Acoustic wave propagation 1 Acoustics 1 Asymptotics 1 Biot models 1 Dynamic permeability Dynamics 1 Frequency regimes 1 Mathematical operators 1 Pore size 1 Poroelastic media 1 Porous materials 1 Porous medium 1 Single mode 1 Space-time representations 1 Temporal and spatial 1 Time domain 1 Time domain analysis 1 Wave equations 1 article human 1