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Experimental comparison of buried and elevated ELF transmitting antennas
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1973
Source: Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines, p. 162-167 -
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Description:During the last week in March and the first week in April, 1973, the Naval Underwater Systems Center measured the 76 Hz magnetic field strength (in Wisconsin and Texas) produced by both the elevated and (newly installed) buried Wisconsin Test Facility (WTF) north-south (NS) antennas. The principle result obtained from these measurements is that there is no measurable difference in performance between the WTF buried and elevated NS antennas.
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Personal Author:Lagace, Robert L.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:The attention of this group was focussed on four through-the-earth communication systems that are presently of high interest to the U.S. Bureau of Min...The perturbation of alternating electromagnetic fields by three-dimensional bodiesCitePersonal Author:Jones, F. W.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:The perturbation of alternating electromagnetic fields by three-dimensional structures is considered. The general model is that of a semi-infinite con...Personal Author:Adams, John W.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:The present status of the National Bureau of Standards program is that many magnetic tapes of analog data have been recorded in four major mines. Each...Personal Author:Franceschetti, Giorgio1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:Explicit expressions are presented for the input admittance and effective height of several buried metal antennas, namely: (i) prolate spheroidal; (ii...Objectives and constraints of through-the-earth electromagnetic communication systemsCitePersonal Author:Parkinson, Howard E.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:In 1969, new coal mine health and safety legislation was enacted in the United States. As a result of this legislation, the Department of Interior, Bu...Feasibility of a radiocommunication in mine galleries by means of a coaxial cable having a high coupling impedanceCitePersonal Author:Fontaine, J. ;Demoulin, B....1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:To realize a radiowave communication along mine galleries a few kilometers long without repeater, we show that it is possible to use a coaxial cable b...Personal Author:Evans, J. E. ;Griffiths, A. S.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:Noise processing experiments with ELF (3 to 300 Hz) atmospheric noise and signals in the 40 to 80 Hz range are described. The primary purpose of the e...Theory and experiments relating to electromagnetic fields of buried sources with consequences to communication and locationCitePersonal Author:Geyer, Richard G.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:One aspect of a program to improve the chances of survival following coal mine disasters is the development of a communications system which will allo...Personal Author:Farstad, Arnold J.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:The Location Group conversed in the Petroleum Room of the Green Center with the purpose of addressing the following list of topics in light of the Bur...Use of the zonal harmonic series for obtaining numerical solutions to electromagnetic boundary value problemsCitePersonal Author:Lewis, Richard L.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:This is a discussion of the application of the zonal harmonic series to problems involving dipole sources in the vicinity of spherical boundaries. The...A discussion on the three-dimensional boundary value problem for electromagnetic fieldsCitePersonal Author:Rankin, David1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:Three -dimensional boundary value problems are difficult to solve. Indeed, while the separation of the scalar wave equation can be effected in 11 diff...Personal Author:Emslie, Alfred G. ;Lagace, Robert L....1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:This paper is concerned with the theoretical study of UHF radio communication in coal mines, with particular reference to the rate of loss of signal s...Personal Author:Kanda, M. ;Adams, J.W.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:A system for measuring amplitude probability distributions (APDās) of electromagnetic noise in coal mines is described and typical APDās from an u...Personal Author:Hill, D. A. ;Wait, J. R.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:The feasibility of locating a buried vertical magnetic dipole source (horizontal loop) from surface measurements of the vertical and horizontal magnet...Electromagnetic survey method applicable to underground quarries; proceedings of thru-the-earth electromagnetics workshopCitePersonal Author:Gabillard, R. ;Dubus, J. P....1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:We present an electromagnetic method taken from the well known radiogoniometer that allows us to locate at the surface of the ground the vertical axis...Personal Author:Moffatt, David L.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:Considerable current interest is evident[l,2] in the use of transient electromagnetic methods for subsurface remote sensing. A transient method is dis...Personal Author:Howard, Allen Q., Jr.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:An approximate solution to the electromagnetic boundary value problem consisting of a horizontal cylindrical conductor buried in a lossy half-space an...Personal Author:Olsen, R. G. ;Farstad, A. J.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:The Coal Mine Health and Safety Act of 1969, passed by Congress in the wake of the disaster at Farmington, West Virginia, led to an extensive study by...Personal Author:Dolphin, Lambert ;Bollen, Robert...1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:An electromagnetic sounder developed for an archaeological application in Egypt has been successfully tested in a California dolomite mine. Chambers i...Personal Author:Bensema, W. D. ;Adams, J. W.1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of MinesDescription:A portable, multichannel battery-operated mine-permissible measurement system was developed to measure the rms magnetic-field noise spectrum in the fr...
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Personal Author:
Lagace, Robert L.
1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
Description:
The attention of this group was focussed on four through-the-earth communication systems that are presently of high interest to the U.S. Bureau of Min...
The perturbation of alternating electromagnetic fields by three-dimensional bodies
Cite
Personal Author:
Jones, F. W.
1973 | Proceedings of Thru-the-Earth Electromagnetics, August 15-17,1973, Colorado School of Mines
Description:
The perturbation of alternating electromagnetic fields by three-dimensional structures is considered. The general model is that of a semi-infinite con...
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