Mail Online,By Sarah Griffiths
New research has discovered that volcanoes can sometimes 'scream' at ever-higher pitches just before they erupt.
Scientists at the University of Washington analysed an eruption sequence at Alaska's Redoubt Volcano and found what they describe as audible 'screams' that followed seismic activity as the changed from steady pulses to rapid tremors.
The researchers also believe that this research and the rise in the frequency of earthquakes and the tremors they cause in the ground could be used to predict future volcanic eruptions.
The study said that it is not unusual for swarms of small earthquakes to precede a volcanic eruption.
They can reach a point of such rapid succession that they create a signal called a 'harmonic tremor' that is inaudible to humans as it is such a low frequency.
The researchers analysed an eruption sequence at Alaska’s Redoubt Volcano in March 2009.
They found that the harmonic tremor rose to substantially higher frequencies and then stopped abruptly just before six of the eruptions.
Read More:
http://www.dailymail.co.uk/sciencetech/article-2365432/Volcanoes-SCREAM-erupting-say-scientists.html
Comments
this is really cool and all,
this is really cool and all, but i can't help but think of Dragon Ball Z and laugh in delight.
Comon Yous Guys
Anything would scream like hell if it was regurgitating hot, molten lava at 1 million degrees Fahrenheit. It's like a bad case of indigestion and heartburn except it's a trillion times worse.
lolololmfaolololol
Hey, I'm Having a Hard Time of It
Besides being financially broke it's not like going from 3-d to 5-d everyday. I feel like Rodney Dangerfield, I mean I get no respect. I ask my wife "don't you feel different each day?" She says
"No, I'm still married to you."
What a coincidence, so do I