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An Integral Equation Representation of Wide-Band Electromagnetic Scattering By Thin Sheets

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Abstract:An efficient, accurate numerical modeling scheme has been developed, based on the integral equation solution to compute electromagnetic (EM) responses of thin sheets over a wide frequency band. The thin-sheet approach is useful for simulating the EM response of a fracture system in the earth. The focus of this development has been the accuracy of the numerical solution over a wide-band frequency range of up to 100 MHz. The effect of displacement currents is included to correctly evaluate high-frequency EM scattering

Currently, EM responses of two thin sheets with different geometrical and electrical properties embedded in a three-layer earth can be modeled over a frequency band of IO-' to IO' Hz. The layered earth and the sheets can be electrically dispersive, an important feature that allows analysis of frequency-dependent characteristics of the model under investigation. The source field can be generated by a remote or local electric or magnetic dipole located on the surface or in a borehole. A plane-wave source can also be used, and numerical analyses have been made for magnetotellurics and the high-frequency impedance method.
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Citation:Song, Y., H. J. Kim, and K. H. Lee. An Integral Equation Representation of Wide-Band Electromagnetic Scattering By Thin Sheets. GEOPHYSICS 67(3):746-754, (2002).
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Contact: Chris Siebert - (702) 798-2234 or siebert.christopher@epa.gov
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Division: Environmental Sciences Division
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Branch: Characterization & Monitoring Branch
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Product Type: Journal
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Published: 06/03/2002
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Related Entries:
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Bullet Item Ground-Water Sampling and Geophysical Methods Development and Evaluation
spacer Relationship Reason:   A Project of the Product
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