地球物理学进展 ›› 2018, Vol. 33 ›› Issue (2): 511-520.doi: 10.6038/pg2018BB0063

• 固体地球物理及空间物理学(大气、行星、地球动力学、重磁电及地震学、地热学) • 上一篇    下一篇

地震磁扰动分析方法研究进展

姚休义1(),冯志生2,*()   

  1. 1. 云南省地震局,昆明 650224
    2. 江苏省地震局,南京 210014
  • 收稿日期:2017-06-07 修回日期:2018-01-06 出版日期:2018-04-20 发布日期:2018-07-17
  • 通讯作者: 冯志生 E-mail:xiuyiyao@126.com;fengzs2001@sina.com
  • 基金资助:
    川滇国家地震监测预报实验场项目“三分量全波形采样地震电磁扰动观测技术验证研究”(2016CESE0102)

Review on the recent development of analysis methods on magnetic disturbance associated with earthquakes

Xiu-yi YAO1(),Zhi-sheng FENG2,*()   

  1. 1. Yunnan Earthquake Agency, Kunming 650224, China
    2. Jiangsu Earthquake Agency, Nanjing 6210014, China
  • Received:2017-06-07 Revised:2018-01-06 Online:2018-04-20 Published:2018-07-17
  • Contact: Zhi-sheng FENG E-mail:xiuyiyao@126.com;fengzs2001@sina.com

摘要:

地震孕育及发生过程中伴随着不同程度的电磁信号,有效的分析方法不仅能成功提取显著异常信号,而且能加深对震磁异常机理的理解.本文从地震电磁扰动机理出发,介绍了动电效应和微破裂机制两种最可能的震磁异常产生机理.此外,从方法原理、震例、重要进展三个方面重点介绍了极化法、主成分分析法、分形分析法和梯度定向法四种异常提取能力较强的分析方法在震磁关系研究中的应用,对各种方法的典型震例进行了总结,并对其展开了相关评述和应用展望.对地震地磁扰动研究具有一定的参考意义.

关键词: 地震前兆, 电磁异常, 分析方法, 综述

Abstract:

Geomagnetic signal associated with earthquakes was extracted through various analytical methods, but the generation mechanism of this signal associated with earthquakes is not sure. Therefore, we discuss 2 possible mechanisms named electrokinetic effect and microfracture effect and then compared 4 analytical methods(Polarization、PCA、Fractal analysis and Gradient method)to extract abnormal geomagnetic signal through arithmetic、earthquake cases study and important development in this paper. Finally, the suggestions and prospect was made. This review provides some references on the understanding and application progress of geomagnetic analysis associated with earthquakes in recent years.

Key words: seismic precursor, electromagnetic anomaly, analysis methods, review

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