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Thread: Yellowstone Supervolcano May Rumble to Life Faster Than Thought

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    Moderator Harley's Avatar
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    Default Yellowstone Supervolcano May Rumble to Life Faster Than Thought

    Yellowstone Supervolcano May Rumble to Life Faster Than Thought

    A new study of ancient ash suggests that the dormant giant could develop the conditions needed to blow in a span of mere decades.

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    OCTOBER 11, 2017

    If the supervolcano underneath Yellowstone erupts again, we may have far less advance warning time than we thought.

    After analyzing minerals in fossilized ash from the most recent mega-eruption, researchers at Arizona State University think the supervolcano last woke up after two influxes of fresh magma flowed into the reservoir below the caldera.

    And in an unsettling twist, the minerals revealed that the critical changes in temperature and composition built up in a matter of decades. Until now, geologists had thought it would take centuries for the supervolcano to make that transition.

    A 2013 study, for instance, showed that the magma reservoir that feeds the supervolcano is about two and a half times larger than previous estimates. Scientists also think the reservoir is drained after every monster blast, so they thought it should take a long time to refill. Based on the new study, it seems the magma can rapidly refresh—making the volcano potentially explosive in the geologic blink of an eye.

    “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,” study co-author Hannah Shamloo told the New York Times.

    Still, Yellowstone is one of the best monitored volcanoes in the world, notes Michael Poland, the current Scientist-in-Charge of the Yellowstone Volcano Observatory for the U.S. Geological Survey. A variety of sensors and satellites are always looking for changes, and right now, the supervolcano does not seem to pose a threat.

    "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," says Poland via email, adding that the research overall is "somewhat preliminary, but quite tantalizing."

    The new paper adds to a suite of surprises scientists have uncovered over the last few years as they have studied the supervolcano. (Also find out about a supervolcano under Italy that has recently been rumbling.)

    Read more at National Geographic
    Harley

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    United States Avalon Member ghostrider's Avatar
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    Default Re: Yellowstone Supervolcano May Rumble to Life Faster Than Thought

    Gotta chime in on this , according to Sfath the great cauldara will erupt , and has been building for thousands of years ... according to the information , they traveled back in time to view the last eruption, made calculations , as well as using their psychic people (their race has gifted individuals like ours) the volcano will will erupt and cause much devastation and cost many lives ... everything is a circle, it builds , it blows, it builds , it blows ... Has always done this and will continue to follow nature’s circle/cycle of life ... They also speak of La Palma in Italy, we are urged to grade down the west side of the mountain to lessen the tsunami that will be created when it erupts ...they say part of the west side will break off and slide into the ocean creating a tsunami that will affect the east coast of America... Even though I keep pressing them, they won’t give the exact date, because warnings were given in the past and mankind took no heed to their warnings... They warn , Yellowstone will blow, Oregon will experience a mega sea quake, a volcano in The Canary Islands will effect America, typhoons, firestorms, floods, will come to America for her reaping of what she has sown across the world , in trying to acheive global domination... they have warned about these events for over 60 years ...
    Raiding the Matrix One Mind at a Time ...

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    France Moderator Hervé's Avatar
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    Default Re: Yellowstone Supervolcano May Rumble to Life Faster Than Thought

    Yellowstone supervolcano threat theory 'demonstrably false' - USGS expert to RT

    RT
    Sun, 03 Dec 2017 16:36 UTC


    Yellowstone National Park, a favored site of supervolcano doomsayers. © Jim Urquhart / Reuters

    If you spend any time on the internet, it seems every few months humanity is faced with a looming existential threat from the depths of space. Planet X/Nibiru, the rapture or a wayward comet are, according to conspiracy theorists, destined to destroy us.

    However, there is one particular conspiracy, treasured by theorists, that our impending doom will come from within planet Earth - that lurking beneath America's Yellowstone National Park is a supervolcano that will kill us all.

    Yellowstone, in the midwestern US, is - they claim - about to erupt and send unfathomable amounts of matter into the sky, covering anyone in the vicinity in a pyroclastic flow of ash and rock, and blocking out the sun, wiping out almost all life on Earth in the process.

    Conspiracy theories tend to draw on some grain of truth. The super volcano really has erupted before, three times in fact, over the last 2 billion years or so, but the theory goes that it's bound to do so again soon, right? RT.com caught up with Michael Poland, Scientist-in-Charge at the Yellowstone Volcano Observatory, to find out the full extent of this lurking supervolcanic 'threat.'


    Yellowstone National Park © USGS

    Poland specializes in volcano geophysics, particularly in how volcanoes change and behave over time. Using GPS, satellites and other methods, he studies how the surface of Yellowstone National Park moves to figure out what's happening below.


    Firstly, what is a super volcano?
    "Super volcanos, or super eruptions, are these eruptions that are on the eruption intensity scale, there's something called the volcano explosivity index (VEI) and eruptions that have a VEI of eight are considered super eruptions. And that's pretty massive, most eruptions that we see would be VEI three, four. Big ones are five and then once a century or so there's a six, so a VEI eight is really, really tremendous."

    What would it take to cause one?
    "You have to have a really amazing amount of magma in the subsurface, so that's one of the criteria. In order to be able to put all of that stuff onto the surface and into the atmosphere you have to have it below the surface to begin with. And I think that's something that is interesting about Yellowstone. We don't know whether there's enough magma beneath the surface to have a super eruption, the evidence suggests that a lot of the magma reservoir is actually solid, and about 50 percent of it is molten, so there may not be enough down there to have a super eruption."

    With that in mind, what are the odds of Yellowstone blowing it's top?
    "I think the odds of a supereruption in our lifetime, in our children's lifetimes, in our grandchildren's lifetimes are astronomically small. I couldn't even quantify it, it's not something I'm worried about."

    "I find it strange that Yellowstone is the volcano that's 'going to doom humanity.' One of the things that bothers me about that is that there have been super eruptions when humans have been on the planet. There've been two and, in fact, both of those were larger than the last Yellowstone eruption. There was one about 74,000 years ago from Indonesia and there was one 27,000 years ago from New Zealand. Both of those were larger than the last eruption at Yellowstone and humanity survived."

    What about so-called earthquake swarms at Yellowstone? And wasn't there a particularly strong swarm earlier this year, 4.5 on the richter scale?
    "Yeah 4.5 is definitely noticeable, you'd feel it and people did, but there was a 4.8 in 2014 and there was a 7.5 in 1959. Certainly this summer's swarm was really impressive, there were thousands of earthquakes, but that's sort of what Yellowstone does. It has swarms all the time and one of them has to be the largest. I don't see that as something to fear, however, instead I see it as an enormous opportunity for study."

    "The idea that Yellowstone is going to erupt and kill us all is so demonstrably false. There's an odd disconnect I think between common sense and reality and what we know to be true and false based on past events and this irrational fear about yellowstone in particular."
    "La réalité est un rêve que l'on fait atterrir" San Antonio AKA F. Dard

    Troll-hood motto: Never, ever, however, whatsoever, to anyone, a point concede.

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