12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Flow pathways in porous media : electrical resi...
View graph of relations

« Back

Flow pathways in porous media : electrical resistance tomography and dye staining image verification.

Research output: Contribution to journalJournal article

Published

Journal publication date03/1996
JournalMeasurement Science and Technology
Journal number3
Volume7
Number of pages7
Pages384-390
Original languageEnglish

Abstract

Electrical resistance tomography permits the determination of the spatial distribution of electrical resistivity by non-destructive means. The technique may be applied to the study of flow through porous media by following the changes in resistivity distribution within a soil or rock core as an electrolytic tracer is passed through the specimen. Image reconstruction of the electrical resistance tomography data may be achieved by robust regularized nonlinear inverse methods provided data errors are suitably characterized. The procedure is reported here for a natural (undisturbed) soil core using four planes of 16 electrodes placed around the boundary of the core. The experiment was performed with a dye tracer that provided, by destructive slicing, visual verification of the flow pathways observed with the tomographic imaging.