- Ground conductivity
Ground conductivity refers to the
electrical conductivityof the subsurface of the earth.
Ground conductivity is an extremely important factor in determining the field strength and propagation of surface wave (ground wave) radio transmissions.
Low frequency(30-300 kHz) and medium frequency (300-3000 kHz) radio transmissions are particularly reliant on good ground conductivity as their primary propagation is by surface wave.
Ground conductivity is sometimes used in determining the efficiency of a
septic tank, using electromagnetic induction, so that contaminants do not reach the surface or nearby water supplies. [cite web
last = Taylor | first = Rick
coauthors = Lee, Doolittle
title = Ground conductivity survey of a septic system during and after failure
date = June 2003
url = http://link.aip.org/link/?LEEDFF/22/555/1
accessdate = 2008-02-10]
* [http://www.fcc.gov/mb/audio/m3 Ground conductivity maps in the United States] (provided by the
Federal Communications Commissionand includes large scale map)
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