Fig. 9
Longitudinal drifts (see legend) of the two minima and the saddle-point between them from the full period IGRF (symbols) and of the more recent epochs from Mag.num (lines)
Fig. 9 | Earth, Planets and Space
Longitudinal drifts (see legend) of the two minima and the saddle-point between them from the full period IGRF (symbols) and of the more recent epochs from Mag.num (lines)