K g ρ g K dry μ dry φ κ K f ρ f η f GPa g/cm 3 GPa GPa-Darcy GPa g/cm 3 cp Table 1. Input parameters and units for asymptotic solution. Here, K f is the bulk modulus of fluid, K g is the bulk modulus of solid grain, K dry is the dry rock bulk modulus, μ dry is the dry rock shear modulus, φ is porosity, ρ f is the fluid density, and ρ g is the grain density.