Abstract
AbstractThe in‐loop TEM field is a kind of vertex field propagating in a way of diffusion in the earth mainly. Plane‐wave of electromagnetic has the features of reflection and refraction during the propagation in the earth. In order to draw on the experience of well processed method of electromagnetic plane‐wave, we study equivalent transformation from TEM diffusion field sounding data to plane‐wave electromagnetic sounding data. An equivalent transformation relationship between time and frequency domains can be constructed after theoretical model forward calculation, curve comparison, error analysis and the theoretical discussion about the propagation of diffusion field and plane‐wave. Using this transformation, the diffusion field sounding data of TEM apparent resistivity can be quickly turned into the equivalent data of plane‐wave sounding data. The result lays the foundation for the further study of TEM pseudo‐seismic plane‐wave interpretation.
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