Fig. 6From: Separation of magnetotelluric signals based on refined composite multiscale dispersion entropy and orthogonal matching pursuitComparison of the apparent resistivity-phase curves of the measured MT site D37890; among them, curve 1 is the original data, curve 2 is the data filtered by the OMP-based overall method, curve 3 is the result derived from the fractal-entropy and clustering method, and curve 4 is the result derived from the proposed methodBack to article page