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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June 2, 2011

Halema`uma`u Lava Lake Spattering

Quicktime movie showing spattering at the south edge of the lava lake in the vent at Halema‘uma‘u.

June 2, 2011

Lava Lake Spattering

Quicktime movie showing a close-up of spattering at the south edge of the lava lake in the vent at Halema‘uma‘u.

June 2, 2011

Overflight of Halema`uma`u Crater

This Quicktime movie shows a quick video of the lava lake in Halema‘uma‘u crater taken during today's overflight. The lava surface has recently been very shallow, as little as 90 meters (98 yards) below the floor of Halema‘uma‘u crater. When the video was taken, the lava was at a high stand during part of a rise and fall cycle, when very little gas is emitted and views are

June 2, 2011

Plume Over Halema`uma`u Crater

Movie showing ashy plume rising above Kīlauea's summit vent in Halema‘uma‘u crater. The plume was the result of the collapse of a portion of the vent wall moments earlier.

June 2, 2011

Halema`uma`u Lava Lake

Movie of the lava lake in Kīlauea's summit vent in Halema‘uma‘u crater minutes after a slice of the vent wall had plunged into the lava. The lava lake is roiling violently as the recently added wall debris is digested by the lava. Slabs of rock can be seen breaking loose from the base of the overhanging vent wall and falling into the lava. The length of time it takes the

May 26, 2011

Time-lapse Sequence from Pu‘u ‘Ō‘ō Crater

This Quicktime movie shows a timelapse sequence taken from a thermal camera on the rim of Pu‘u ‘Ō‘ō crater. The movie spans from May 26 to today and shows the rising level of the lava lake in the crater. In the first part of the movie, covering most of June, the level of the lava lake rises primarily due to overflows building the steep levee walls higher. In the last

May 25, 2011

Refilling of Pu`u `Ō`ō Crater

This Quicktime movie shows the refilling of Pu‘u ‘Ō‘ō over the past two months, taken from a thermal camera on the south rim of the crater. Lavadrained from Pu‘u ‘Ō‘ō on March 5 during the Kamoamoa fissure eruption, and remained absent for several weeks. This thermal camera began recording on March 18, and shows the abrupt return of lava to the crater floor on March 26.

Spectacular views of the summit caldera of Mauna Loa...
May 23, 2011

Spectacular views of the summit caldera of Mauna Loa

A view of Moku‘āweoweo, the summit caldera of Mauna Loa, as seen from South Pit (looking to the north-northwest). An eruption in 1940 created the cinder-and-spatter cone visible on the caldera floor (right center). This cone, which is about 114 m (373 feet) high, is the largest cone at Mauna Loa's summit. The cone on the southwest rim of the caldera (left center) was built

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This aerial view of Mauna Loa's summit shows the cinder-cone and la...
May 23, 2011

This Mauna Loa's summit shows the cinder-cone and lava flows that w...

This aerial view of Mauna Loa's summit shows the cinder-cone and lava flows that were erupted in 1949. The crack extending down the left side of the cone is the northeast-southwest trending 1984 fissure that bisected the southwest flank of the cone during the initial phase of the eruption. Light-brown tephra erupted from the 1949 cone thins to the west. The steep caldera

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An aerial view of the 1940 cinder-and-spatter cone on the floor of ...
May 23, 2011

An the 1940 cinder-and-spatter cone on the floor of Mauna Loa's sum...

An aerial view of the 1940 cinder-and-spatter cone on the floor of Mauna Loa's summit caldera as seen from the southeast. The west wall of the caldera (background) is about 170 m (560 feet) high. Most of the caldera floor around the cone is covered by lava flows erupted in 1984.

Spectacular views of Mauna Loa's Southwest and Northeast Rift Zones...
May 23, 2011

Spectacular views of Mauna Loa's Southwest and NorthERZs

View looking up Mauna Loa's spectacular Southwest Rift Zone. Pu‘u o Keokeo fills the lower half of the photo. The black lava beyond is mostly from 1916 and 1926. The summit of Mauna Loa is in the background.

View from just below the summit of Mauna Loa looking back down the ...
May 23, 2011

View from just below the summit of Mauna Loa looking back down the ...

View from just below the summit of Mauna Loa looking back down the Southwest Rift. The Sulfur Cone is the white area just above center frame. Pu‘u o Keokeo is the barely visible bump just above Sulfur Cone at the crest of the Southwest Rift.

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Eruption cloud, Anatahan Volcano
June 26, 2003

The eruption of Anatahan Volcano in the Commonwealth of the Northern Mariana Islands (CNMI) continues. It has generated much interest in the volcanologic community and among the residents of Saipan and Guam. It has, unfortunately, also generated exaggerated accounts on the Internet.

Closeup of Lake Waiau. The white particles hugging the edges are remains of ice
June 19, 2003

Lake Waiau, at an altitude of 3,969 m (13,020 ft) atop Mauna Kea, is the only alpine lake in the Hawaiian island chain. It is thought to have formed at the end of the last glacial retreat, which in Hawai`i was almost complete by 15,000 years ago.

photo of lave
June 14, 2003

Gushing breakout below Full Strawberry Moon

USGS
June 12, 2003

For the past couple of weeks, Kīlauea had presented us with a flurry of tiny earthquakes located at a shallow depth beneath the volcano's summit. The exact cause of this cataract of miniscule events is unknown, but one possibility that comes to mind is expanding gas bubbles trying to escape from the summit magma reservoir.

photo of lava
June 11, 2003

Scenes at Highcastle on a beautiful morning

photo of lava
June 7, 2003

Cascades over old sea cliff at Highcastle

USGS
June 5, 2003

This week is the 91st anniversary of the largest eruption on earth since Krakatau exploded in 1883. We are also ending the 4th week of an ongoing eruption whose final size and violence are not yet known but which so far has been small. Each eruption took place along the margin of the Pacific plate, in the middle of which Hawai`i has formed.

photo of lava
June 4, 2003

Highcastle lava delta and breakouts inland