Seismic evidence for an earthquake nucleation phase.

  title={Seismic evidence for an earthquake nucleation phase.},
  author={William L Ellsworth and Gregory C. Beroza},
  volume={268 5212},
Near-source observations show that earthquakes initiate with a distinctive seismic nucleation phase that is characterized by a low rate of moment release relative to the rest of the event. This phase was observed for the 30 earthquakes having moment magnitudes 2.6 to 8.1, and the size and duration of this phase scale with the eventual size of the earthquake. During the nucleation phase, moment release was irregular and appears to have been confined to a limited region of the fault. It was… CONTINUE READING

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