A Hydrologic-geophysical Method for Characterizing Flow and Transport Processes Within The Vadose Zone
- Jim
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.
- Research Organization:
- University of Wisconsin-Madison (US)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- FG07-99ER15014
- OSTI ID:
- 820952
- Report Number(s):
- DOE/ER/15014; EMSP 70267; TRN: US0400566
- Resource Relation:
- Other Information: PBD: 22 Jan 2004
- Country of Publication:
- United States
- Language:
- English
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A Hydrologic-Geophysical Method for Characterizing Flow and Transport Processes within the Vadose Zone
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