Method of forecasting seismic activity responsive to earth curre

Details Method of forecasting seismic activity responsive to earth curre Method of forecasting seismic activity responsive to earth curre

1982-01-18

1986-09-16

Karlsen, Ernest F.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

Using electrode arrays, circuits, structure, or supports

G01V 308

Patent

active

046125060

ABSTRACT:
A method of forecasting earthquakes as a function of transient variations in electric earth currents and apparatus for practicing such method. Transient variations in earth currents are detected from electrodes buried in the earth and portions of the transient variations within preselected frequency ranges are selected. The amplitude of such portions are then compared to predetermined standards for predicting magnitude, location and/or time of occurrence of an impendent earthquake.

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patent: 3496768 (1970-02-01), Boucher
patent: 4300135 (1981-11-01), Korn et al.
Coe, "Earthquake Prediction Program in the People's Republic of China", Trans. Amer. Geophysical Union, 52, p. 942 (1971).
Rikitake et al., "Precursory and Coseismic Changes in Ground Resistivity", Earthquake Prediction, Center for Academic Publications, Japan (1978), pp. 161-173.
Sobolev, "Application of Electric Method to the Tentative Short-Term Forecast of Kamchatka Earthquakes", Pageophysics, 113, pp. 226-235 (1975).

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