Comment on ‘Piezoelectricity as a mechanism on generation of electromagnetic precursors before earthquakes’ by J.H. Wang
Comment on ‘Piezoelectricity as a mechanism on generation of electromagnetic precursors before earthquakes’ by J.H. Wang
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J.H Wang 对“压电作为地震前产生电磁前兆的机制”的评论
DOI：
10.1093/gji/ggab372
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发表时间：
2021
影响因子：
2.8
通讯作者：
Yamazaki Ken'ichi
中科院分区：
文献类型：
--
作者：
Yamazaki Ken'ichi;Yamazaki Ken'ichi
Wang（2021，以下简称JHW）最近从压电效应的角度研究了弹性电耦合（EEC），以评估产生震前电磁现象的可能性和必要条件，包括总电子含量（TEC）的变化。研究考虑了一维模型来模拟压电效应，并推导出位错与电场强度之间的定量关系。JHW的结论之一是，压电效应是产生先前报告的震前TEC异常的潜在机制。然而，JHW中的定量讨论包含一个严重的错误。JHW在推导位移和电场之间的定量关系时，在两种解决方案之间选择了一种不正确的模式，这随后导致对所产生的电场与位移之比的估计不正确。当采用正确的模式时，得到了与JHW相反的结论.
Wang (2021, hereafter JHW) recently investigated elastic–electric coupling (EEC) in terms of the piezoelectric effect to assess both the plausibility of and necessary conditions for generating pre-earthquake electromagnetic phenomena, including variations in the total electron content (TEC). The study considered a 1-D model to simulate the piezoelectric effect, and derived a quantitative relationship between the dislocation and intensity of the electric field. One of JHW's conclusions was that the piezoelectric effect is a potential mechanism for generating previously reported pre-earthquake TEC anomalies. However, the quantitative discussion in JHW contains a serious error. JHW had chosen an incorrect mode between the two solutions during the derivation of a quantitative relationship between the displacement and the electric field, which subsequently led to an incorrect estimation of the ratio of the generated electric field to the displacement. The opposite conclusion to that drawn by JHW is attained when a correct mode is used.