The dynamic permeability is a useful concept that is important for
analyzing seismic data as a function of frequency. In those systems
where the intrinsic attenuation of the wave is caused in large part
by viscous losses due to the presence of fluids, the dynamic
permeability provides a convenient model of this behavior. Perhaps
surprising is the fact that most systems can be modeled with a nearly
universal function, depending only weakly on a scalar parameter *P*
whose range of variation has been shown to be quite small () for a very wide range of systems relevant to seismic exploration.

7/8/2003