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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: New application of wavelets in magnetotelluric data processing: reducing impedance bias

Fig. 4

Sferic on \({E}_{x}\) and its decomposition in time–frequency space. MT site: Rittershoffen (see “Real data application” section). Time axis is the same as Fig. 3. a Comparison between a sferic (black line) and Cauchy wavelet (real part, red line). b Wavelet coefficients of the sferic shown in a while using the Cauchy wavelet. c Wavelet coefficients of the sferic shown in a while using the Morlet wavelet

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