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Effective wave tilt and surface impedance over a laterally inhomogeneous two‐layer Earth
Author(s) -
Hughes W. J.,
Wait J. R.
Publication year - 1975
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs010i011p01001
Subject(s) - tilt (camera) , crust , perturbation (astronomy) , electrical impedance , electromagnetic radiation , wave impedance , geophysics , physics , surface wave , earth (classical element) , plane wave , geology , optics , computational physics , geometry , mathematics , mathematical physics , quantum mechanics
Using a perturbation method, we consider the effect of a simple two‐dimensional model on the electromagnetic fields at the surface of the Earth for a postulated downcoming plane wave. We examine the calculated change in the surface impedance and wave tilt due to lateral inhomogeneities. It is found that the magnetic wave tilt ( H z / H x ) is most seriously affected by such anomalies. This may have important consequences on electromagnetic probing of nonuniform portions of the Earth's crust.