Profiles of 1D parameters along the slit (dashed lines in Fig. 8) crossing through the sunspot scar at t = 144 t_A (first column), t = 164 t_A (second column), and t = 184 t_A (third column) in “Simulation 1”. From the top to the bottom, they are squashing degree (logQ; panel a), total magnetic field strength (|B|; panel b), horizontal magnetic field strength (B_h; panel b), vertical magnetic field strength (B_z; panel b), inclination angle (panel c), total current density (|J|; panel d), and vertical current density (J_z; panel d). The red dashed line in each column marks the peak of logQ. The pink dashed lines in each column show the range of the QSL footprint (logQ ≥ 3). The black horizontal dashed line in panel d marks the value where the current density equals zero.