Frequency-dependent moduli and corresponding dissipations for water (i.e. triangles)—and glycerine (i.e. dots)—saturated conditions of the Wilkeson specimen. The symbols indicate the laboratory data points, whereas the curves represent the optimal background + peak ESAS model fitted to the observed dispersion and dissipation behaviour. (a) Shear modulus and associated dissipation. (b) Young's modulus and associated dissipation. (c) Bulk modulus and associated dissipation inferred by combining the measured complex shear and Young's moduli. For panels (b) and (c), the dissipation inferred from the flexural oscillation data has been adjusted as explained in the text. The dashed lines labelled ‘ω*τ_P = 1’ denote the effective frequencies of the dissipation peak centres as modelled for P_d = 5 MPa.