Seismic studies: South central Illinois earthquake of November 9, 1968

@article{Stauder1970SeismicSS,
  title={Seismic studies: South central Illinois earthquake of November 9, 1968},
  author={William Stauder and Otto W. Nuttli},
  journal={Bulletin of the Seismological Society of America},
  year={1970}
}
  • W. Stauder, O. Nuttli
  • Published 1 June 1970
  • Geology
  • Bulletin of the Seismological Society of America
The largest earthquake to occur in the central Mississippi seismic region this century took place in south central Illinois on November 9, 1968. The hypocenter and origin time based on observations from twelve regional stations varying in epicentral distance from 171 to 549 km, are 37.95°N, 88.48°W, h = 25 km, 0 = 17h01m42.0s ± 0.2s. Travel times of P at stations distant less than 2600 km indicate regional mantle variations, corresponding to rays bottoming at depths down to 650 km. Beyond… 

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