O. Lazaromancilla et E. Gomeztrevino, SYNTHETIC RADARGRAMS FROM ELECTRICAL-CONDUCTIVITY AND MAGNETIC-PERMEABILITY VARIATIONS, Journal of applied geophysics, 34(4), 1996, pp. 283-290
Citations number
5
Categorie Soggetti
Geosciences, Interdisciplinary","Mining & Mineral Processing
The objective of this work is to assess the importance of electrical c
onductivity and magnetic permeability variations in ground penetrating
radar (GPR) reflections commonly interpreted only in terms of permitt
ivity variations. We use the matrix propagator approach to obtain the
surface electric field associated with a horizontally layered model wh
ose three electromagnetic properties vary from layer to layer. The sol
ution is based on the plane wave boundary value problem using inverse
Fourier transformation to accommodate particular GPR pulses. Our resul
ts indicate that while magnetic permeability is unimportant, reflectio
ns from electrical conductivity variations can be of the same order as
those associated with electrical permittivity boundaries. In particul
ar, we show that a realistic ground model composed of thin conductive
layers can produce radargrams similar to those caused by a lossless pe
rmittivity contrast.