A Hydrologic-geophysical Method for Characterizing Flow and Transport Processes Within The Vadose Zone

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Description

The primary purpose of this project was to employ two geophysical imaging techniques, electrical resistivity tomography and cross-borehole ground penetrating radar, to image a controlled infiltration of a saline tracer under unsaturated flow conditions. The geophysical techniques have been correlated to other more traditional hydrologic measurements including neutron moisture measurements and induction conductivity logs. Images that resulted during two successive infiltrations indicate the development of what appear to be preferential pathways through the finer grained materials, although the results could also be produced by cationic capture of free ions in clays. In addition the site as well as the developing ... continued below

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Alumbaugh, David; LaBrecque, Douglas; Brainard, James & Yeh, T.C. (Jim) January 22, 2004.

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Description

The primary purpose of this project was to employ two geophysical imaging techniques, electrical resistivity tomography and cross-borehole ground penetrating radar, to image a controlled infiltration of a saline tracer under unsaturated flow conditions. The geophysical techniques have been correlated to other more traditional hydrologic measurements including neutron moisture measurements and induction conductivity logs. Images that resulted during two successive infiltrations indicate the development of what appear to be preferential pathways through the finer grained materials, although the results could also be produced by cationic capture of free ions in clays. In addition the site as well as the developing solute plume exhibits electrical anisotropy which is likely related to flow properties. However the geologic significance of this phenomenon is still under investigation.

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INIS; OSTI as DE00820952

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  • Other Information: PBD: 22 Jan 2004

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  • Report No.: DOE/ER/15014
  • Grant Number: FG07-99ER15014
  • DOI: 10.2172/820952 | External Link
  • Office of Scientific & Technical Information Report Number: 820952
  • Archival Resource Key: ark:/67531/metadc736664

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  • January 22, 2004

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  • Oct. 18, 2015, 6:40 p.m.

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  • Jan. 3, 2017, 12:42 p.m.

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Alumbaugh, David; LaBrecque, Douglas; Brainard, James & Yeh, T.C. (Jim). A Hydrologic-geophysical Method for Characterizing Flow and Transport Processes Within The Vadose Zone, report, January 22, 2004; United States. (digital.library.unt.edu/ark:/67531/metadc736664/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.