Chile Earthquake Altered Earth Axis, Shortened Day

Discussion in 'News and views' started by gaggan4392, Mar 3, 2010.

  1. gaggan4392

    gaggan4392 New Member

    Saturday's Chile earthquake was so powerful that it likely shifted an Earth axis and shortened the length of a day, NASA announced Monday.

    By speeding up Earth's rotation, the magnitude 8.8 earthquake—the fifth strongest ever recorded, according to the USGS—should have shortened an Earth day by 1.26 millionths of a second, according to new computer-model calculations by geophysicist Richard Gross of NASA's Jet Propulsion Laboratory in California.

    For comparison, the same model estimated that the magnitude 9 Sumatra earthquake in December 2004 shortened the length of a day by 6.8 millionths of a second.

    Read full here:

    NatGeo News - Earth

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