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Thesis (M.S.)—University of Nebraska—Lincoln, 1962. Department of Agricultural Engineering.


Copyright 1962, the author. Used by permission.


This study has been conducted to determine the attenuating and distorting effects of an agricultural soil on an alternating magnetic field that was propagated through the soil from a buried, current-carrying wire.The direction and maximum intensity of magnetic fields generated by buried, current-carrying wires were measured about a Sharpsburg silty clay loam. The wires used for this study were buried to a depth of two feet or less. The alternating magnetic fields studied had a frequency of

20 kilocycles per second.

A series of laboratory experiments was conducted as a part of this study to determine the effects of a highly conductive layer on the alternating magnetic field propagated from a current carrying wire.Sheets of aluminum alloy were placed between a current-carrying wire and the points at which the direction and maximum intensity of alternating magnetic fields were measured.

A layer of highly conductive materials above a current- carrying wire causes attenuation and distortion of the magnetic field above the conducting material.The electrical conductivity of the Sharpsburg silty clay loam soil used for this study had negligible effects on the alternating magnetic fields that were propagated from wires buried beneath the surface of the soil.

Advisor: G. W. Steinbruegge