Richard Gross, a geophysicist at NASA’s Jet Propulsion Laboratory in Pasadena, California, used a computer model to calculate the effects. He said:
“The length of the day should have gotten shorter by 1.26 microseconds (millionths of a second). The axis about which the Earth’s mass is balanced should have moved by 2.7 milliarcseconds (about 8 centimeters or 3 inches).”
While miniscule amounts, considering the size and mass of the Earth, it shows just how much power the earthquake carried. The Chilean earthquake was estimated to provide 500 more energy than the 7.0 January 12th Haitian earthquake. However, damage and casualties have been less due to better infrastructure and Chile's strict building codes.
Chile and its residents are well aware of earthquake dangers. The largest recorded earthquake was the 1960 Great Chilean Earthquake (shown above). It measured 9.5 on the Richter scale. The Richter scale is base-10 logarithmic, so each increase by 1 point amounts to a 10-fold increase in shaking amplitude.
END AKISMET -->
This article has been flagged as spam, if you think this is an error please contact us.