Electromagnetic data terrain correction method
An electromagnetic data and terrain correction technology, applied in the field of geophysical exploration, can solve problems such as poor results, limited number of data points, and differences, and achieve the effect of improving capacity and processing efficiency and improving results
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[0036] The following is an example of terrain correction for two-dimensional continuous magnetotelluric profiling (CEMP) data.
[0037] The specific method is as follows: firstly, geometrically and arithmetically average the upper branch apparent resistivity and phase curves of all measuring points on the CEMP measuring line to obtain an average apparent resistivity and average phase data, and then use the one-dimensional generalized inverse method to invert Or the one-dimensional continuum method inverts the average apparent resistivity and phase curve, and after inversion, the frequency-apparent resistivity relationship of the average curve is changed to the depth-resistivity relationship, so as to obtain the background layered resistivity of the corrected area model, and perform one-dimensional forward modeling on the model to obtain the apparent resistivity ρ lay (f, x) and phase Then, according to the relative elevation data of the survey points, the grid is divided in ...
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