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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Clear day view of Mauna Loa during tradewind conditions from the su...

Clear day view of Mauna Loa during tradewind conditions from the su...

Clear day view of Mauna Loa during tradewind conditions from the summit of Kīlauea Volcano

Clear day view of PW cam

[PWcam] Puʻu ʻŌʻō West Flank from Puʻu ʻŌʻō

This image is from a research camera positioned on the northwest flank of Puʻu ʻŌʻō, looking southwest. On the morning of May 24, 2016, this camera was rotated to be pointed northeast to follow a new breakout on the east flank of Puʻu ʻŌʻō.

Disclaimer

The webcams are operational 24/7 and faithfully record the dark of night if there are no

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Solar-powered seismic station located near the summit of Mauna Loa ...

Solar-powered seismic station located near summit of Mauna Loa Volcano

Solar-powered seismic station located near the summit of Mauna Loa Volcano, Hawai‘i.

Clear day view of PG cam

[PGcam] Lower East Rift Zone Camera from Lower East Rift Zone

This image is from atop Puʻu Honuaula looking southwest towards Leilani Estates. Fissure 22 is on the far left, and Puʻu Kaliu is the cone left of center on the skyline. The fissure 8 channel wraps from the center of the image to the lower right side of the image.

Disclaimer

The webcams are operational 24/7 and faithfully record the dark of

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At Kīlauea, when the lava column drops below the water table, groun...

At Kīlauea, when the lava column drops below the water table, groun...

At Kīlauea, when the lava column drops below the water table, groundwater may come into contact with with magma or hot rocks, causing violent steam explosions.

USGS
June 20, 2019

Overview of Kīlauea Volcano’s 2018 lower East Rift Zone eruption

A summary chronology and interesting facts about KILAUEA Volcano's 2018 lower East Rift Zone eruption and summit collapse.

Click image above to view PDF.

Cleary day view of R3 cam

[R3cam] Mobile Cam 3

This image is from a research camera positioned on the southeast flank of Puʻu ʻŌʻō, looking toward the northeast and lower east rift zone.

Disclaimer: The webcams are operational 24/7 and faithfully record the dark of night if there are no sources of incandescence or other lights. Thermal webcams record heat rather than light and get better views through volcanic

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Earthquakes beneath Mauna Loa's summit prior to 1975 and 1984 erupt...

Earthquakes beneath Mauna Loa's summit prior to 1975 and 1984 erupt...

Earthquakes beneath Mauna Loa's summit prior to 1975 and 1984 eruptions. Green circles 0-5 km (0-3 mi) deep, red circles 5-10 km (3-10 mi) deep.

Image: GPS monitoring of Hawaiian Volcanoes

GPS monitoring of Hawaiian Volcanoes

The USGS Hawaiian Volcano Observatory uses a variety of ground- and satellite-based techniques to monitor Hawai‘i’s active volcanoes.  Here, an HVO scientist sets up a portable GPS receiver to track surface changes during an island-wide survey of Hawai‘i’s volcanoes.

 

Attribution: Natural Hazards
USGS HVO geochemist measuring gases released from Kīlauea with a Fo...

USGS HVO geochemist measuring gases released from Kīlauea with a Fo...

USGS HVO geochemist measuring gases released from Kīlauea with a Fourier transform infrared (FTIR) spectrometer, an instrument that detects gas compositions on the basis of absorbed infrared light.

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USGS
December 26, 1999

The staff and associates of the U.S. Geological Survey's Hawaiian Volcano Observatory and Kīlauea Field Station extend a warm and cheerful holiday greeting to all of the faithful readers of our column.

USGS
December 19, 1999

An employee of the Hilo Hawaiian hotel recently called the U.S. Geological Survey's Hawaiian Volcano Observatory and asked about the origin of Coconut Island. This is a 1.3-hectare (3.1-acre) island, also known as Mokuola, located in Hilo Bay, just offshore of the hotel on Waiakea peninsula.
 

USGS
December 9, 1999

Last week's heavy rains on the Big Island brought an end to one of the worst seasons for yellowjacket wasps around Mauna Loa in more than a decade.
 

USGS
December 2, 1999

The heavy rain that East Hawai`i experienced this week, particularly on Wednesday night and Thursday morning, suggested the topic for this week's column. Does heavy rain influence eruptions?

USGS
November 26, 1999

The Saddle Road to Pohakuloa Training Area (PTA) might seem noticeably more worn this month.

USGS
November 18, 1999

Here's a question for you trivia aficionados. Since written records began in 1823, what is the longest period of time without an eruption in Kīlauea's caldera? 

USGS
November 11, 1999

Kīlauea's south slope presents a spectacular drive by motorcar because the highway descends steeply to reach the coastal plain.

USGS
November 4, 1999

In 1916, Thomas Jaggar, renowned scientist and founder of HVO, wrote, in a foreword to "Hawaiian Legends of Volcanoes" by Westervelt, that "Everything indicates that Kīlauea is older than Mauna Loa. Mauna Loa with its flows is tending through the ages to bury up Kīlauea?." 

USGS
October 28, 1999

Many visitors come to the summit of Kīlauea, take a quick look into the caldera, say, "Hmmm, that's nice," shrug their shoulders, and move on. All they see is a hole in the ground, big to be sure, but not something that jumps out and grabs them.

USGS
October 21, 1999

For the past two months, reports of large earthquakes and the havoc they cause seem to be constantly in the news. Earthquakes in Turkey, Taiwan, Mexico, and California have made the front pages and the nightly television newscasts. Is world-wide earthquake activity increasing?
 

USGS
October 14, 1999

At the end of their shield-building stage, the summits of Hawaiian volcanoes commonly have large collapsed areas called calderas. Both Kīlauea and Mauna Loa have these summit calderas. After this stage, Hawaiian lava rapidly changes chemistry and evolves into a more pasty form.

USGS
October 7, 1999

For the past two weeks, people have been asking, "Why isn't the eruption going at full speed?," and "Why isn't lava going into the ocean?"