Foreshocks may warn that a big quake is coming
Advance warning is the ultimate prize for earthquake studies. Now, for the first time, one study offers tantalising evidence that it may be possible to build such a system to warn of some impending large quakes about an hour before they strike. The finding comes from an analysis of the seismic record from the lead-up to a devastating earthquake that hit Turkey in 1999. Image: martinluff
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