Magnetic field induced by the core flow resulting from the radial components of libration given an outer stably stratified layer with N ₀ = 100, h = 0.1, r _C = 0.7, and r _ICB = 0.4 and assuming a conductive layer at the base of the mantle with c = 10⁻⁴ and ﹩c^{\prime} ={10}^{-4}﹩. (a) The rms value of the radial magnetic field b _r at the CMB as a function of the Ekman number in response to the m = 2 and −2 libration forcing. (b) Radial magnetic field at the core surface induced by the m = 2 forcing component for Ek = 10⁻¹⁰.