Electromagnetic Radiation Generated by Acoustic Excitation of Rock Samples

被引：12
|
作者：
Yavorovich, Lyudmila V. [1 ]
Bespalko, Anatolii A. [1 ]
Fedotov, Pavel I. [1 ]
Baksht, Rina B. [2 ]
机构：
[1] Natl Res Tomsk Polytech Univ, Inst Nondestruct Testing, Tomsk, Russia
[2] Russian Acad Sci, Siberian Branch, Inst High Current Elect, Tomsk, Russia
来源：
ACTA GEOPHYSICA | 2016年 / 64卷 / 05期
关键词：
rocks; electromagnetic radiation (EMR); skarn; magnetite ore; sandstone; artificial acoustic excitation; FAILURE; EMISSIONS; EARTHQUAKES; MASS;
D O I：
10.1515/acgeo-2016-0081
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
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.
引用
收藏
页码：1446 / 1461
页数：16
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