【摘要】 本文将地震前兆电磁源看成谐变水平电偶极子，将地而以下视为两层有耗散的线性煤质，采用对赫兹矢量势作柱面波展开的方法求解麦克斯韦方程组，从而得出了地下水平电偶极子在各层媒质中激发的电磁场的积分形式解。更多还原

【Abstract】 It is presented in this paper that a time-barmanic horizontal electricdipole under the ground is assumed to be the warning electromagnetic source before aseism, and that the earth is considered to be two-layered dissipative linear medium. SolvingMaxwell’s equations by means of expanding Hertz-vector potential into Fourier-Bessel integral, the formal solutions of electromagnetic field generated a horizontal electric dipole arederived, respectively, in three-layered redion.更多还原