Normalised energy transfer functions averaged over the time span of the kinematic phase and in space between z = −900 km and z = −700 km. Left: for the simulation dh12; centre: for the simulation dh6; and right: for the simulation dh6ν_Sη_H25. Solid colour curves represent sources of magnetic energy due to stretching (blue curves) and advection and compression (red curves) of magnetic fields, dashed colour curves represent magnetic energy losses due to advection and compression (yellow curves) and a Laplacian diffusion (purple curves) of magnetic fields. The green dashed curves represent the kinetic energy losses due to stretching of magnetic fields, whereas the light blue dotted lines represent the energy transfer imbalance −∂_tE_m + T_ms + T_ma. Black vertical lines denote the position of λ_ms (dashed), λ_kt (dotted), and λ_md (dash-dotted).