A Yellowstone Supervolcano Surprise

Above, one of Yellowstone's volcanic hot springs. Photo by Armand Vaquer.

This past summer, there have been record numbers of tremors originating from Yellowstone National Park. These tremors attracted the curiosity of scientists.

The scientists found that the supervolcano beneath Yellowstone could be getting ready to erupt.

The New York Times reported:

Beneath Yellowstone National Park lies a supervolcano, a behemoth far more powerful than your average volcano. It has the ability to expel more than 1,000 cubic kilometers of rock and ash at once — 250,000 times more material than erupted from Mount St. Helens in 1980, which killed 57 people. That could blanket most of the United States in a thick layer of ash and even plunge the Earth into a volcanic winter. 

Yellowstone’s last supereruption occurred 631,000 years ago. And it’s not the planet’s only buried supervolcano. Scientists suspect that a supereruption scars the planet every 100,000 years, causing many to ask when we can next expect such an explosive planet-changing event. 

To answer that question, scientists are seeking lessons from Yellowstone’s past. And the results have been surprising. They show that the forces that drive these rare and violent events can move much more rapidly than volcanologists previously anticipated.

To read more, go here.