Tidal torque between the Earth and the Moon corresponding to the coupled oceanic-solid response in two configurations: a global oceanic shell of thickness H = 4000 m (shown in red), and a hemispherical ocean with the same thickness, symmetric around the equator and bounded by longitudes λ = 0 and λ = π (in blue). Energy dissipation is quantified by the linear Rayleigh drag frequency σ_R. The logarithm of the torque is plotted as a function of the normalized frequency ω = (Ω − n_orb)/Ω₀, where the Earth’s spin rate varies with the tidal forcing frequency Ω = n_orb + σ/2 at fixed n_orb, and Ω₀ being the present spin rate of the Earth.