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No. 45: May-Jun 1986

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Electromagnetic Radiation From Stressed Rocks

Anomalous electromagnetic radiation has been detected prior to and during several recent earthquakes. T. Ogawa and his colleagues have surveyed these observations briefly and then repaired to the laboratory where they put rocks through the third degree. They concluded:

"It has been demonstrated by the sample rock experiments that the ordinary crustal rocks produced electricity when they were shocked or fractured and radiated EM waves in the frequency range of 10 Hz to 100 kHz. The electric dipole moment to radiate the EM waves was estimated to be 10-14 C m."

(Ogawa, Toshio, et al; "Electromagnetic Radiations from Rocks," Journal of Geophysical Research, 90:6245, 1985.)

Comment. What was not mentioned by Ogawa et al is that it is just this kind of seismoelectricity that may be responsible for many of the sightings of earthquake lights and maybe even some so-called UFOs. Se GLD8 in Lightning, Auroras, Nocturnal Lights. Ordering information here.

From Science Frontiers #45, MAY-JUN 1986. 1986-2000 William R. Corliss

Science Frontiers Sourcebook Project Reviewed in:


  • "A sourcebook of unexplained phenomena is therefore a valuable addition to a collection of scientific literature. William R. Corliss has provided this in the past with his source books of scientific anomalies in several subjects, and now he has provided it for astronomy. He has done an excellent job of collecting and editing a large amount of material, taken in part from scientific journals and in part from scientific reporting in the popular or semi-scientific press." -- "The Mysterious Universe: A Handbook of Astronomical Anomalies", reviwed by Thomas Gold, Cornell University, in Icarus, vol.41, 1980

  • "An interesting, systematic presentation of unusual weather [..] This book is recommended for a general audience" --"Corliss, William R., Tornados, Dark Days, Anomalous Precipitation, and Related Weather Phenomena, Sourcebook Project, 1983.", revieweed in Choice, September 1983
  • "..the science is necessarily somewhat speculative, but Corliss's symthesis is based on reputable sources." -- "Corliss, William R. (Compiler). Lightning, Auroras, Nocturnal Lights, and Related Luminous Phenomena" reviwed by Joseph M. Moran, Univ. of Wisconsin in Science Books and Films, Sep/Oct 1983

  • "Before opening the book, I set certain standards that a volume which treads into dangerous grounds grounds like this must meet. The author scrupulously met, or even exceeded those standards. Each phenomenon is exhaustively documented, with references to scientific journals [..] and extensive quotations" -- "Book Review: The moon and planets: a catalog of astronomical anomalies", The Sourcebook Project, 1985., Corliss, W. R., Journal of the Royal Astronomical Society of Canada, Vol. 81, no. 1 (1987), p. 24., 02/1987