DocumentCode
1034449
Title
Electromagnetic wave propagation in an asymmetrical coal seam
Author
Hill, David A.
Author_Institution
National Bureau of Standards, Boulder, CO, USA
Volume
34
Issue
2
fYear
1986
fDate
2/1/1986 12:00:00 AM
Firstpage
244
Lastpage
247
Abstract
Electromagnetic wave propagation in a coal seam is analyzed for the case where the surrounding floor and roof rocks have different electrical properties. Numerical results are presented for the attenuation rate and field distribution of the dominant mode. Even when the roof and floor conductivities are different, the vertical electric field and the horizontal magnetic field are the dominant components, and they are nearly constant within the coal seam. The results have application to mine communication and remote sensing of coal seams.
Keywords
Coal; Electromagnetic propagation in nonhomogeneous media; MF radio propagation; Underground electromagnetic propagation; Conductivity; Electromagnetic propagation; Equations; Floors; Geometry; Magnetic fields; Permittivity; Polarization; Propagation constant; Remote sensing;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/TAP.1986.1143809
Filename
1143809
Link To Document