Chilean earthquake made volcanoes sink
... Excerpt
Jul. 2, 2013
By Anne Ju
Following a major earthquake in southern Chile in 2010, several nearby volcanoes permanently sank several inches into the ground. Cornell earth scientists think they might know why – and this knowledge could help illuminate the connection between earthquakes and volcanic activity.
Publishing online June 30 in the journal Nature Geoscience, a study led by Matthew Pritchard, associate professor of earth and atmospheric sciences, shows that five volcanic regions within 248 miles of the 8.8-scale earthquake in Maule, Chile, sank up to 6 inches into the ground after the earthquake, almost instantly. This process, called subsidence, has never been seen on this scale in volcanic regions........
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