The project goals are to: -Perform, for the first time, laboratory measurements of the seismic velocities and attenuation across the entire seismic band of frequencies on rocks that have been well characterized (work to be performed by CSM). - Provide, for the first time, detailed explanations and models (both analytical and numerical) for the lab measurements that can be used to relate the material properties of interest to the oil industry to the seismic measures (work to be performed by Lawrence Berkeley National Laboratory, or LBNL). -Invert field data to obtain frequency-dependent attenuation and dispersion properties and relate such field measurements to the underlying rock properties of interest (work to be performed by the University of California at Berkeley and LBNL).