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Yellowstone supervolcano is showing signs of strain 6 - fox news

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Yellowstone supervolcano is showing signs of strain 6 - fox news Volcanoes experience strain from pressures just like humans - but now, scientists say they can measure exactly how much physical strain is on them.Researchers monitoring the Yellowstone supervolcano in Wyoming have detected molten rock about three miles below the surface.While it is not dangerous, the scientists have warned that slight shifts in the environment around the volcano can add up and create significant change over time.The technologies they use can detect changes in volcanic strain smaller than the width of a hydrogen atom.Geodesists David Mencin and Glen Mattioli say these measurements can advance scientists' understanding of volcanic activity.Their work, published this week in Yellowstone Caldera Chronicles, explains what these measurements can tell us about the national park's 'plumbing'.Mencin and Mattioli fleshed out the comparison between strain put on humans and volcanoes in their report.It said: 'We all know what it is like to experience strain.The pressures of everyday life can leave you feeling contorted and stretched.'It turns out, volcanoes are no different - they experience strain as well.' When a volcano experiences strain it changes shape.Specifically, the shape of its subsurface rock changes, the authors said.This process is called deformation.A number of forces can cause deformation.If its magma pressure or the amount of water filling nearby lakes change, a volcano can be subject to deformation.These pressures can be measured by GPS technology comb Source: http://www.dailymail.co.uk/sciencetech/article-5387367/Yellowstone-supervolcano-measurable-strain.html
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