Radiowave propagation in a coal seam with inhomogeneous rock walls

Journal Article · Wed May 01 04:00:00 EDT 1991 · IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/36.79439· OSTI ID:5357968

Wait, J R

This paper reports on an idealized slab model of a horizontal coal seam. The strucuture is laterally uniform, but the media within a outside the slab are allowed to be inhomogeneous in the vertical direction. A general mode equation is obtained and simplifications are made to facilitate computation of the propagation constant of the dominant mode. Using an exponential variation of the rock conductivity, it is shown that the frequency dependence of the attenuation rate is strongest for a conductivity increasing with distance into the rock media.

• OSTI ID: 5357968
• Journal Information: IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Geoscience and Remote Sensing (Institute of Electrical and Electronics Engineers); (United States) Vol. 29:3; ISSN 0196-2892; ISSN IGRSD
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012010* -- Coal
Lignite
& Peat-- Mining-- Planning & Surveying-- (1987-)
COAL DEPOSITS
COAL MINES
COAL SEAMS
ELECTROMAGNETIC RADIATION
GEOLOGIC DEPOSITS
MINERAL RESOURCES
MINES
MINING
PLANNING
RADIATIONS
RADIOWAVE RADIATION
RESOURCES
SLABS
SURVEYS
UNDERGROUND FACILITIES
WAVE PROPAGATION