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 7, 2015

Spattering in Halema`uma`u Crater

This Quicktime movie shows spattering at the margin of the summit lava lake in Halema‘uma‘u Crater. Spattering has been common at the lake, and when it occurs is easily visible from the public viewing area at Jaggar Museum. This video shows a closer view from the rim of Halema‘uma‘u, which is closed to the public due to volcanic hazards.

May 3, 2015

Small Explosive Event at Halema`uma`u Crater

This Quicktime movie shows a small explosive event that occurred at 1:20pm today at the summit lava lake. A collapse of a portion of the Halema‘uma‘u Crater wall impacted the lake and triggered an explosion of spatter. Fist-size clasts were found scattered along the rim of Halema‘uma‘u Crater near the closed visitor overlook.

Kīlauea Volcano's summit lava lake, which was about 12 m (40 ft) be...
April 29, 2015

Kīlauea's summit lava lake, which was about 12 m (40 ft) below the ...

Kīlauea Volcano's summit lava lake, which was about 12 m (40 ft) below the vent rim on April 25 (left), overflowed the vent rim for the first time at about 9:40 p.m., HST, on April 28. As of noon on April 29 (right), the lava lake had overflowed the vent rim several more times. These Webcam images capture the summit vent before and after the overflows.

A small explosion from Kīlauea's summit lava lake in April 2015 was...
April 28, 2015

A small explosion from Kīlauea's summit lava lake in Apr. 2015 was ...

Rocks from the crater wall fell into the summit lava lake and generated an explosion that threw large fragments of molten lava onto the rim of Halema‘uma‘u Crater, 85 m (280 ft) above the lake. Gas in the lava lake was rapidly released during the 10:20 am explosive event, causing the lava lake surface to drop a few meters (yards) after the explosion.

April 28, 2015

Rockfall and Explosion at Halema`uma`u Crater

Quicktime movie of the rockfall and subsequent explosion at 10:20 a.m., HST, on April 28, 2015. Rocks falling into the summit lava lake generated an explosion that threw large fragments of molten lava onto the rim of Halema‘uma‘u Crater, 85 m (280 ft) above the lake. These fragments pose a significant hazard, and are one reason this area remains closed.

April 24, 2015

Overlook Crater Lava Lake

The lava lake in the Overlook Crater, within Halema‘uma‘u Crater at the summit of Kīlauea Volcano, has been rising over the past few days. Today the lava was as high as 14 meters (46 feet) below the Overlook crater rim. Several areas of spattering were active along the lake margin.

March 31, 2015

Exploring Causes of Coral Disease

The Hawaiian Islands’ beautiful ocean and beaches attract more than 8.5 million tourists each year. The USGS aims to help Hawaii preserve its underwater natural resources by tracing how oceanography may influence coral disease outbreaks. Looking into contaminants in the freshwater, or how quickly a bay may or may not flush, will help enrich future and past studies about

Mauna Loa: Quiet for many years, but not to be forgotten...
March 20, 2015

Mauna Loa: Quiet for many years, but not to be forgotten

‘A‘ā lava flows erupt from the Northeast Rift Zone of Mauna Loa on March 25, 1984—the first day of the volcano's most recent eruption. USGS photo.

Underwater, a man wearing a t-shirt, board shorts, mask, snorkel, fins, and gloves secures an instrument to a coral reef.
March 18, 2015

Free dive on coral reef off Kauai

USGS research geologist Curt Storlazzi free dives in order to set an instrument on the reef off Kauaʻi, Hawaiʻi in March 2015.

Geologist collecting a fresh sample of a slow-moving lava flow at K...
March 17, 2015

Geologist collects a sample of slow-moving lava flow, Kīlauea

HVO geologists get fresh lava samples as close to the vent as possible. Once the sample is scooped from the pāhoehoe lobe, it is quickly quenched in a bucket of water to stop the growth of any crystals and to preserve the composition of the liquid lava. Once cooled, the sample is sent first to UH Hilo for quick analysis of a few components and prepared for a fuller

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Kīlauea Volcano's summit eruption in Halema‘uma‘u Crater turns seve...
March 13, 2015

Kīlauea's summit eruption in Halema‘uma‘u turns seven

The lava lake within Halema‘uma‘u Crater at the summit of Kīlauea on February 1, 2014.

Satellite image of area around front of Kīlauea's East Rift Zone la...
March 6, 2015

Satellite image around front of Kīlauea's ERZ lava flow

This satellite image was captured on Tuesday, March 3, 2015 by the Landsat 8 satellite. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see. Bright red pixels depict areas of very high temperatures and show active lava. White areas are clouds. The yellow outline is the flow margin as mapped on Friday,

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USGS
June 17, 2004

Many readers have visited the overlook in front of the Jaggar Museum, next door to HVO, and those of you who haven't should do so some time. A grand vista of Kīlauea's caldera awaits you, and many other sightseers as well. The hustle-bustle is commonly a little distracting.

This is a photo of lava falling into water off point of western delta.
June 14, 2004

Flag Day at western entry of Banana flow

This is a photo of the largest entry in western cluster of entries in Banana flow.
June 11, 2004

Four views of western ocean entry in Banana flow; in and near Pu`u `O`o

USGS
June 10, 2004

Lava flowing from Kīlauea's ongoing eruption finally made its way to the ocean once again a couple of weeks ago. And for the first time in nearly a year, everyone—;from curious park visitors and staff, to intent photographers, to nerdy (and intent) volcanologists—have been treated to the enrapturing experience of seeing liquid rock encounter liquid ocean.

This is a photo of a small entry off new western delta and sharp tumulus built on the delta.
June 9, 2004

Western entry with onshore wind; waning entries at midday

This is a photo of a predawn view of northeast end of new Banana lava delta.
June 8, 2004

Eastern and western entry clusters in Banana flow

This is a photo of new Banana lava delta.
June 6, 2004

Nice way to spend Sunday morning: on land and in a boat