Results of statistical analysis of low-frequency seismogenic EM emissions as precursors to earthquakes and volcanic eruptions

Details Results of statistical analysis of low-frequency seismogenic EM emissions as precursors to earthquakes and volcanic eruptions Results of statistical analysis of low-frequency seismogenic EM emissions as precursors to earthquakes and volcanic eruptions

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pepi...77...21y&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 77, Issue 1-2, p. 21-31.

Physics

4

Scientific paper

Since 1980, we have detected impulsive noise bursts of seismogenic emissions at 82 kHz, 1525 Hz and 36 Hz with a multipoint detection network around the Tokyo region and the Izu peninsula. In earlier times, this system has recorded EM signals prior to several earthquake events. And it has also recorded volcanic eruptions on 15 and 21 November 1986 at Mt. Mihara on Ohshima Island, on 12 July 1989 in Itoh Bay in the Izu peninsula region, and since June 1991 at Mt. Unzen on the Shimabara peninsula. To obtain a clear explanation of the source mechanism of these emissions, we are progressing with statistical analyses of these emission characteristics using the data of 29 events over the last 5 years.

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