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Chilean Quake Likely Shifted Earth’s Axis, NASA Scientist Says
Posted By admin On March 2, 2010 @ 10:55 am In World News | Comments Disabled
Refreshing News 
March 2, 2010
Earthquakes can involve shifting hundreds of kilometers of rock by several meters, changing the distribution of mass on the planet. This affects the Earth’s rotation, said Richard Gross, a geophysicist at NASA’s Jet Propulsion Laboratory in Pasadena, California, who uses a computer model to calculate the effects.
“The length of the day should have gotten shorter by 1.26 microseconds (millionths of a second),” Gross, said today in an e-mailed reply to questions. “The axis about which the Earth’s mass is balanced should have moved by 2.7 milliarcseconds (about 8 centimeters or 3 inches).”
The changes can be modeled, though they’re difficult to physically detect given their small size, Gross said. Some changes may be more obvious, and islands may have shifted, according to Andreas Rietbrock, a professor of Earth Sciences at the U.K.’s Liverpool University who has studied the area impacted, though not since the latest temblor.
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URLs in this post:
 Refreshing News: http://refreshingnews9.blogspot.com/2010/03/chilean-quake-likely-shifted-earths.html
 Image: http://www.prisonplanet.tv
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 How the Japan Earthquake Shortened Days on Earth: http://www.prisonplanet.com/how-the-japan-earthquake-shortened-days-on-earth.html
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