Portal de Periódicos da CAPES

Analytical model for a polarizable medium at radio and lower frequencies

1972; American Geophysical Union; Volume: 77; Issue: 26 Linguagem: Inglês

10.1029/jb077i026p04945

2156-2202

Carlos Alberto Dias,

Geophysical Methods and Applications

Journal of Geophysical Research (1896-1977)Volume 77, Issue 26 p. 4945-4956 Analytical model for a polarizable medium at radio and lower frequencies Carlos A. Dias, Carlos A. DiasSearch for more papers by this author Carlos A. Dias, Carlos A. DiasSearch for more papers by this author First published: 10 September 1972 https://doi.org/10.1029/JB077i026p04945Citations: 59AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract The Maxwell equations are written and discussed in the frequency domain for a medium exhibiting electrical polarization at radio and lower frequencies, in the range of linearity between current density and electric-field intensity. A complex function of frequency is proposed for the conductivity, which is able to describe all the families of available experimental curves for rock samples in the natural state, showing the effect of polarization. Such a function is a constitutive relation for the polarizable medium in the frequency domain. The concept of ‘abnormal’ dielectric constant for rocks is discussed in the context of the physical mechanisms responsible for the effect of electrical polarization at radio frequencies and below. Such a concept, always possible theoretically, only introduces confusion in the understanding of the basic physical mechanisms involved. As an alternative the extensive use of the concept of a total current complex conductivity is suggested. Citing Literature Volume77, Issue2610 September 1972Pages 4945-4956 RelatedInformation