Yellowstone supervolcano eruption 2015: Even mild earthquakes are taken seriously, eruption to cause massive destruction
Supervolcanoes, when erupt, emit thousands of times more ash and lava compared to the normal volcano eruptions. When a volcano in Ireland can close its airspace to aircraft, think of a supervolcano and how badly it will impact not just aviation but also normal life over a large geographical area.
Yellowstone National Park sits on one of the largest known supervolcanoes in the world. Though there is no known history of its eruption in recent years, scientists claim that the last eruption was some 640,000 years ago. They claim that overall, the Yellowstone National Park supervolcano has erupted three times thus far and suggest that every time it erupted, it actually drastically changed the North American geological landscape. They have also claim that all the three perceived super-volcanic eruptions had far-reaching impacts felt across the world on world ecology and environment.
There is no denying the fact that it is the most well-researched super volcano in the world. A very well equipped observatory keeps a round-the-clock check on everything happening underneath this massive facility.
A noted volcanologist and assistant professor with the Department of Geosciences at Idaho State University Dr. Shannon Kobs Nawotniak says â€œNobody has ever seen a supervolcano erupt, and thereâ€™s never been any human documentation of an event like this occurringâ€¦The last eruption at Yellowstone occurred long before humans came to North America.â€
Scientists have been talking about the possible impact of the eruption here. Dr Bob Smith believes a supervolcano eruption under Yellowstone would cover the western U.S with ash that would also enter the jet stream potentially crippling air travel and the worldâ€™s food supply. â€œThe actual hazard is the same, but now we have a much better understanding of the complete crustal magma system,â€ says he. Researchers are of the opinion that the overwhelming bulk of their magma cavities comprise scorching â€” yet solid â€” rock, which is hollow, like sponges, and filled with pockets of liquefied rock. An eruption in the next few thousand years is extremely unlikely, the USGS says. The Utah scientists put the yearly chance at 1 in 700,000 â€” about the odds that you will be struck by lightning. Nonetheless despite the low chance of eruption, it remains the most talked about issue among seismologists and others in the US.
In the meantime other scientists claim that any eruption will create doomsday type panic. Dr. Mike McCurry, a volcanologist and professor at ISUâ€™s Department of Geosciences, said Yellowstone would go through an â€œunzippingâ€ process before a supereruption. Massive rifts would start to form in the park, and lava reservoirs would move to the surface, some potentially as large as 30 miles across. Scientists are of the view that judging from evidence from the last supereruption, this violent movement in the Earth would be concluded by a massive eruption. The explosion would send molten rock and debris in every direction, killing and destroying everything within a 50-mile radius. The sound of the explosion would be among the loudest sounds ever heard.
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