Figure 4.
A vertical section through the separator reconnection process during zippette reconnection that is described in Figure 3. (a) Two flux regions 1-1 and 2-2 filling the space either side of a vertical separatrix surface (V). (b) Separator reconnection at two separators S1 and S2 transfers flux between 1-1, 2-2 and new flux regions 1-2, 2-1U and 2-1O. (c) The final state possesses a separator S1 and flux regions 1-2 and 2-1U in addition to the two initial regions.