| EPSRC Reference: |
GR/M34010/01 |
| Title: |
NON-INVASIVE CHARACTERISATION OF NAPL-CONTAMINATED LAND BY SPECTRAL INDUCED POLARISATION (SIP) TOMOGRAPHY |
| Principal Investigator: |
Ogilvy, Dr R |
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| Project Partners: |
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| Department: |
Fluid Processes Group |
| Organisation: |
British Geological Survey |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
30 March 1999 |
Ends: |
30 September 2002 |
Value (£): |
221,610
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| EPSRC Research Topic Classifications: |
| Assess/Remediate Contamination |
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| EPSRC Industrial Sector Classifications: |
| Environment |
No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Non-Aqueous Phase Liquids (NAPLs) such as chlorinated solvents, coal-tars and hydrocarbons are a group of common soil and groundwater contaminants that pose unique problems for detection by non-invasive geophysical techniques. NAPLs are sparingly soluble and invariably occur as capillary trapped residuals in the pore-space. Recent research shows that Spectral Induced Polarisation (SIP) Tomography has the potential to detect and image NAPL distributions in the shallow subsurface. SIP measurements the frequency dependence of rock electrical properties in the bandwidth mHz - kHz and different phase spectra can be expected when NAPLs interact with pore-mineral surfaces. The project aims to investigate the complex geoelectric properties of NAPL contaminated Triassic sandstone rocks; to simulate NAPL migration in porous and fractured media using tank experiments; to develop new 2.5D mathematical algorithms for the inversion and reconstruction of SIP images over the full frequency range; and to undertake field tests in controlled environments to validate the laboratory, tank and theoretical predictions. The EA will provide strategic guidance. Our industrial partners (BG, ICI and Shell) will provide test sites, geochemical control and ground-truth.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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