When magma rises toward the surface, gases like CO₂ and H₂O separate from the melt because they are lighter. These gases can build up at the top of the chamber, increasing pressure.

If magma is flowing quickly into a large chamber, an eruption may not occur, but if one does the ground will deform enough to warn scientists first.

If magma is flowing quickly into a large chamber, an eruption may not occur, but if one does, the ground will deform enough to warn scientists first.

Magma flowing into larger, flatter chambers may cause minimal earthquakes, while smaller, more elongated chambers may produce little deformation of the ground. But stealthy eruptions only happen when ...

Li’s team built a model to predict how magma flow and the shape, size, and depth of the magma chamber affects its behavior. The results were then compared to data collected from Veniaminof in the ...

Beneath Yellowstone National Park lies something extraordinary—a giant underground chamber filled with molten rock, trapped gases, and intense heat. For years, scientists have known about this ...

That’s something scientists would be able to detect. They also found rapid movement of magma into a small chamber is likely to produce an eruption capable of being detected, not one without warning.

Footage from Scott’s phone recorded the moment he fell in and his sister’s efforts to rescue him. Officials chose not to release this footage. ‘Hot potting’ is in fact illegal in Yellowstone because ...

Kilauea on Hawaii’s Big Island erupts, sending lava fountains over 330 feet high amid an ongoing eruption cycle since December.