ATLANTA, Dec. 23 (UPI) -- Using GPS to study changes in the Earth's shape allowed a forecast of the size and location of a 2012 magnitude 7.6 earthquake in Costa Rica, scientists report.
Because earthquakes greater than about magnitude 7.5 have occurred on Nicoya Peninsula about every 50 years, with the previous event striking in 1950, scientists were ready with GPS to map out the area along the fault storing energy for release in a large earthquake.