Hydrogeological Property Estimation Using Tomographic Data at the Boise Hydrgeophysical Resarch Site

摘要

Crosswell seismic and radar data were acquired at the Boise Hydrogeophysical Research Site (BHRS) as part of an effort to characterize the hydrological property distribution in a heterogeneous alluvial aquifer. The dielectric constant and amplitude attenuation values obtained from inversion of the radar data, as well as the seismic P-wave velocity values obtained from inversion of the seismic data, reveal similar spatial patterns. Comparison of this tomographic information with coincident weilbore logs suggest that the geophysical attributes are sensitive to hydrogeological variations. Information obtained from the radar tomography data were used to produce 2-D, high- resolution images of porosity and electrical conductivity. Comparison of these images with coincident log data reveal that these estimates are reasonable and suggests that the tomography data will be useful at this site for delineating variations in hydrological parameters.