Basic Research on Three-Dimensional (3D) Electromagnetic (EM) Methods for Imaging the Flow of Organic Fluids in the Subsurface.
Abstract
Currently there are no systems available which allow for economical and accurate subsurface imaging of remediation sites. In some cases, high frequency ground penetrating radar (GPR) has been shown to be capable of accurately mapping the movement of contaminant plumes. Unfortunately, high frequency GPR has much too limited a depth of penetration in many soils to be useful for a large number of environmental problems. Lower frequencies are needed in order to obtain a reasonable depth of penetration. During this project, we conducted research on a prototype 8 MHz null field electromagnetic (EM) system to address this need. This project has been very successful in showing a promising new direction for high resolution subsurface imaging. Our tests with a prototype Electromagnetic Sensitive Null Array Probe (EM-SNAP) showed that we were able to obtain very sensitive measurements over subsurface dielectric targets. Although more basic research must be done, this approach holds great promise for imaging the flow of organic fluids in the subsurface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 30, 1997
- Accession Number
- ADA325662
Entities
People
- Ben K. Sternberg
- Steven L. Dvorak
Organizations
- University of Arizona