A simple and accurate model for attenuation and dispersion caused by squirt flow in isotropic porous rocks

A simple and accurate model for attenuation and dispersion caused by squirt flow in isotropic porous rocks Alkhimenkov, Yury; Quintal, Beatriz Seismic waves propagating in fluid-saturated porous rocks exhibit attenuation and velocity dispersion in a broad range of frequencies. At sonic and ultrasonic frequencies, the attenuation is predominantly caused by fluid flow in cracks and grain contacts, so-called squirt flow. This physical mechanism for attenuation also may be relevant at seismic freque