Electromagnetic radiations from rocks
Electromagnetic radiations from rocks
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DOI：
10.1029/jd090id04p06245
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发表时间：
1985-06
影响因子：
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通讯作者：
T. Ogawa;K. Oike;T. Miura
中科院分区：
文献类型：
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作者：
T. Ogawa;K. Oike;T. Miura
为了测试电磁波从岩石中发射的可能性，人们进行了一些实验来测量电场，这些实验主要使用花岗岩样品，这些样品被撞击在一起，或者被锤子或重物撞击，并被弯曲力矩破碎。电信号的宽带（10 Hz至100 kHz）波形被数字记录。已经观察到大约四种信号：30 kHz、5 kHz、10 Hz以及间歇脉冲。利用这些电场的测量，产生的平均电偶极矩估计为10−14 C m。产生这样的偶极矩的可能性进行了讨论，在接触起电（或分离起电）和压电起电，并显示这两种可能性。
To test the possibility of the emission of electromagnetic waves from rocks, experiments have been made to measure the electric field by using mainly granite samples that were struck together or struck by a hammer or a weight and were fractured by a bending moment. The wide-band (10 Hz to 100 kHz) waveforms of electric signals were digitally recorded. Roughly four kinds of signals have been observed: 30 kHz, 5 kHz, 10 Hz and, in addition, intermittent pulses. Using these measurements of the electric fields, the average electric dipole moment generated was estimated to be 10−14 C m. The possibilities of producing such a dipole moment are discussed in terms of contact electrification (or separating electrification) and piezoelectrification, and both possibilities are shown.