Top row: Spatial distribution of $|\mathbf{J}|/|\mathbf{B}|$ (in arbitrary units in log scale) and the projected magnetic field lines (in red) in the x − y plane for (a) t = 5.44, (b) t = 7.51, and (c) 12.59 s obtained from simulation 1. The saturation level of the color bars were chosen for a better visualization of the CS structures. Bottom row: Panels (d), (e), and (f) are same as the corresponding top panels but for the |B_z| in logarithm scale, where the saturation level of the color bars were chosen for better visualization.