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Electromagnetic induction by finite wavenumber source fields in 2-D lateral heterogeneities - The transverse electric modeElectromagnetic induction in a laterally homogeneous earth is analyzed in terms of a source field with finite dimensions. Attention is focused on a time-varying two-dimensional current source directed parallel to the strike of a two-dimensional anomalous structure within the earth, i.e., the E-parallel mode. The spatially harmonic source field is expressed as discontinuities in the magnetic (or electric) field of the current in the source. The model is applied to describing the magnetic gradients across megatectonic features, and may be used to predict the magnetic fields encountered by a satellite orbiting above the ionosphere.
Document ID
19840057530
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hermance, J. F.
(Brown University Providence, RI, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: Geophysical Journal
Volume: 78
ISSN: 0016-8009
Subject Category
Geophysics
Accession Number
84A40317
Funding Number(s)
CONTRACT_GRANT: NAS5-26138
CONTRACT_GRANT: N00014-83-K-077
CONTRACT_GRANT: NSF EAR-79-11283
CONTRACT_GRANT: DE-AC02-79ER-10401
CONTRACT_GRANT: NSF EAR-80-18503
Distribution Limits
Public
Copyright
Other

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