Electromagnetic Radiation Generated by Acoustic Excitation of Rock Samples

The paper presents an experiment on acoustic excitation of electromagnetic radiation (EMR) signals in skarn, sandstone, and magnetite ore samples. For the skarn and sandstone samples, the EMR signal amplitude was observed to decrease with increasing ultimate strength. Supposedly, this effect can be...

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Bibliographic Details
Published in:Acta geophysica 2016-10, Vol.64 (5), p.1446-1461
Main Authors: Yavorovich, Lyudmila V., Bespalko, Anatolii A., Fedotov, Pavel I., Baksht, Rina B.
Format: Article
Language:English
Subjects:
Acoustics
artificial acoustic excitation
Earth and Environmental Science
Earth Sciences
electromagnetic radiation (EMR)
Electromagnetics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
magnetite ore
Radiation
Rocks
sandstone
skarn
Structural Geology
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Summary:The paper presents an experiment on acoustic excitation of electromagnetic radiation (EMR) signals in skarn, sandstone, and magnetite ore samples. For the skarn and sandstone samples, the EMR signal amplitude was observed to decrease with increasing ultimate strength. Supposedly, this effect can be explained by assuming that EMR is generated when an acoustic wave propagates through an electrical double layer. The presence of piezoelectric inclusions ( e.g. , quartz) in the magnetite ore enhances the analog EMR signal and its spectral components.
ISSN:1895-6572
1895-7455
DOI:10.1515/acgeo-2016-0081