According to The Times, Shamloo later analyzed crystals from the team's dig that recorded changes in temperature, pressure and water content beneath the volcano - much like a set of tree rings.
Geologists have earlier suggested the supervolcano could take centuries before it explodes. Researchers additionally think the repository is depleted after each beast impact, so they figured it should require a long investment to refill. "It's shocking how little time is required to take a volcanic system from being quiet and sitting there to the edge of an eruption", ASU graduate student Hannah Shamloo told the New York Times.
"We see interesting things all the time. but we haven't seen anything that would lead us to believe that the sort of magmatic event described by the researchers is happening", he said.
Since the last supereruption at Yellowstone, there have been dozens of other eruptions at the national park that were minor.
Features of the park, such as the Old Faithful geyser and the Grand Prismatic Spring that attract visitors from around the world, are signs of a huge magma reservoir rumbling below.
Such an eruption would be catastrophic, expelling 240 cubic miles of molten rock and ash.
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According to ZME Science, Yellowstone has erupted at least three times; the last time was approximately 630,000 years ago.
A previous eruption happened 1.3 million years ago, roughly the same timeframe before that, which means the volcano may have another explosion anytime soon.
The new discovery, which was presented in August, comes after another study in 2011, in which researchers found the ground above the magma chamber bulged by up to 25 centimetres in a span of about seven years. Lucky for us, the supervolcano has been largely dormant since before the first people arrived in the Americas.
"It's an exceptional elevate, in light of the fact that it covers such a substantial region and the rates are so high", the University of Utah's Bob Smith, a specialist in Yellowstone volcanism, revealed to National Geographic at the time.
In 2012, another group detailed that no less than one of the past super-emissions may have truly been two occasions, indicating that such substantial scale occasions might be more typical than thought. They get labeled supervolcanoes only after they've already erupted to that magnitude.
For its part, the U.S. Geological Survey puts the rough yearly odds of another massive Yellowstone blast at 1 in 730,000.