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Dissolved gas helps Yellowstone's geysers erupt

Dissolved gas helps Yellowstone's geysers erupt

Most models of geyser eruptions start with a simple assumption: eruptions occur as liquid water boils to steam. While that is largely true, if the...

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Volcano Watch — Kīlauea Volcano's summit eruption in Halema‘uma‘u Crater reaches 8th anniversary

Volcano Watch — Kīlauea Volcano's summit eruption in Halema‘uma‘u Crater reaches 8th anniversary

The ongoing eruption at Kīlauea Volcano's summit began on March 19, 2008. Since that time, Island of Hawai‘i residents have had to cope with the...

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Photo and Video Chronology - Kīlauea - March 4, 2016

Photo and Video Chronology - Kīlauea - March 4, 2016

Breakouts persist northeast of Pu‘u ‘Ō‘ō; small lava flows in Pu‘u ‘Ō‘ō Crater

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Volcano Watch — Hawaiian Volcano Observatory geologist receives two prestigious awards

Volcano Watch — Hawaiian Volcano Observatory geologist receives two prestigious awards

USGS Hawaiian Volcano Observatory geologist Don Swanson was recently named as the recipient of two prestigious awards.

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Photo and Video Chronology - Kīlauea - March 2, 2016

Photo and Video Chronology - Kīlauea - March 2, 2016

Lava covers part of the Pu‘u ‘Ō‘ō crater floor

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Volcano Watch — Mauna Loa: Earth's largest active volcano is still stirring

Volcano Watch — Mauna Loa: Earth's largest active volcano is still stirring

Despite not being in the headlines, Mauna Loa continues to be in a state of unrest based on seismic and deformation monitoring data.

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Photo and Video Chronology - Kīlauea - February 24, 2016

Photo and Video Chronology - Kīlauea - February 24, 2016

Current configuration of Pu‘u ‘Ō‘ō crater

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Volcano Watch — Recent earthquake highlights one of Hawai‘i's most hazardous faults

Volcano Watch — Recent earthquake highlights one of Hawai‘i's most hazardous faults

On Friday, February 12, at 9:23 a.m., HST, a magnitude-4.1 earthquake occurred beneath Kīlauea Volcano's south flank.

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USGS HVO Press Release — Magnitude-4.1 earthquake on Kīlauea Volcano's south flank

USGS HVO Press Release — Magnitude-4.1 earthquake on Kīlauea Volcano's south flank

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.1 earthquakelocated beneath Kīlauea Volcano's south flank on...

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Photo and Video Chronology - Kīlauea - February 12, 2016

Photo and Video Chronology - Kīlauea - February 12, 2016

Scattered breakouts northeast of Pu‘u ‘Ō‘ō

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Volcano Watch — Prodigious plumes present provocative puzzle

Volcano Watch — Prodigious plumes present provocative puzzle

In recent weeks, the USGS Hawaiian Volcano Observatory (HVO) has received a number of calls from local residents saying essentially: "Hey, is...

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Volcano Watch — Why you've never heard of Hilo's Kalanakamaa gulch

Volcano Watch — Why you've never heard of Hilo's Kalanakamaa gulch

In 1880–1881, a lava flow from Mauna Loa came very close to entering Hilo Bay.

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