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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Seawater motion-induced electromagnetic noise reduction in marine magnetotelluric data using current meters

Fig. 3

Results from the short-time Fourier transformation (STFT) analysis of 5 days worth of five EM components and current speeds from site SH-R11 in the Shenhu area. The subplots are the Ex, Ey, Ez, Hx, and Hy components. Colors indicate the power spectrum density of the EM components. Units of the color bar are in 20log10 (digital counts2 per Hz). The black line indicates current speeds in cm/s

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