Improving our understanding of hydraulic-electrical relations: a case study of the surficial aquifer in emirate abu dhabi

PreviousNext No AccessSymposium on the Application of Geophysics to Engineering and Environmental Problems 2016IMPROVING OUR UNDERSTANDING OF HYDRAULIC-ELECTRICAL RELATIONS: A CASE STUDY OF THE SURFICIAL AQUIFER IN EMIRATE ABU DHABIAuthors: Scott IkardWade KressScott IkardU.S. Geological SurveySearch for more papers by this author and Wade KressU.S. Geological SurveySearch for more papers by this authorhttps://doi.org/10.4133/SAGEEP.29-060 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Transmissivity is a bulk hydraulic property that can be correlated with bulk electrical properties of an aquifer. In aquifers that are electrically-resistive relative to adjacent layers in a horizontally stratified sequence, transmissivity has been shown to correlate with bulk transverse resistance. Conversely, in aquifers that are electrically-conductive relative to adjacent layers, transmissivity has been shown to correlate with bulk longitudinal conductance. In both cases, previous investigations have relied on small datasets (on average less than eight observations) that have yielded coefficients of determination (R2) that are typically in the range of 0.6 to 0.7 to substantiate these relations. Compared to previous investigations, this paper explores hydraulic-electrical relations using a much larger dataset. Geophysical data collected from 26 boreholes in Emirate Abu Dhabi, United Arab Emirates, are used to correlate transmissivity modeled from neutron porosity logs to the bulk electrical properties of the surficial aquifer that are computed from deep-induction logs. Transmissivity is found to be highly correlated with longitudinal conductance. An R2 value of 0.853 is obtained when electrical effects caused by variations in pore-fluid salinity are taken into consideration. Keywords: Groundwater, Borehole Geophysics, VES, Dar Zarrouk Parameters, TransmissivityPermalink: https://doi.org/10.4133/SAGEEP.29-060FiguresReferencesRelatedDetails Symposium on the Application of Geophysics to Engineering and Environmental Problems 2016ISSN (online):1554-8015Copyright: 2016 Pages: 647 publication data© 2016 Published in electronic format with permission by the Society of Exploration Geophysicists and Environment and Engineering Geophysical SocietyPublisher:Environmental & Engineering Geophysical Society HistoryPublished Online: 24 Mar 2016 CITATION INFORMATION Scott Ikard and Wade Kress, (2016), "IMPROVING OUR UNDERSTANDING OF HYDRAULIC-ELECTRICAL RELATIONS: A CASE STUDY OF THE SURFICIAL AQUIFER IN EMIRATE ABU DHABI," Symposium on the Application of Geophysics to Engineering and Environmental Problems Proceedings : 340-353. https://doi.org/10.4133/SAGEEP.29-060 Plain-Language Summary KeywordsGroundwaterBorehole GeophysicsVESDar Zarrouk ParametersTransmissivityPDF DownloadLoading ...