LOS ANGELES The vast majority of earthquakes we feel come soon after smaller ones, according to new research that provides unprecedented insights into how seismology works.
Sometimes days or even weeks before most temblors of at least magnitude 4.0 strike, scientists have found, smaller ones start rippling beneath the Earths surface activity that can be detected thanks to an advanced computing technique.
One of the biggest questions in earthquake seismology is how earthquakes get started, said the studys lead author, Daniel Trugman, a seismologist at Los Alamos National Laboratory.
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