USGS to Map Underground Fault Lines in Fluvanna, Louisa CountiesPosted: Updated: July 9, 2012 11:05 PM EDT
Starting Tuesday, the U.S. Geological Survey will begin mapping the underground fault that caused last summer's earthquake.
Low-flying aircraft will be used to do the mapping, with some passes being as close to the ground as 400 feet. The planes will be flying around Louisa, Goochland and Fluvanna counties.
The planes will take measurements of the earth's magnetic and gravitational pull.
The flights are scheduled to run from July 10 to July 20, depending on weather.