Earth's Conductivity: Theory & Application

In summary, the conversation is about an application that uses the Earth's near perfect conductor properties for electric current. The URLs provided discuss the topic and various sources, including Rudenberg's paper, mention a figure of 0.05 Ω/km for the Earth's resistance. However, there is still a search for a theory that explains this near perfect conduction.
  • #1
FrankMak
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I have been examining literature related to charge redistribution at the Earth's surface and I found an application that treats the Earth as a near perfect conductor.

http://tdworld.com/ar/power_one_wire_enough/
www.stonepower.se/Images/SWER.pdf

The articles in the above URLs are discussing an active application of the Earth's near zero resistance to an electric current. It is a working application that can't be disputed, but I cannot find reference sources that identify the theory for the near perfect conduction.

Any sources for the Earth conduction theory?
 
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  • #2
Various authors/papers on SWER systems cite:

Rudenberg, R., "Fundamental Consideration on Ground Currents,"
Electrical Engineering, Vol. 64, January 1945, 1-13.

And typically refer to a figure of 0.05 Ω/km.
 
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FAQ: Earth's Conductivity: Theory & Application

What is Earth's conductivity?

Earth's conductivity refers to the ability of the Earth's materials, such as soil, rocks, and water, to conduct electricity. It is a measure of how easily electrons can move through these materials.

What factors affect Earth's conductivity?

The factors that affect Earth's conductivity include the composition and structure of the Earth's materials, temperature, moisture content, and the presence of minerals and impurities. Different materials have different levels of conductivity, with metals being highly conductive and insulators being non-conductive.

How is Earth's conductivity measured?

Earth's conductivity can be measured using a variety of techniques, including resistivity surveys, electromagnetic surveys, and ground penetrating radar. These methods involve sending electrical currents through the ground and measuring the resistance of the materials to the flow of electricity.

What is the importance of understanding Earth's conductivity?

Understanding Earth's conductivity is important in a variety of fields, such as geology, environmental science, and engineering. It can help us locate and map underground resources, such as minerals and water, and assess the health of soil and groundwater. It is also crucial in designing and maintaining electrical and communication systems that rely on the Earth's conductivity.

How is Earth's conductivity used in practical applications?

The knowledge of Earth's conductivity is used in a wide range of applications, including mineral exploration, groundwater mapping, soil and water quality assessments, and the design of electrical and communication systems. It also plays a role in geothermal energy production, where the Earth's conductivity is used to locate and assess the potential of underground heat sources.

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