News

Measurement of volcanic gases is critical for both public safety and understanding volcanic activity—and everything we measure relies on the wind.

While VALT will be missed for sentimental reasons, plans are underway to install a replacement on the crater floor away from the reach of Crater...

For a couple nights in May an extreme solar storm created a beautiful night sky for many people in areas that normally are too far away to see auroras...

Island of Hawaiʻi residents are used to feeling the ground shake beneath them. From subtle shakes that feel like wind, to abrupt jolting that knocks...

The Yellowstone volcanic system is known for its ash-flow tuffs—thick, compressed ash deposits from caldera-forming eruptions. But thinner ash beds...

The upper East Rift Zone (UERZ) of Kīlauea was a shaky place this past weekend. This region extends southeast from Kaluapele (Kīlauea’s summit caldera...

Rhyolite is the most abundant rock in Yellowstone, and it contains about 75% silica. When it reacts with hot groundwater, much of the silica ends up...

On May 15, 2024, our friend and colleague Ed Brown, Associate Director for Infrastructure and Facilities for the USGS Volcano Science Center (VSC)...

What does a beachball have to do with an earthquake?  Turns out, beachballs are key to understanding the characteristics of the fault that slipped to...

During the most active portion of their life cycle, called the shield stage, Hawaiian volcanoes erupt frequently and mostly produce a rock type called...