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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Map of proximal flow field with thermal overlay...
February 23, 2015

This map overlays a georegistered mosaic of thermal images collected during a helicopter overflight of Kīlauea’s active East Rift Zone lava flow near Pu‘u ‘Ō‘ō on February 23 at about 12:00 PM.

Map of distal flow field with thermal overlay...
February 23, 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 February 23 at about 12:30 PM.

Map of distal flow field...
February 23, 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 flow field...
February 19, 2015

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

Large-scale map of flow field...
February 19, 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...
February 19, 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 February 19 at about 10:30 AM. 

Map of distal part of flow field...
February 19, 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...
February 14, 2015

This satellite image was captured on Saturday, February 14, by the Advanced Land Imager instrument onboard NASA's Earth Observing 1 satellite.

Thermal overlay of distal part of flow field...
February 10, 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 lav£a flow on February 10 at about 12:30 PM. 

Small-scale map of Kīlauea's East Rift Zone lava flow...
February 10, 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...
February 10, 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 10, 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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Near Kīlauea Visitor Center, the Ha‘akulamanu trail within Hawai‘i Volcanoes National Park passes through the Sulphur Banks area
May 13, 2021

Kīlauea summit overflight - May 13

Near Kīlauea Visitor Center, the Ha‘akulamanu trail within Hawai‘i Volcanoes National Park passes through the Sulphur Banks area. Fumaroles in this area emit different sulfur gases, including sulfur dioxide (SO2) and hydrogen sulfide (H2S), and are sampled approximately every three months by USGS Hawaiian Volcano Observatory gas geochemists to track

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USGS Hawaiian Volcano Observatory geologists observed fluid lava on the surface of the lava lake in Halema‘uma‘u, at the summit
May 13, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—May 13, 2021

USGS Hawaiian Volcano Observatory geologists observed fluid lava on the surface of the lava lake in Halema‘uma‘u, at the summit of Kīlauea, while monitoring the eruption on May 13. Two areas of ponded lava exhibited foundering, during which more-dense solidified crust sinks into the lava lake and is replaced by less-dense liquid lava from below. This photo shows the

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The area of solidified crust at the surface of Halema‘uma‘u's lava lake, has been growing over the past several weeks
May 13, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—May 13, 2021

The area of solidified crust at the surface of Halema‘uma‘u's lava lake, at the summit of Kīlauea, has been growing over the past several weeks. This may make it seem that the eruption is over but lava continues to be supplied to the lava lake from below. With National Park Service permission, USGS Hawaiian Volcano Observatory geologists observe this eruption from within

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The eruption in Halema‘uma‘u, at the summit of Kīlauea, continues
May 13, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—May 13, 2021

The eruption in Halema‘uma‘u, at the summit of Kīlauea, continues. Gas emissions, last measured on May 12, were 225 tonnes per day. This photo, taken on May 13, shows the bluish-tinged plume of volcanic gas being emitted from the western vent complex within Halema‘uma‘u crater. USGS image by K. Mulliken.

Digital elevation model of crater and lava lake
May 13, 2021

Halema‘uma‘u DEM May 13, 2021

A helicopter overflight on May 13, 2021, at approximately 11:30 a.m. HST allowed for aerial visual and thermal imagery to be collected of the eruption within Halema‘uma‘u crater at the summit of Kīlauea Volcano. The visual images were used to create a digital elevation model (DEM) of the crater, shown here. The many islands and levees formed at different times during the

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A wide view of Halema‘uma‘u from the western crater rim, at the summit of Kīlauea
May 12, 2021

Halema‘uma‘u eruption activity on May 12, 2021 — Kīlauea summit

A wide view of Halema‘uma‘u from the western crater rim, at the summit of Kīlauea. The west vent (lower left) continues to supply lava into the lake through a submerged inlet. Much of the western active lava lake surface has crusted over in the last few weeks as the effusion rate remains low. USGS photograph taken by D. Downs on May 12, 2021.

A close up view of the western portion of the lava lake within Halema‘uma‘u, at Kīlauea summit
May 12, 2021

Halema‘uma‘u eruption activity on May 12, 2021 — Kīlauea summit

A close up view of the western portion of the lava lake within Halema‘uma‘u, at Kīlauea summit. A weak gas plume is emitted from the western fissure vent (left), with the most recent sulfur dioxide emission rate measured at 150 tonnes per day on May 11. USGS photograph taken by D. Downs on May 12, 2021 from the west rim of Halema‘uma‘u.

On the west side of Mauna Loa summit, a campaign GPS (center-right) measures its location for a period of 2–3 days
May 11, 2021

Mauna Loa campaign GPS survey—May 11, 2021

On the west side of Mauna Loa summit, a campaign GPS (center-right) measures its location for a period of 2–3 days. This site has been occupied every year by helicopter since 1994. Mauna Kea, Hualālai and Haleakalā can be seen in the distance. USGS photo taken by S. Conway on May 11, 2021, during the 2021 Mauna Loa GPS campaign survey. 

HVO geophysicists completed the annual high-precision Global Positioning System (GPS) survey of Mauna Loa
May 11, 2021

Global Positioning System (GPS) survey of Mauna Loa recently completed

Recently, HVO geophysicists completed the annual high-precision Global Positioning System (GPS) survey of Mauna Loa. The annual survey supplements HVO's continuous GPS monitoring stations and provides information on vertical and horizontal deformation of the ground surface. These measurements inform HVO about the volume changes within subsurface magma reservoirs at Mauna

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During the annual Mauna Loa GPS campaign, 33 campaign stations are occupied with GPS instruments for days to weeks
May 11, 2021

Annual Mauna Loa GPS Survey—2021

During the annual Mauna Loa GPS campaign, 33 campaign stations are occupied with GPS instruments for days to weeks. The stations are spread across the flanks of the volcano and provide a synoptic picture of deformation on the volcano over the past year. The location of this survey was on the north flank of Mauna Loa, with clear views of Mauna Kea visible in the background

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GPS survey benchmark being occupied on Mauna Loa's north flank
May 11, 2021

Annual Mauna Loa GPS Survey—2021

Another GPS survey benchmark being occupied on Mauna Loa's north flank, with clear views of Mauna Kea in the background. The metal disk on the ground beneath the tripod is the benchmark, which is cemented to the lava flow surface. Each year, the high-precision GPS unit is centered on the benchmark, and the height of the GPS unit on the tripod is accounted for when

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Color map of lava lake at volcano summit
May 7, 2021

May 7, 2021—Kīlauea summit eruption contour map

This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines (dark gray) that mark locations of equal elevation above sea level (asl). The map shows that the lava lake has filled 229 m (751 ft) of the crater, to an elevation of 746 m (2448 ft) asl since the eruption began on December 20, 2020. Contour lines highlighted in green, purple, and blue mark

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November 20, 2019

Monitoring gases and investigating thermal areas.

HVO scientists performed some preliminary tests of the water at the caldera rim
October 29, 2019

Video of the water sampling at Kīlauea summit with an unmanned aircraft system

image related to volcanoes. See description
October 28, 2019

Water sampling at Kīlauea summit with an unmanned aerial system

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October 25, 2019

Continued slow rise of water level at bottom of Halema‘uma‘u

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October 19, 2019

Water pond at Kīlauea summit continues to rise and enlarge

The Great Hawaii ShakeOut: Get ready toàDrop, Cover, and Hold on!...
October 17, 2019

HVO staff practice Drop, Cover, and Hold during the Great Hawaii ShakeOut

Volcano crater
October 10, 2019

New USGS video posted online:  "Water appears in Halema‘uma‘u"

image related to volcanoes. See description
September 27, 2019

Continued slow rise of water at the bottom of Halema‘uma‘u

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September 24, 2019

HVO measures water table at Keller Well

Screen shot of a USGS geonarrative showing Kilauea
September 19, 2019

A new USGS geonarrative provides a brief overview of recent Kīlauea eruptions, highlighting the circumstances leading up to and summarizing the 2018 events.

image related to volcanoes. See description
September 17, 2019

Stable temperatures at Halema‘uma‘u water pond

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September 14, 2019

Halema‘uma‘u water pond on September 14