Haynes, H., Vignaga, E. and Holmes, W.M. (2009) Using magnetic resonance imaging for experimental analysis of fine-sediment infiltration into gravel beds. Sedimentology, 56(7), pp. 1961-1975. (doi: 10.1111/j.1365-3091.2009.01064.x)
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Abstract
Sedimentologists recognize that development of a fine-resolution, truly three-dimensional analytical tool is essential if the internal structure of an opaque material is to be examined. This paper therefore seeks to: (i) test the viability of magnetic resonance imaging for sedimentological research; and (ii) investigate fine-sediment infiltration into gravel beds. The results of six experiments are analysed quantitatively using ImageJ post-processing software. Data indicate that magnetic resonance imaging-based measurements of particle axes and volumes are comparable with standard laboratory techniques. Furthermore, the technique permits visualization and analysis of differences in the pattern of fine-sediment infiltration (median particle diameter, d) into a framework of gravel (median particle diameter, D). Data clearly illustrate a siltation process for samples of D/d = 34 and a sealing process for samples of D/d = 7 where the seal is restricted to a depth equal to 2D. This pore-scale visualization is valuable to the understanding of hydraulic–sediment–habitat interactions.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Holmes, Dr William and Haynes, Dr Heather and Vignaga, Miss Elisa |
Authors: | Haynes, H., Vignaga, E., and Holmes, W.M. |
Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences |
College/School: | College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience College of Science and Engineering > School of Engineering > Infrastructure and Environment |
Journal Name: | Sedimentology |
ISSN: | 0037-0746 |
ISSN (Online): | 1365-3091 |
Published Online: | 21 April 2009 |
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