According to new research, the last few years, a huge volcano under Yellowstone National Park is growing at an unprecedented pace.
In ancient times, the volcano has been a source of major continental eruptions, but scientists say, his recent activity does not necessarily mean that another catastrophic eruption imminent.
His recent activity is unprecedented in the caldera (kotloobraznaya depression on the top of the volcano site, approx. Mixednews) Yellowstone, but it is not uncommon for other volcanoes around the world. In the new study just revealed that the Yellowstone caldera is more active than scientists previously thought.
"It's very exciting when you see something that is five times more than what you've seen before," said the director of nonprofit UNAVCO Charles Mirtens.
According to the study, which was published in December in the journal Geophysical Research Letters, in 2004, the caldera in some places has increased by 2.8 inches per year, but has since slowed to a rise of 0.2 inches per year.
The growth of the caldera — it's like inflating a bubble. Inflating it could be caused by an expanding and pressing on the caldera magma and gases, as well as hydrothermal fluids that are heated magma, which also puts pressure on the caldera, tells Mirtens. Whatever the reason for the growth of the caldera, it is not a sufficient signal of imminent eruption.
"This is not a harbinger of death," says volcanologist Erik Klemetti, who was not involved in the study. "Apparently, these restless caldera is constantly growing, we fall down, but this in itself does not mean that we can expect an early eruption."
Volcanologists when deciding on a short eruption is based on several factors, he said. Worrying signs typically include an increase of earthquakes under the volcano, the change produced gases, changing the shape of the volcano, as well as heat and steam coming from the top.