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A new discovery could help scientists predict -- a volcano is about to blow its top.
Just before Alaska's Mount Redoubt erupted in ninety I'm sorry 2009 it emitted a series of low pitch drum beats and rapid tremors which.
Then increased in frequency until.
The noise is suddenly stopped just a minute or so before the volcano blew its top.
Now here's what it sounds like sped up scientists call it a volcanic scream.
-- -- Size -- just -- evil is director of the western Weston observatory at Boston College doctor evil in this scream bloody it's only been detected at this Mount Redoubt volcano right is that because they weren't looking for -- elsewhere.
Or because it's the only volcano known to screen.
Versions of this phenomenon where you see increases and an earthquake activity.
And Kate Kate.
And amplification of the noise has been seen other volcanoes but it's really an extreme -- -- Which is very interest -- from a scientific point of view so my question is I mean if you monitor all of the other known volcanic sites are you going to be able to -- -- every time in other words will be a valid warning system.
So far we haven't seen screams -- other volcanoes.
Except hints of them here in there.
On the other hand there are lots of volcanoes that are monitored or monitored very well.
And this might be a more common phenomenon that we think what causes it.
Well what causes it is as magma is moving up into the top of law Cano before it explodes out.
It's actually Paulson the volcano and that gives us the vibrations.
And that gives us the the tremors that -- that we detect and sometimes can be hurt.
It has the -- the -- pushes.
Higher up it causes the vibrations to be faster.
And causes this screen type phenomenon and then obviously it eventually blows out the top there's still.
Awful lot you don't know about what's going on down there I mean these things are terribly difficult to study.
Fairly rare it's all happening way underground and you've obviously got some high temperatures involved too.
We have all of there -- and of course that that the big problem is knowing where to look where is a volcano going to.
To erupt and that just means you have to do steady fought panic monitoring here in and year out.
Or one article suggested that volcanoes and and misbehaving young kids have some things in common.
By throwing off this screen before they really -- their top.
Well -- they're there are many analogies that.
That we can make between what people do nor volcanoes do -- as a scientist I find the -- fascinating now I think we all do so that the hope is that you'll be able to plant some of these monitoring devices around other known volcanic gas sites and and perhaps.
Save lives and property the next time one is ready to blow.
We will certainly be looking for these kinds of patterns and more -- -- That at other volcanoes when they become active.
And not just -- -- Alaska differences volcanoes in the lower 48 states like mount saint helens.
As well as volcanoes and -- enough Iceland and hand.
Japan and all throughout the world you you don't -- there in Boston area.
We have no active volcanoes here in Boston it at least that we know -- all right well that's that's good -- parents doctor John evil appreciated.
Thanks to blame -- just in case well you know every now he's here in Boston in the volcanologists.
And -- you don't know anything nearby in the neighborhood that he -- addresses expertise.
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