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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Mauna Loa: How well do you know the volcano in your backyard?...
January 8, 2014

Mauna Loa: How well do you know the volcano in your backyard?

Erupting vents on Mauna Loa's Northeast Rift Zone near Pu‘u‘Ula‘ula (Red Hill) on Mar. 25, 1984—just hours after the eruption began—sent massive ‘A‘ā lava flows moving toward Hilo at 4 miles per hour. By the time the eruption ended on April 15, lava flows had reached to within four miles of Hilo city limits. USGS photo.

Two talks about Kīlauea Volcano at UH-Hilo...
January 8, 2014

Two talks about Kīlauea at UH-Hilo

During the first few hours of the Kamoamoa fissure eruption in March 2011, lava bubbled to the surface through a ground crack that propagated along Kīlauea Volcano's East Rift Zone. How it and other Hawaiian fissure eruptions work will be the topic of a talk at UH-Hilo on January 16, 2014.

It was remarkably clear during today's overflight of Kīlauea's east...
November 27, 2013

It was remarkably clear during today's overflight of Kīlauea's ERZ....

It was remarkably clear during today's overflight of Kīlauea's east rift zone. This photo is taken from Pu‘u ‘Ō‘ō, and looks northwest. Mauna Kea is at the right, and Mauna Loa is at the left. In front of the summit of Mauna Loa, the degassing plume from the lava lake at Kīlauea's summit is rising vertically.

October 24, 2013

Thermal image sequence of summit lava lake motion

This thermal image sequence shows the typical motion of the lava lake in Halema‘uma‘u Crater. For scale, the lake is about 160 meters (520 feet) wide in this view. The clip spans about 12 minutes, and is shown at 30x speed. The lava upwells along the north margin of the lava lake (in this view, near the top of the image). The crust slowly migrates towards the south, where

Hawaiian Volcano Observatory and Jaggar Museum, Kīlauea Volcano, Ha...
August 27, 2013

HVO and Jaggar Museum, Kīlauea, HI

The Hawaiian Volcano Observatory (HVO) and Jaggar Museum are located at the summit of Kīlauea Volcano, and are visible atop the cliff to the right, on the edge of Kīlauea Caldera. HVO is about 2 km (1.25 miles) north-northwest of the lava lake in Halema‘uma‘u, fuming (but not directly visible) at the left edge of the photo.

Small explosion at Halema`uma`u lava lake (Kīlauea, Hawaii)....
August 23, 2013

Small explosion at Halema`uma`u lava lake (Kīlauea, Hawaii).

At 9:48 PM on Friday, August 23, 2013, a collapse of a piece of the wall above the lava lake in Halema`uma`u triggered a small explosion. The explosion bombarded the rim of Halema`uma`u around the old visitor overlook with molten gobs of spatter as big as dinner plates. Dense lithic fragments from the collapsed wall, and at least as large as a baseball, were also thrown

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Lava enters ocean at Kupapa‘u Point, Kīlauea Volcano, Hawai‘i. Phot...
August 7, 2013

Lava enters ocean at Kupapa‘u Point, Kīlauea, Hawai‘i. Photographed...

Lava enters ocean at Kupapa‘u Point, Kīlauea Volcano, Hawai‘i. Photographed with a telephoto lens, the safest way to view the interaction of lava and seawater on the edge of an active delta.

Mowed grasses interspersed with low shrubs in coastal dunes of the Ki’i Unit, in
July 17, 2013

Mowed grasses in coastal dunes of the Ki’i Unit on Oahu, Hawaii

Mowed grasses interspersed with low shrubs in coastal dunes of the Ki’i Unit in James Campbell National Wildlife Refuge on Oahu, Hawaii

Ephemeral wet meadow surrounded by mowed vegetation in the Punamano Unit
July 16, 2013

Ephemeral wet meadow in the Punamano Unit on Oahu, Hawaii

Ephemeral wet meadow surrounded by mowed vegetation in the Punamano Unit of the James Campbell National Wildlife Refuge on Oahu, Hawaii

lava flow expanding into trees
June 27, 2013

Kahauale‘a 2 flow remains active north of Pu‘u ‘Ō‘ō

The Kahauale‘a 2 flow remains active north of Pu‘u ‘Ō‘ō, and has expanded a very minor amount into the forest, burning trees. The flow, which consists of slowly moving pāhoehoe, has widened but advanced little over the past two weeks.

Lava flow from Kīlauea Volcano (Hawaii) enters forest....
June 27, 2013

Lava flow from Kīlauea (Hawaii) enters forest.

On Kīlauea's East Rift Zone, the Kahauale'a 2 flow advances slowly into the Puna Forest Reserve. The Kahauale`a 2 flow began in early May, 2013, on the north side of the rift.

Color photograph showing person and instrument measuring volcanic gas
June 6, 2013

SO2 camera being tested by HVO scientist

Camera captures SO2 released from Kīlauea's summit vent. HVO scientist tests the network link between the instrument and the Hawaiian Volcano Observatory.

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USGS
February 19, 2004

In 2003, the seismic data analysts at the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) examined and archived 10,591 earthquakes on the island of Hawai'i. Of these, 2,079 were magnitude 1.5 or greater.

This is a photo of East Pond Vent and January Vent.
February 15, 2004

Incandescence at Pu`u `O`o on a Sunday morning

USGS
February 12, 2004

Last week, the judging phase of the Hawai`i District Science Fair was completed and the awards given to deserving young scientists. The staff at the Hawaiian Volcano Observatory decided to honor two long-time local staff members and made personal donations to fund four awards for the fair.

USGS
February 5, 2004

Any institution, whether commercial, academic, or governmental, requires novel ideas to thrive. Fresh ideas come from training, sudden insights (the proverbial light bulb is turned on), hard work, and young talented staff members who bring in innovative concepts and abundant energy.

USGS
January 29, 2004

As reported in the previous Volcano Watch, a new vent opened on the south flank of Pu`u `O`o two weeks ago, on Sunday, January 18. The behavior of the volcano during the previous few months mimicked the behavior that preceded the Mother's Day breakout on May 12, 2002.

USGS
January 22, 2004

If Pu`u `O`o were human, it would make a great baseball pitcher. It throws blazing fastballs, slow change-ups, and sharp curveballs that leave the volcanologist batter fanning at the breeze. But all pitchers have bad days, and Pu`u `O`o had one on January 18, when it tossed a hanging curve that fooled nobody. Here's the story.

This is a photo of a glow from lava and new vent south of cone.
January 18, 2004

New vent at southeast base of Pu`u `O`o.