Fig. 6
From: The Mie representation for Mercury’s magnetospheric currents
Superposition of poloidal (orange) and toroidal (green) currents. A vanishing current density \(\underline{j}=0\) on the left side of the grey sphere (a) can equivalently be described as a superposition of non-vanishing poloidal and toroidal currents, so that \(\underline{j}_P+\underline{j}_T=0\) is valid locally (b). The currents can flow independently of each other in a certain spatial distance (c)