Singularity-free Green's function for EM sources embedded in a stratified medium

作     者：翁爱华 刘云鹤 殷长春 贾定宇 

作者机构：吉林大学地球探测科学与技术学院长春130026 中国地质科学院地球物理地球化学勘查研究院廊坊065000 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2016年第13卷第1期

页      面：25-36,217,218页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 0707[理学-海洋科学] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：supported by CNSF(Granted No.40874050) Chinese High Technology Project(Granted No.2011YQ05006010) 

主　　题：EM Marine EM Green's function stratified medium singularity 

摘      要：We present a method to unify the calculation of Green＇s functions for an electromagnetic（EM） transmitting source embedded in a homogeneous stratified medium.A virtual interface parallel to layer interfaces is introduced through the source *** potentials for Green＇s function are derived by decomposing the partial wave solutions to Helmholtz＇s equations into upward and downward within *** amplitudes of the potentials in each stratum are obtained recursively from the initial amplitudes at the source *** initial amplitudes are derived by coupling with the transmitting sources and following the discontinuity of the tangential electric and magnetic fields at the source *** the initial terms are related to the transmitting sources and thus need to be modified for different transmitters,whereas the kernel connected with the stratified media stays ***,the present method can be easily applied to EM transmitting sources with little *** application of the proposed method to the marine controlled-source electromagnetic method（MCSEM） demonstrates its simplicity and flexibility.