谐变垂直电偶极子在四分层媒质中的电磁波
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摘要
本文采用复电磁场的Ｈｅｒｔｚ势作柱面波展开的方法，导出了谐变垂直电偶极子在四分层媒质中激发的电磁波满足Ｍａｘｗｅｌｌ方程组的积分形式解。该结果对于探讨地震前兆电磁信息的传播问题有参考价值。
It is discussed in this article that a time-harmanic vertical electric dipole under the ground isassumed to be warning electromagnetic source before a seism , and the earth is considered to be three-lay-ered dissipative linear media, solving Maxwell's equations for field of the dipole by means of expandingHertz-vector potential into Fourier-Bessel integral , so integral-formal solutions of the electromagneticfield generated by the dipole are derived , respectively , in a four-layered region. It is considered probablethat these results are possessed of some reference merit for research of generation and propagation of warn-ing electromagnetic waves before a seism.
It is discussed in this article that a time-harmanic vertical electric dipole under the ground isassumed to be warning electromagnetic source before a seism , and the earth is considered to be three-lay-ered dissipative linear media, solving Maxwell's equations for field of the dipole by means of expandingHertz-vector potential into Fourier-Bessel integral , so integral-formal solutions of the electromagneticfield generated by the dipole are derived , respectively , in a four-layered region. It is considered probablethat these results are possessed of some reference merit for research of generation and propagation of warn-ing electromagnetic waves before a seism.
引文
1 King, R. W. P. . Electromagnetic field of a vertical dipole over an imperfectly conducting half-space, Ra-dio Science. 1990 , 25 (2) : 149 - 160
2 Stratton, J. A. . Electromagnetic Theory. New York: MeGraw-Hill. 1941
3宋文淼。并矢格林函数和电磁场的算子理论。合肥:中国科学技术大学出版社,1991。
4 Sommerfeld , A. . Propagation of waves in wireless telegraphy , Ann. Phy. , 1909 , 28 : 665-736
5 Banos , a. ,Dipole Radiation in the Presence of a Conducting Half-Space , New York : Pergamon , 1966
6 King, R. W. P. The electromagnetic field of a vertical dipole in the presence of a three-layered region , Ra-dio Science. 1994 , 29 ( 1 ) : 97 - 113
7关华平,刘桂萍,震前电磁辐射异常和地震关系研究,地震学报,1995,17(2):237-246
8M.A.萨多夫斯基主编,地震的电磁前兆:施良骐等译。北京:地震出版社,1989
9郝建国等。震前极低频电磁异常及其频谱特征.地震学报,1995,17(1) :81-88
10毕德显。电磁场理论。北京:电子工业出版社,1985
11 D.L.安德森著,地球的理论:关华平等译。北京:地震出版社,1993
12张宗燧。电动力学及狭义相对比。北京:科学出版社,1965
13 Smythe, W. R. , Static and Dynamic Electricity, New York: MeGraw-Hill. 1968
14郭敦仁。数学物理方程。北京:人民教育出版社,1965
15 Cavalvante, G. P. S. , Rogges, D. A. and Giarola,A. J. ,Analysis of electromagnetic wave propagationin multilayered media using dyadic Green's functions. Radio Science. . 1982 , 17 (3) : 503- 508
16罗耀煌,包德修,吴永汉。垂直电偶极子在三层媒质中激发的电磁场,云南大学学报(自然科学版)。1996, 18(3):209-215
2 Stratton, J. A. . Electromagnetic Theory. New York: MeGraw-Hill. 1941
3宋文淼。并矢格林函数和电磁场的算子理论。合肥:中国科学技术大学出版社,1991。
4 Sommerfeld , A. . Propagation of waves in wireless telegraphy , Ann. Phy. , 1909 , 28 : 665-736
5 Banos , a. ,Dipole Radiation in the Presence of a Conducting Half-Space , New York : Pergamon , 1966
6 King, R. W. P. The electromagnetic field of a vertical dipole in the presence of a three-layered region , Ra-dio Science. 1994 , 29 ( 1 ) : 97 - 113
7关华平,刘桂萍,震前电磁辐射异常和地震关系研究,地震学报,1995,17(2):237-246
8M.A.萨多夫斯基主编,地震的电磁前兆:施良骐等译。北京:地震出版社,1989
9郝建国等。震前极低频电磁异常及其频谱特征.地震学报,1995,17(1) :81-88
10毕德显。电磁场理论。北京:电子工业出版社,1985
11 D.L.安德森著,地球的理论:关华平等译。北京:地震出版社,1993
12张宗燧。电动力学及狭义相对比。北京:科学出版社,1965
13 Smythe, W. R. , Static and Dynamic Electricity, New York: MeGraw-Hill. 1968
14郭敦仁。数学物理方程。北京:人民教育出版社,1965
15 Cavalvante, G. P. S. , Rogges, D. A. and Giarola,A. J. ,Analysis of electromagnetic wave propagationin multilayered media using dyadic Green's functions. Radio Science. . 1982 , 17 (3) : 503- 508
16罗耀煌,包德修,吴永汉。垂直电偶极子在三层媒质中激发的电磁场,云南大学学报(自然科学版)。1996, 18(3):209-215
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