The Influence of Anisotropy on the Field of the Magnetic Dipole in a Conducting Medium

2003 ◽  
pp. 605-625
Author(s):  
A.A. Kaufman
Keyword(s):  
Magnetic Dipole ◽  
Conducting Medium

TRANSIENT ELECTROMAGNETIC PROPAGATION IN A CONDUCTING MEDIUM

Geophysics ◽  
1951 ◽  
Vol 16 (2) ◽  
pp. 213-221 ◽  
Author(s):  
James R. Wait
Keyword(s):  
Magnetic Dipole ◽  
Electric Fields ◽  
Electric Dipole ◽  
Laplace Transformation ◽  
Step Function ◽  
Conducting Medium ◽  
Infinite Length ◽  
Electromagnetic Propagation ◽  
Transient Electromagnetic

The transient electric fields will be calculated for several types of step function current sources embedded in a conducting medium. These will be developed by the aid of the Laplace Transformation. The types of source elements considered are the electric dipole, the magnetic dipole and the linear grounded current element of finite and infinite length.

Horizontal Magnetic Dipole Embedded in a Two-Layer Conducting Medium

1972 ◽  
Vol 50 (6) ◽  
pp. 607-616 ◽  
Author(s):  
V. Ramaswamy ◽  
H. W. Dosso ◽  
J. T. Weaver
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Electric Field ◽  
Magnetic Dipole ◽  
Low Frequency ◽  
Bottom Layer ◽  
Conducting Medium ◽  
Dimensionless Form ◽  
Electric And Magnetic Fields ◽  
The Magnetic Field

The solutions for low-frequency fields of a horizontal magnetic dipole embedded within a two-layer conductor are derived. For convenience, the solutions are expressed in dimensionless form. The amplitudes and phases of the electric and magnetic fields along the surface of the bottom layer are calculated numerically and their dependence on the ratio of the conductivities of the two layers is investigated. Results indicate that, in general, the electric field induced by a subsurface horizontal magnetic dipole is more sensitive to the bottom-layer conductivity than is the magnetic field. Some of the results discussed in this paper are of interest in studying the seabed conductivity.

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