(a): Brunt profile decomposed into a smooth part, N(u), and a glitch part, δN(u). (b): Pulsation periods vs radial order, k (l = 1 g modes). (c): Comparison between FT(ΔP) and the derivative of FT(δP/P). (d): Period spacings, ΔP_k. (e): Relative period spacings, ΔP_k, with respect to the asymptotic value, Π_l. (f): Comparison of the Fourier spectrum of ΔP_k and the buoyancy glitch derivatives. (g): Deviations (perturbations) of pulsation period from asymptotic values, δP_k. (h): Relative perturbations of pulsation periods, δP_k/P_k. (i): Comparison of the Fourier spectrum of δP_k/P_k and the buoyancy glitch profile, δN/N. All plots are based on a middle-main-sequence (X_c = 0.4), M = 4.5 M_⊙ stellar model, and its dipole g modes.