Print Email Facebook Twitter A new empirical complex electrical resistivity model Title A new empirical complex electrical resistivity model Author Kavian, M. Slob, E.C. Mulder, W.A. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2012-04-11 Abstract Macroscopic measurements of electrical resistivity require frequency-dependent effective models that honor the microscopic effects observable in macroscopic measurements. Effective models based on microscopic physics exist alongside with empirical models. We adopted an empirical model approach to modify an existing physical model. This provided a description of electrical resistivity as a function of not only frequency, but also water saturation. We performed two-electrode laboratory measurements of the complex resistivity on a number of fine and medium-grained unconsolidated sand packs saturated with water of three different salinities. For frequencies between 0.1 and 1 MHz, the data were fitted with the new model and compared to fits with Archie’s law. Our model described the relaxation times and DC resistivity values as negative exponential functions with increasing water saturation. All data could be accurately described as a function of frequency and water saturation with nine parameters. To reference this document use: http://resolver.tudelft.nl/uuid:c1f3a182-aa46-4347-8160-77eb88ee4657 DOI https://doi.org/10.1190/GEO2011-0315.1 Publisher Society of Exploration Geophysicists ISSN 0016-8033 Source Geophysics, 77 (3), 2012 Part of collection Institutional Repository Document type journal article Rights (c) 2012 Society of Exploration Geophysicists Files PDF 282900.pdf 417.82 KB Close viewer /islandora/object/uuid:c1f3a182-aa46-4347-8160-77eb88ee4657/datastream/OBJ/view