Scientists win round in fight to demystify earthquakes, finding quick way to spot the tiniest shakers by Bryce HODGSON

The 6.7 Northridge quake caused portions of Interstate 5 at Gavin Canyon to collapse. USGS

The 6.7 Northridge quake caused portions of Interstate 5 at Gavin Canyon to collapse. USGS

Researchers have discovered that they overlooked nearly 2 million tiny earthquakes between 2008-17 — a revelation that came to light when they made an ambitious change in the way they study seismicity.

UCSD, Caltech and its collaborators now take the prodigious amounts of data they get from the 500 seismometers that cover Southern California and analyze it with sophisticated new software programs and extraordinary amounts of computing power. For the first time, it allows them to detect the smallest quakes, even ones a person couldn’t feel if they were standing on the fault.

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