L10-page11 - by naturally occurring or man-made magnetic...

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11 Sources of Noise in Data • Instrument noise • Cultural Features • Telluric Currents – naturally occurring earth currents. – Self potentials – generally caused by either geochemical reactions or greater than normal subsurface fluid flow. – Magnetotelluric Currents – Electromagnetically induced
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Unformatted text preview: by naturally occurring or man-made magnetic fields. In some cases, it may be unavoidable Sources of Noise in Data Geologic Noise Near surface variations : Can dominate response thus masking signature of deeper targets ....
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