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- W4244260439 abstract "PreviousNext No AccessSymposium on the Application of Geophysics to Engineering and Environmental Problems 2008Geophysical Characterization of a Levee With DC Resistivity and Electromagnetic MeasurementsAuthors: Theodore H. AschMaryla Deszcz‐PanBethany BurtonLyndsay BallWade KressJoseph VrabelLewis E. HunterTheodore H. AschU.S. Geological SurveySearch for more papers by this author, Maryla Deszcz‐PanU.S. Geological SurveySearch for more papers by this author, Bethany BurtonU.S. Geological SurveySearch for more papers by this author, Lyndsay BallU.S. Geological SurveySearch for more papers by this author, Wade KressU.S. Geological SurveySearch for more papers by this author, Joseph VrabelU.S. Geological SurveySearch for more papers by this author, and Lewis E. HunterUS Army Corps of Engineers, Sacramento DistrictSearch for more papers by this authorhttps://doi.org/10.4133/1.2963315 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract A geophysical characterization of a portion of American River levees in Sacramento, California was conducted in May 2007. Targets of interest included sand lenses that underlay the levees and the depth to a clay unit that underlies the sand. The concern is that the erosion of these sand lenses can lead to levee failure in highly populated areas of Sacramento. DC resistivity and electromagnetic surveys were conducted over a 6 mile length of the levee on roads and bicycle and horse trails. 2‐D inversions were conducted on all the geophysical data. The OhmMapper and SuperSting surveys produced consistent inversion results that characterized the targets of interest. GEM‐2 apparent resistivity data were consistent with the DC inversion results. However, the GEM‐2 data could not be inverted due to large system drifts. While this would not be as large a problem in conductive terrains, it is a problem for a small induction number electromagnetic profiling system such as the GEM‐2 in a resistive terrain (the sand lenses). Despite issues with the GEM‐2 inversion, this geophysical investigation was successful in detection of the sand lenses and the depth to the clay zone of interest.Permalink: https://doi.org/10.4133/1.2963315FiguresReferencesRelatedDetailsCited By3D Geophysical Soil Profiling System for Supporting Countermeasure Design for Damaged River EmbankmentsToru Takahashi, Takao Aizawa, Hideki Nishio, and Toshifumi Matsuoka27 January 2014 Symposium on the Application of Geophysics to Engineering and Environmental Problems 2008ISSN (online):1554-8015Copyright: 2008 Pages: 1427 publication data© 2008 Copyright © 2008 The Environmental and Engineering Geophysical SocietyPublisher:Environmental & Engineering Geophysical Society HistoryPublished: 30 Sep 2008 CITATION INFORMATION Theodore H. Asch, Maryla Deszcz‐Pan, Bethany Burton, Lyndsay Ball, Wade Kress, Joseph Vrabel, and Lewis E. Hunter, (2008), Geophysical Characterization of a Levee With DC Resistivity and Electromagnetic Measurements, Symposium on the Application of Geophysics to Engineering and Environmental Problems Proceedings : 739-748. https://doi.org/10.4133/1.2963315 Plain-Language Summary PDF DownloadLoading ..." @default.
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- W4244260439 title "Geophysical Characterization of a Levee With DC Resistivity and Electromagnetic Measurements" @default.
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