Detection of Hydrothermal Precursors to Large Northern California Earthquakes

@article{Silver1992DetectionOH,
  title={Detection of Hydrothermal Precursors to Large Northern California Earthquakes},
  author={P. Silver and N. Valette-Silver},
  journal={Science},
  year={1992},
  volume={257},
  pages={1363 - 1368}
}
  • P. Silver, N. Valette-Silver
  • Published 1992
  • Medicine, Geology
  • Science
  • During the period 1973 to 1991 the interval between eruptions from a periodic geyser in Northern California exhibited precursory variations 1 to 3 days before the three largest earthquakes within a 250-kilometer radius of the geyser. These include the magnitude 7.1 Loma Prieta earthquake of 18 October 1989 for which a similar preseismic signal was recorded by a strainmeter located halfway between the geyser and the earthquake. These data show that at least some earthquakes possess observable… CONTINUE READING

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