Further Evidence of Localized Geomagnetic Field Changes Before the 1974 Thanksgiving Day Earthquake, Hollister, California

@inproceedings{Davis1980FurtherEO,
  title={Further Evidence of Localized Geomagnetic Field Changes Before the 1974 Thanksgiving Day Earthquake, Hollister, California},
  author={Paul M. Davis and David D. Jackson and Malcolm J. S. Johnston},
  year={1980}
}
Seven weeks prior to the M=5.1 Hollister, Calif., Thanksgiving Day earthquake of 28 November, 1974, an anomalous magnetic varia- tion was observed at one of the magnetometers of the USGS array. The anomaly lasted for about three weeks. Recently developed methods of re- ducing noise on magnetic records reveal that an- omalous magnetic changes occurred at about the same time at three of the six stations analysed. Such changes have not been seen either previously or subsequently. The largest… CONTINUE READING