Radio location of a trapped miner in an anisotropic coal field
Article first published online: 7 DEC 2012
Copyright 1975 by the American Geophysical Union.
Volume 10, Issue 4, pages 445–451, April 1975
How to Cite
1975), Radio location of a trapped miner in an anisotropic coal field, Radio Sci., 10(4), 445–451, doi:10.1029/RS010i004p00445., and (
- Issue published online: 7 DEC 2012
- Article first published online: 7 DEC 2012
- Manuscript Received: 17 NOV 1972
Low frequency communication from a trapped miner is idealized as the electromagnetic boundary value problem of two-layered anisotropic earth energized by a buried vertical electric dipole. The shale beds form the anisotropic cover for the coal swamp. Using numerical integration techniques the field structure has been investigated on the air-earth interface. Analysis reveals that conductivity-anisotropy modified the electromagnetic fields quite significantly and needs to be taken into account for the precise location of the source in emergency situations.