Note on: ‘EMDPLER: A F77 program for modeling the EM response of dipolar sources over the non-magnetic layer earth models’ by N.P. Singh and T. Mogi, Computers & Geosciences 36 (2010) 430-440

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• 作者：Majid Jamie^a ; ^{majidjamie@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; ^{mjamie@ut.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Saeid Mirzaei^a ; Mahmoud Mirzaei^b
• 关键词：EMDPLER ; EMDPLER_Corr ; Algorithm ; Mistakes ; Forward modeling ; EM wave ; Reflection coefficients ; Layer earth ; Intrinsic impedance ; Phase ; Normalized phase
• 刊名：Computers & Geosciences
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：98
• 期：Complete
• 页码：94-106
• 全文大小：4373 K

文摘

In this paper some mistakes arising in Singh and Mogi (2010) that are: (1) wrong formulation of the intrinsic impedance of the layers of an N-layered earth (Z_i) and reflection coefficient of the EM wave in TM-mode (r_TM), (2) using wrong and the very same algorithms for computing reflection coefficients of the EM wave in both the TE- and the TM-mode (r_TE and r_TM) and (3) using flawed algorithms for computing phase and normalized phase values, relating to electric and magnetic components of the EM wave, are noted and corrected form of these mistakes are presented. Moreover, in order to illustrate how these mistakes can affect forward modeling results different two- and three-layered earth models, the same as the models used in Singh and Mogi (2010), are chosen; afterwards EMDPLER and corrected version of this program, presented in this paper titled "EMDPLER_Corr", are conducted on these models and real and imaginary parts of H_z and H_y components of the magnetic field intensity, their normalized amplitudes (science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0098300416301881&_mathId=si0019.gif&_user=111111111&_pii=S0098300416301881&_rdoc=1&_issn=00983004&md5=60e298c2e10a6f77fc1a960d362a0015" title="Click to view the MathML source">|H_z/H_z0|$|{\text{H}}_{\text{z}}/{\text{H}}_{{\text{z}}_0}|$ and science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0098300416301881&_mathId=si0020.gif&_user=111111111&_pii=S0098300416301881&_rdoc=1&_issn=00983004&md5=7b310e4edef2879c7830bc1a78381132" title="Click to view the MathML source">|H_y/H_y0|$|{\text{H}}_{\text{y}}/{\text{H}}_{{\text{y}}_0}|$) and the corresponding normalized phases are computed, plotted versus frequency and compared with each other.