Figure 6

Positions of four boundaries (black diamonds) relative to Auroras A, B, and C. The four boundaries are shown on the 630.0 nm images taken at (a) 08:26:52 and (b) 08:27:33 UT.
Positions of four boundaries (black diamonds) relative to Auroras A, B, and C. The four boundaries are shown on the 630.0 nm images taken at (a) 08:26:52 and (b) 08:27:33 UT.