Fig. 6From: Seawater motion-induced electromagnetic noise reduction in marine magnetotelluric data using current metersShort-time fourier transform results of the five EM components and current speeds for 6 days at site QH-R10 in the Qiongdongnan area. 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 the current speed in cm/sBack to article page