水平电偶极子在三层媒质中激发的电磁场特征的数值研究

英文篇名：Study of Numerical Value of the Electro-magnetic Field Feature Excitated in Three-layer Media by Horizontal Electric Dipole
中文刊名：地震研究
英文刊名：Journal of Seismological Research
作者：毛燕 ; 毛先进 ; 陈顺云 ; 王彬 ; 周光全
英文作者：Mao Yan 1 Mao Xianjin 1 Chen Shunyun 2 Wang Bin 1 Zhou Guangquan 1 (1.Seismological Bureau of Yunnan Province ; Kunming 650041 ; China) (2.Geology Institute of China Seismological Bureau ; Beijing 100029 ; China)
中文关键词：水平电偶极子 ; 电磁场解 ; 频谱特征
英文关键词：Horizontal electric dipole ; solution of electro-magnetic field ; spectra characteristics
出版日期：2003-10-23
机构：云南省地震局,云南省地震局,中国地震局地质所,云南省地震局,云南省地震局昆明650041 ,昆明650041 ,北京100029 ,昆明650041 ,昆明650041
年：2003
期：04
出版单位：地震研究

摘要

将空气及地面以下两层视为三层有耗散的线性媒质 ,求出第三层中的水平偶极子激发的电磁场在地表处的积分形式解 ,进行数值计算 ,分析其频谱特征。结果表明电磁辐射异常的优势频率为 0～ 2Hz,与实际观测资料相吻合 ,在超低频或甚低频 ,有比较明显的电磁场异常。并讨论其对地震电磁辐射监测的指导意义。
In this paper,the air and the underground media are taken as three-layer linear media with dissipation and the integral solution of electro-magnetic field on the surface excited by horizontal electric dipole in the third layer is got.So,the numerical value is calculated and the spectra features are andlyzed,The results show that the preponderant frepuency of the electro-magnetic radiation anomaly is from 0Hz to 2Hz,which is corresponding to the actually observed data.There are more obvious anomalies of electro-magnetic fields for the ultra-low frequency and very low frequency.Further,the leading significance to the electro-magnetic radiation monitoring is discussed.

引文

[1]熊皓.震前电磁辐射场的理论计算[A].国家地震局科技监测司.震前电磁波观测与实验研究文集[C].北京:地震出版社,1989.182-187.
    [2]陈智勇,杜晓泉,陶如谦,等.电磁辐射与地震[M].北京:地震出版社,1998.
    [3]毕德显.电磁场理论[M].北京:电子工业出版社,1985.320-334.
    [4]罗耀煌,包德修,赵政鸿,等.水平电偶极子在三层媒质中激发的电磁场[J].云南师范大学学报,1996,16(1):34-42.
    [5]傅良魁.应用地球物理教程-电法放射性地热[M].北京:地质出版社,1991.
    [6]袁家治,高桥耕三,钱书清,等.ULF和VLF地震电磁辐射的观测与研究[J].地震学报,1996,18(2):272-275.