Seismo-electric exploration; Expected signal amplitudes. [Conversion of seismic to electromagnetic signal in geological media and detection of electric or magnetic signals]
- British Columbia Univ., Vancouver, BC (Canada). Dept. of Geophysics and Astronomy
- Div. of Natural Sciences, Trinity Western Univ., Langley, British Columbia V3A 6H4 (CA)
For more than 20 years, Soviet scientists have published papers and registered patents describing the conversion of seismic to electromagnetic energy in geological environments and the detection of the electric or magnetic signals as a method of geophysical exploration. Because of the potential importance of a reliable geophysical technique for locating quartz veins, the authors have been conducting extensive laboratory and field tests of the phenomena. For the purposes of designing appropriate field tests the approximate signal magnitudes must be known, but little has been published on them. The paper describes a simplified model from which order-of-magnitude estimates of expected electric and magnetic signal strengths can be made with sufficient accuracy for such purposes. For mathematical convenience the target is modeled as a homogeneous sphere in which the seismic input induces uniform, time-varying electric polarization. More realistic configurations can be described by linear superposition of the potentials of appropriate sub-elements.
- OSTI ID:
- 5648630
- Journal Information:
- Geophysical Prospecting; (USA), Vol. 39:1; ISSN 0016-8025
- Country of Publication:
- United States
- Language:
- English
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