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The mountain that roared

The mountain that roared

Between Norris Geyser Basin and Mammoth Hot Springs is an interesting thermal area known as Roaring Mountain.  These days, it is quieter than it used...

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Volcano Watch — Recent intrusions follow pattern of previous events

Volcano Watch — Recent intrusions follow pattern of previous events

Since July 2024 activity, at Kīlauea has been punctuated by two periods of intense unrest, centered on the upper East Rift Zone (ERZ). The periods...

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New study seeks to shed light on earthquake hazards in the Gallatin Range

New study seeks to shed light on earthquake hazards in the Gallatin Range

Earthquakes that rupture the ground surface leave behind the telltale signature of fault scarps, which provide clues about seismic activity in the...

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Volcano Watch — Webcam upgrades keep a sharp eye on Hawaiian volcanoes

Volcano Watch — Webcam upgrades keep a sharp eye on Hawaiian volcanoes

Photography has been a crucial part of volcano monitoring in Hawaii going back to the start of the USGS Hawaiian Volcano Observatory (HVO). In 1911...

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Quartz crystals record cooling of deposits from super eruptions

Quartz crystals record cooling of deposits from super eruptions

What did the Yellowstone landscape look like after one of its large caldera-forming eruptions? Clues from crystals suggest it might have resembled...

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Volcano Watch — Introducing the Island of Hawaiʻi Interagency Operations Plan for Volcanic Eruptions

Volcano Watch — Introducing the Island of Hawaiʻi Interagency Operations Plan for Volcanic Eruptions

Last month, the Hawaiʻi County Civil Defense Agency, Hawaiʻi Volcanoes National Park, and the U.S. Geological Survey (USGS) Hawaiian Volcano...

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Hydrothermal explosions—a worldwide phenomena

Hydrothermal explosions—a worldwide phenomena

Hydrothermal explosions, like that which occurred on July 23, 2024, in Biscuit Basin, are not just a hazard that occurs in Yellowstone.

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Yellowstone thermal features, from Apollinaris to Zomar

Yellowstone thermal features, from Apollinaris to Zomar

With over 10,000 thermal features, Yellowstone is covered from A to Z. Well, almost…

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Volcano Watch — Aʻo pū mākou: We learn together with PIPES

Volcano Watch — Aʻo pū mākou: We learn together with PIPES

The Pacific Internship Programs for Exploring Science (PIPES) is celebrating its 30th anniversary of growing the next generation of aloha ʻāina...

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Digging into the history of hydrothermal explosions at Biscuit Basin

Digging into the history of hydrothermal explosions at Biscuit Basin

In July 2024, a hydrothermal explosion at Black Diamond Pool sent muddy water and rocks hundreds of feet into the air. It’s far from the first time a...

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Volcano Watch — Kīlauea’s 2019–2020 lake: recalling the watery intermission between eruptions

Volcano Watch — Kīlauea’s 2019–2020 lake: recalling the watery intermission between eruptions

Remember when a little puddle of green water was spotted in Halemaʻumaʻu? Time flies, because that was late July 2019—over five years ago! And because...

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The probability of hydrothermal explosions in Yellowstone

The probability of hydrothermal explosions in Yellowstone

How often do hydrothermal explosions occur in Yellowstone National Park? It all depends on the size of the event.

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