Vertical component of the alternative Lorentz force density changes (﹩\delta {s}_{z}^{\mathrm{ad}}﹩) at three different times during the eruption phase. The change in ﹩{s}_{z}^{\mathrm{ad}}﹩ is defined by the color code. Arrows and electric current density contours are the same as in Figure 4. The animation begins at ﹩t=164{t}_{A}﹩ and ends at ﹩t=244{t}_{A}﹩.

(An animation of this figure is available.)

The video/animation of this figure is available in the online journal.