The electrical resistivity and seismic velocity distributions over a buried hillside have been obtained using non-invasive controlled experiments on coincident profiles and 2D image reconstructions. The optimal images are in structural agreement and allow the deduction of two opposite resistivity-velocity trends in the near-surface materials. For both trends, the resistivity (ρ) and p-wave velocity (Vp) are related in the form Log10 ρ = mLog10Vp + c with the respective constants m and c having different signs in unconsolidated and consolidated materials.
Using collocated seismic velocity and electrical resistivity field measurements, we demonstrate that the electrical and mechanical geophysical properties that are traditionally regarded as unrelated are actually correlated. We suggest that the relationship may have petrophysical significance. The original ideas and data are from first author. Co-authors assisted with data modelling. RAE_import_type : Journal article RAE_uoa_type : Earth Systems and Environmental Sciences
