Panels a–d: B and J_z for case 2a (multiple wavelengths λ₁ = 2.0, λ₂ = 16.0) at time t = 24, 40, 92 and 350τ_A. Panels e–f: corresponding energetics: magnetic energy (left panel) and kinetic energy (right panel). Case 2a uses the perturbations from cases 1c and 1d in tandem, resulting in different reconnection dynamics and energetics, such as the lack of formation of the central island as seen in Fig. 6.