Radio Science · 1976 · 14 citations · 1 references
EngineeringEarth SciencesElectrical EngineeringElectromagneticsElectromagnetismPropagationElectrical ConductivityElectrical Properties Of RocksElectromagnetic WavesPropagation In ConductorsPropagation In Dielectric MediaTransmission LinesAttenuation EstimationCoal Seam StructureElectric Field AttenuationElectromagnetic Waves In Moving MediaHigh-frequency PropagationLow-frequency AttenuationWave ImpedanceWave Propagation In Conductors
A coal seam is idealized as a resistive slab bounded by more conductive rock. The source is taken to be a vertical electric dipole. It is shown that the dominant mode has relatively low attenuation.
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