Evolution of positive and negative magnetic flux and magnetic energy for the two QSEBs of Fig. 7. The error bands in positive and negative fluxes are shown as thin-shaded regions along the curves. Panels (a) and (b) are for QSEB-A, which is located at the outer spine footpoint. Panels (c) and (d) are for QSEB-B, which is located in a dipole configuration. The yellow-shaded regions highlight the duration of the two QSEB events.