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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UHH is part of the HVO team monitoring Kīlauea eruptions...
April 3, 2014

UHH is part of the HVO team monitoring Kīlauea eruptions

Scanning Electron Microscope images, collected at UH Hilo, showing a fragment of lava collected from the Pu‘u ‘Ō‘ō lava pond in November 2013. The bar scale at the right is 300 microns (0.012 in). The mostly uniform light gray is basalt glass and darker gray crystals are olivine (left) and pyroxene (right). Both crystals contain melt inclusions comprised of light gray

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Mar 7, 2014: A close-up of the lava pond in Pu‘u ‘Ō‘ō crater, with ...
March 7, 2014

Mar 7, 2014: lava pond in Pu‘u ‘Ō‘ō, with snow-covered Mauna Kea in...

Mar 7, 2014: A close-up of the lava pond in Pu‘u ‘Ō‘ō crater, with snow-covered Mauna Kea in the distance.

March 7, 2014

Lava Pond at Pu`u `Ō`ō Crater

Mar 7, 2014: This Quicktime movie shows the lava pond in Pu‘u ‘Ō‘ō crater, which was undergoing "gas

March 7, 2014

Lava Lake in Halema`uma`u Crater

Mar 7, 2014: This Quicktime movie shows Kīlauea's summit lava lake in Halema‘uma‘u Crater. A persistent spatter source is active on the lake margin.

Complex illustration looking at an extinct volcanic island, the ocean water around it, and how water moves through the ground.
March 1, 2014

Schematic geologic cross section of Southern Oʻahu

Schematic geologic cross section of Southern Oʻahu showing groundwater–seawater interaction in the vicinity of Honolulu, HI (modified from Frans et al., 2012).

February 9, 2014

Time-Lapse at Pu`u `Ō`ō Spatter Cone

This Quicktime movie shows a time-lapse sequence of activity at the northeast spatter cone in Pu‘u ‘Ō‘ō crater on February 9-10. Rapid fluctuations in the height of the lava pond are caused by gas pistoning, which is the gradual buildup and release of gas in the pond. Mauna Kea is visible in the upper right portion of the frame. The sequence was captured by an inexpensive

Satellite image shows Kīlauea's activity from summit to east rift z...
February 3, 2014

Satellite image shows Kīlauea's activity from summit to ERZ

This image was acquired by the Earth Observing 1 satellite's Advanced Land Imager sensor on February 2, and shows Kīlauea's summit and east rift zone. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see. Active lava is shown by the bright red pixels, present at the summit - in the lava lake at Halema‘uma‘u

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February 3, 2014

Time-lapse sequence of Halema‘uma‘u degassing plume

This Quicktime movie is a time-lapse sequence from a camera in the HVO observation tower, and shows one week of activity at Kīlauea's summit vent in Halema‘uma‘u Crater. The sequence starts on February 3 at 12:01 am and ends on February 9 at 11:59 pm. The continuously active lava lake produces a degassing plume that is normally carried by the tradewinds to the southwest (

February 1, 2014

Summit Lava Lake Activity

This Quicktime movie shows typical activity at the summit lava lake. Spattering at the summit lava lake has been common over the past several years, and today's winds provided a clear view of the primary spatter area on the lake margin. The lava lake today was about 50 m (160 ft) below the floor of Halema‘uma‘u Crater. The spattering is driven by bursting gas bubbles, with

Preview image for video: Winter storm deposits snow on Mauna Loa's ...
January 29, 2014

Preview image: Winter storm deposits snow on Mauna Loa's summit

Preview image for video: This Quicktime video shows a time-lapse sequence spanning from dawn to dusk on Tuesday, January 28, using images collected by our webcam near the summit of Mauna Loa Volcano (13,680 ft above sea level). The dawn is sunny with clear views across the summit caldera (Moku‘āweoweo), but this clear weather soon deteriorates into thick clouds and steady

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Preview image for video: Winter storm deposits snow on Mauna Loa's ...
January 29, 2014

Preview image: Winter storm deposits snow on Mauna Loa's summit

Preview image for video: This Quicktime video shows a time-lapse sequence spanning from dawn to dusk on Tuesday, January 28, using images collected by our webcam near the summit of Mauna Loa Volcano (13,680 ft above sea level). The dawn is sunny with clear views across the summit caldera (Moku‘āweoweo), but this clear weather soon deteriorates into thick clouds and steady

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January 28, 2014

Winter storm deposits snow on Mauna Loa's summit

This Quicktime video shows a time-lapse sequence spanning from dawn to dusk on Tuesday, January 28, using images collected by our webcam near the summit of Mauna Loa Volcano (13,680 ft above sea level). The dawn is sunny with clear views across the summit caldera (Moku‘āweoweo), but this clear weather soon deteriorates into thick clouds and steady snowfall as a winter

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USGS
May 22, 2003

Throughout the early morning of August 27th, 1883 and into the late afternoon, the inhabitants of Rodriguez Island—a small speck of land in the southwest Indian Ocean—heard the sound of heavy guns firing in the distance.

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.

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.