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irina1246 [14]
3 years ago
13

A disadvantage of some geophysical techniques based on magnetism is that their use in urban areas may be subject to distortion r

esulting from power lines and metals in the immediate vicinity. One method that can be used in such areas relies on soil moisture and the ground's resistance to electricity and is known as___________.
Physics
1 answer:
julsineya [31]3 years ago
3 0

Answer:

Resistivity Method

Explanation:

A disadvantage of some geophysical techniques based on magnetism is that their use in urban areas may be subject to distortion resulting from power lines and metals in the immediate vicinity. One method that can be used in such areas relies on soil moisture and the ground's resistance to electricity and is known as Resistivity.

It is usually carried out by injecting a small electrical current through the earth and measured a subtle  sub-surface change in resistance over a given area.

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