Irregular Recurrence of Large Earthquakes Along the San Andreas Fault: Evidence from Trees

@article{Jacoby1988IrregularRO,
  title={Irregular Recurrence of Large Earthquakes Along the San Andreas Fault: Evidence from Trees},
  author={Gordon C. Jacoby and Paul R. Sheppard and Kerry Sieh},
  journal={Science},
  year={1988},
  volume={241},
  pages={196 - 199}
}
Old trees growing along the San Andreas fault near Wrightwood, California, record in their annual ring-width patterns the effects of a major earthquake in the fall or winter of 1812 to 1813. Paleoseismic data and historical information indicate that this event was the "San Juan Capistrano" earthquake of 8 December 1812, with a magnitude of 7.5. The discovery that at least 12 kilometers of the Mojave segment of the San Andreas fault ruptured in 1812, only 44 years before the great January 1857… 

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