Fig. 7From: CM6: a comprehensive geomagnetic field model derived from both CHAMP and Swarm satellite observationsThe \(R_n\) spectra of the time-averaged oceanic tidal magnetic field of \(M_2\) from CM5, CIY4, CM6, and G&O for SH degrees \(n = 1{-}28\) (top), of \(N_2\) from CM6 and G&O for SH degrees \(n = 1{-}12\) (lower left), and of \(O_1\) from CM6 and G&O for SH degrees \(n = 1{-}12\) (lower right), all at radius \(a = 6{,}371.2~\text {km}\)Back to article page