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Fluid injection triggers earthquakes indirectly, study finds

Artificially induced tremors start with slow, smooth slipping

induced earthquake

SHAKE UP  Researchers triggered and carefully monitored earthquakes along a fault beneath an underground research facility in southeastern France. The fault slid smoothly at first before sparking quakes, the researchers found.

Yves Guglielmi

By Thomas Sumner

- More than 2 years ago

The first up-close look at artificially triggered tremors suggests seismicity caused by human activities starts slow before shaking things up.