Temporal evolution of physical variables at x = 1.2, y = 0, z = 3.5 with symmetric excitation of QFPs at x_1,2 = ±2.0 (Case 1). The time is in units of τ_A = 11.9 s. (a) Velocity components V_x (solid), V_y (dashed), and V_z (dotted). (b) Perturbed magnetic field components ΔB_x (solid), ΔB_y (dashed), and ΔB_z (dotted). (c) Density (solid) and temperature (dashed) perturbations, Δρ and ΔT.