(Callum Hoare) YELLOWSTONE volcano scientist Dr Mike Poland has warned of the “devastating” capacity of the volcano after his team performed simulations of ashfall across the US in the event of a supereruption.
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by Callum Hoare, December, 30th, 2020
The caldera inside Yellowstone National Park was formed during the last three big events over the past 2.1 million years. It is constantly monitored by the USGS (United States Geological Survey) for any changes to the system that could suggest history is going to repeat itself. Scientist-in-charge of the Yellowstone Volcano Observatory (YVO), Dr Poland, laid bare the sobering power of the volcano during the USGS’s ’Overview, Monitoring, Hazards, and Noteworthy Results’ video.
He said: “The Yellowstone system is composed of multiple magma chambers. We have this mantle-melting anomaly deep beneath the surface.
“But there’s a couple of magma chambers that this melting anomaly feeds.
“One is quite deep, 15 miles or so beneath the surface, and it’s full of very low viscosity magma called basalt.
“That’s the kind of thing that erupts from Hawaii, low viscosity, it flows very easily.
Yellowstone volcano poses a significant threat (Image: GETTY)
“In turn, that basaltic magma body feeds a higher-level reservoir of rhyolite – a sticky magma, prone to be more explosive, and this sits about three miles beneath the surface in parts of Yellowstone.”
Dr Poland explained why these chambers are not thought to be full of molten rock.
He added: “But don’t think of these as gigantic magma bodies that are just full of roiling, boiling liquid material.
“In fact, most of this is solid. The upper reservoir is only five to 15 percent molten, and this lower reservoir here is only about two to five percent molten.
“It’s a mushy plastic-y zone with little bits of melt in the middle.
A Yellowstone eruption would be devastating (Image: GETTY)
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I looked at the NPS website for Yellowstone and there is no such warning. The only warning is for the covid 19 pandemic, or plan-demic. Here is the link, for winter travel in the park, https://www.nps.gov/yell/planyourvisit/visiting-yellowstone-in-winter.htm . Look things up, find the facts.