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Article Summary : What Lies Beneath The America?

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Article Summary of What Lies Beneath in America?
Submitted by
Dina Martinez
El Centro College
GEOL 1401, Section 51426, Fall 2014
Article Summary of What Lies Beneath in America? USArray is a huge seismology project. The purpose is to basically take an ultrasound of the contiguous United States to understand the past and possibly the future of what goes on underneath the surface. Our current picture is mostly blurry, full of educated guesses and theories. By capturing all the sounds underneath and on the earth’s surface, a 3D picture will emerge that will clear the picture for us dramatically. We will be able to see what goes on underground all the way to where the mantle touches the core, maybe even further (Courtland, 2009).
The project consists of 400 seismometers that are buried underground in a remote, quiet place for 2 years, power by the sun. The seismological readings are continuously being relayed by satellite to a center in Seattle. These seismometers are about 70 kilometers apart. After 2 years, they get pulled and buried again more eastward eventually reading the entire contiguous states. After many years, we get have a clear picture of what goes on underneath. A total of 1624 sites are planned (Courtland, 2009).
2004 in California was the beginning of the project. During the writing of Courtland’s article, it was covering the Rocky Mountains. The plan moves eastward covering the entire vertical area as it moves along. While covering the Rocky Mountains, it

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