Fields excited by earthquake ELF/SLF radiator on the ground and in the ionosphere
Fields excited by earthquake ELF/SLF radiator on the ground and in the ionosphere
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发表时间：
2009
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通讯作者：
Pan Wei-yan
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作者：
Pan Wei-yan
根据地震电磁辐射和传播规律，将地下辐射源理想化为水平ELF/SLF电偶极子，将环境介质理想化为包括岩石圈在内的平面层状介质，本文将岩石层和电离层视为均匀有耗介质，在此物理条件下，导出了大气层和电离层电磁场的积分表达式，并给出了计算结果模型，并利用留数定理导出了电磁场的级数表达式.结果表明，ELF/SLF电波从偶极子经最短的垂直路径进入大气，然后以几个波模之和的形式到达地-电离层波导中的接收点.进一步，当卫星向上延伸到电离层中时，它被卫星上的接收点接收。
Based on the earthquake electromagnetism radiation and propagation,the underground radiator is idealized as a horizontal ELF/SLF electric dipole and the environmental medium as a planar layered medium including the lithosphere,the atmosphere and the ionosphere.Both the lithosphere and the ionosphere are regarded as homogeneous lossy medium.The integral expressions of the electromagnetic field in the atmosphere and the ionosphere has been derived under this physical model.Furthermore,the series expressions of the electromagnetic field has been deduced with the help of the residue theorem.It is shown that the ELF/SLF electric wave penetrates into the atmosphere from the dipole via the vertical route which is the shortest.Then it arrives at the receive point in the Earth-ionosphere guide in the form of the sum of several wave modes.Ulteriorly,it is received by the receive point on the satellite when it extends upward into the ionosphere.