea Volcano as seen fr...
May 16, 2008

Volcanic-gas plume rising from Kīlauea as seen from Highway 12

Volcanic-gas plume rising from summit of Kīlauea Volcano as seen from Highway 11, Hawai‘i

Volcanic gas plume rises from Halema‘uma‘u Crater, Kīlauea Volcano,...
May 16, 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,...
May 16, 2008

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

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

Pre-moonrise, time-lapse view of Halema‘uma‘u Crater from the Hawai...
April 27, 2008

Pre-moonrise, time-lapse view of Halema‘uma‘u from the HVO, Kīlauea...

Strong tradewinds blow the gas plume from the Overlook vent in Halema‘uma‘u Crater to the southwest. Photograph taken at 4:37 a.m. HST.

HVO geologist collects ash downwind of Halema‘uma‘u Crater, Kīlauea...
April 16, 2008

Geologist collects ash downwind of Halema‘uma‘u, Kīlauea

Ash and other lava fragments erupted from the new vent in HALE‘Ama‘uMAU Crater were collected almost daily from several wooden "tear catchers" located near the crater rim and from many more plastic buckets nearby. Six years later, ash collections are still made several times a week.

Image: Halema'uma'u Crater, Kilauea Volcano Summit Eruption 2008
April 16, 2008

Halema'uma'u Crater, Kilauea Volcano Summit Eruption 2008

Kīlauea Volcano's summit vent within Halema‘uma‘u Crater was about 115 feet in diameter in April 2008, a month after it opened. 

Trade winds blow gas plume from Halema‘uma‘u to the southwest, Kīla...
April 9, 2008

Trade winds blow gas plume from Halema‘uma‘u to SW, Kīlauea

Gas plume rising from the new Overlook Vent in Halema‘uma‘u Crater, Kīlauea Volcano, Hawai‘i. Trade winds blow the plume to the southwest.

Volcanic-gas plume rises from Halema‘uma‘u Crater, Kīlauea Volcano,...
April 7, 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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April 6, 2008

Littoral explosions at Waikupanaha entry

Movie of the littoral explosions at Waikupanaha

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boat overturned by a  tsunami , Wailoa River small-boat harbor in Hilo, Hawai`i.
March 27, 2003

About this time every year, we have an article or two on the topic of tsunami. The month of April is observed as "Tsunami Awareness Month" in Hawai`i. It is important that everyone living in Hawai`i learn about tsunami because more people have been killed by tsunami than by any other natural hazard in Hawai`i.

Map shows lava flows erupted during 1983-March 21, 2003
March 21, 2003

Map of flows from Pu`u `O`o: 21 March 2003

Close up view of the eruption column of Mount St. Helens
March 20, 2003

Residents of the Big Island have been living with the nearly continuous eruption of Kīlauea for a bit over 20 years. They have become familiar with its eruptive style-quiet eruptions of lava that cover large areas with black lava flows, often miles away from the source vent--sometimes even reaching the ocean.