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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Large-scale map of Kīlauea's East Rift Zone lava flow...
February 5, 2015

This large-scale map shows the distal part of Kīlauea’s active East Rift Zone lava flow in relation to nearby Puna communities.

Satellite image of area around front of Kīlauea's East Rift Zone la...
February 5, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow.

Small-scale map of Kīlauea's East Rift Zone lava flow...
January 30, 2015

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to lower Puna. 

Large-scale map of Kīlauea's East Rift Zone lava flow...
January 30, 2015

This large-scale map shows the distal part of Kīlauea’s active East Rift Zone lava flow in relation to nearby Puna communities.

Small-scale map of Kīlauea's East Rift Zone lava flow...
January 29, 2015

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to lower Puna. 

Large-scale map of Kīlauea's East Rift Zone lava flow...
January 29, 2015

This large-scale map shows the distal part of Kīlauea’s active East Rift Zone lava flow in relation to nearby Puna communities.

Satellite image of area around front of Kīlauea's East Rift Zone la...
January 29, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow. 

Satellite image of area around front of Kīlauea's East Rift Zone la...
January 26, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow.

Small-scale map of Kīlauea's East Rift Zone lava flow...
January 22, 2015

This small-scale map shows Kīlauea’s active East Rift Zone lava flow in relation to lower Puna. 

Large-scale map of Kīlauea's East Rift Zone lava flow...
January 22, 2015

This large-scale map shows the distal part of Kīlauea’s active East Rift Zone lava flow in relation to nearby Puna communities. 

Thermal overlay of distal part of flow field...
January 22, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of the distal part of Kīlauea’s active East Rift Zone lava flow on January 22 at about 9:15 AM. 

Satellite image of area around front of Kīlauea's East Rift Zone la...
January 22, 2015

This large-scale map uses a satellite image acquired in March 2014 (provided by Digital Globe) as a base to show the area around the front of Kīlauea’s active East Rift Zone lava flow.

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'I'iwi (Drepanis coccinea).
April 15, 2019

'I'iwi (Drepanis coccinea), or scarlet honeycreeper.

'I'iwi (Drepanis coccinea), or scarlet honeycreeper.

HVO scientists measure a GPS instrument
April 12, 2019

HVO scientists measure a GPS instrument

HVO scientists measure a GPS instrument to ensure its stability during a multi-day deployment in the Kahuku Unit of Hawai‘i Volcanoes National Park. In recent weeks, HVO has been working to complete a GPS campaign on Mauna Loa, which involves temporary deployments of high-precision GPS receivers to collect data that will help refine models of the volcano's inflation.

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HVO scientists inspect a seismic station on Mauna Loa
April 12, 2019

HVO scientists inspect a seismic station on Mauna Loa

HVO scientists inspect a seismic station on Mauna Loa to evaluate for a possible equipment upgrade in the near future.

high-precision GPS unit
April 11, 2019

high-precision GPS unit

A high-precision GPS unit (on white "T" in foreground) records its position at a ground control point along Pohoiki Road. This marker was painted in July 2018 and is visible in numerous aerial photographs taken by USGS Hawaiian Volcano Observatory geologists throughout Kīlauea's lower East Rift Zone eruption last summer. GPS data are recorded over a period of four minutes

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April 8, 2019

Overflight of Kīlauea Caldera

This wide-angle video shows the southwest portion of Kīlauea caldera in the area of Halema‘uma‘u. Faint plumes of volcanic gas are rising from yellow fumaroles on the walls of the deep conical pit. Overall, no significant changes were observed at the summit on today's overflight.

April 8, 2019

Routine overflight of Kīlauea summit

This wide-angle video shows the southwest portion of Kīlauea caldera in the area of Halema‘uma‘u. Faint plumes of volcanic gas are rising from yellow fumaroles on the walls of the deep conical pit. Overall, no significant changes were observed at the summit on today's overflight.

Coqui frog sitting on a red Ti plant leaf
April 1, 2019

Coqui frog on a red ti leaf

A coqui frog sits on a red ti leaf, next to a quarter for scale. Native to Puerto Rico, coqui frogs are an invasive species in Hawaii.

Coqui frog on red ti plant leaf
April 1, 2019

Coqui frog on a red ti plant leaf

A coqui frog rests on a red ti plant leaf. Native to Puerto Rico, coqui are an invasive species in Hawaii.

GPS station on Mauna Loa
March 27, 2019

GPS survey is completed annually on Mauna Loa

A high-precision Global Positioning System (GPS) survey is completed annually on Mauna Loa. This station was occupied for a period of three days to supplement the continuously operating GPS stations on the volcano. A beautiful view of Mauna Kea (in distance) could seen from this site during the GPS survey. 

 small amounts of sulfur dioxide
March 22, 2019

small amounts of sulfur dioxide

Only small amounts of sulfur dioxide (SO2) and hydrogen sulfide (H2S) are currently being released from Kīlauea, but they chemically react with each other (oxidation-reduction reaction) to form the bright yellow sulfur deposits visible on the crater walls within Halema‘uma‘u. The current low sulfur emission rates at Kīlauea have contributed to

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March 19, 2019

3D Model of Pu`u `Ō`ō

This 3D model of the Pu‘u ‘Ō‘ō crater was constructed from thermal images taken during a recent helicopter overflight. White areas show warm spots in the crater. Despite the absence of active lava in Pu‘u ‘Ō‘ō, changes at the crater have continued since magma drained from beneath it on April 30, 2018. The shape of the crater continues to change through occasional small

March 18, 2019

Rockfalls continue to change the shape of Pu‘u ‘Ō‘ō crater

This video was taken during an overflight of the Pu‘u ‘Ō‘ō crater on Kīlauea Volcano's middle East Rift Zone. No major changes were observed, but the shape of the crater continues to be altered by continued rockfalls.

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Continued overflows from the summit lava lake throughout the day...
April 25, 2018

Continued overflows from the summit lava lake throughout Wednesday

On Kīlauea Volcano's East Rift Zone, the perched lava pond in Pu‘u ...
April 23, 2018

Kīlauea summit lava lake overflows onto Halema‘uma‘u crater floor

This video shows an overview of the lake from the Halema‘uma‘u Crat...
April 22, 2018

Small overflows from Kīlauea's summit lava lake overnight

Overflows from the perched lava pond within west pit
April 19, 2018

In recent years, scientists have made significant improvements in developing sophisticated models of how volcanoes work. The ultimate goal is to develop models that allow us to forecast new activity.

A virtual flyover of Pu‘u ‘Ō‘ō...
April 19, 2018

A virtual flyover of Pu‘u ‘Ō‘ō

Surface flows on the 61g flow field remain active. Most breakouts a...
April 18, 2018

Ongoing changes at Pu‘u ‘Ō‘ō, with continued breakouts near the vent

Summit deflation leads to slight drop in lake level...
April 17, 2018

Summit deflation leads to slight drop in lake level

830-year-old explosion deposit
April 12, 2018

Three deposits from explosive eruptions at the summit of Mauna Loa are located west, northwest, and east of Moku‘āweoweo, the volcano's summit caldera. In map view, these deposits are fan-shaped. Along the ‘Āinapō Trail, 2.8 to 3.5 km (1.7 to 2.2 mi) southeast of the caldera, several kīpuka expose a fourth distinct explosive deposit.

A closer look at Kīlauea's summit lava lake on Wednesday evening, a...
April 11, 2018

A new USGS Scientific Investigation Report describes 2016 lava lake activity, including lake surface textures and appearance, surface motion, explosions, outgassing and most aspects of the spattering behavior. 

April 1868 Mauna Loa eruption can be seen in this aerial photo
April 5, 2018

Already reeling from a destructive earthquake and deadly tsunami and mud flow on April 2, 1868, Ka‘ū residents on the Island of Hawai‘i hoped for a reprieve, but it was slow to come.

Tsunami Awareness Hawai‘i...
April 2, 2018

Throughout the month, Federal, State, and Local government agencies, the Pacific Tsunami Museum, and other organizations will offer outreach events to increase awareness of Hawaii's tsunami hazards.