U.S. Volcano Getting Ready to Blow
South Sister volcano in Oregon?s Cascade Range is beginning to show signs of erupting after lying dormant for thousands of years. Although indications are that an eruption is not likely to occur anytime soon, scientists are increasing their vigilance, which is located approximately 22 from miles from Bend, Oregon.
About a year ago, scientists at the U.S. Geological Survey (USGS) detected a bulge in the Earth’s crust near the base of South Sister volcano. Using high-precision radar data from satellites, Charles Wicks and his colleagues found that the ground west of South Sister had swelled about 4 inches since 1996. This swelling has continued at a rate of about 1 inch every year.
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