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Anisotropy and depth-related heterogeneity of hydraulic conductivity in a bog peat. I:laboratory measurements

Beckwith, C. W. and Baird, A. J. and Heathwaite, A. L. (2003) Anisotropy and depth-related heterogeneity of hydraulic conductivity in a bog peat. I:laboratory measurements. Hydrological Processes, 17 (1). pp. 89-101. ISSN 0885-6087

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Abstract

Anisotropy and heterogeneity of hydraulic conductivity (K) are suspected of greatly affecting rates and patterns of ground-water seepage in peats. A new laboratory method, termed here the modified cube method, was used to measure horizontal and vertical hydraulic conductivity (Kh and Kv) of 400 samples of bog peat. The new method avoids many of the problems associated with existing field and laboratory methods, and is shown to give relatively precise measurements of K. In the majority of samples tested, Kh was much greater than Kv, indicating that the bog peat was strongly anisotropic. Log10Kh, log10Kv, and log10 (Kh/Kv) were found to vary significantly with depth, although none of the relationships was simple. We comment on the scale dependency of our measurements.

Item Type: Article
Journal or Publication Title: Hydrological Processes
Additional Information: Anisotropy and depth-related heterogeneity of hydraulic conductivity in a bog peat. I: laboratory measurements 10.1002/hyp.1116
Uncontrolled Keywords: bog peat ; hydraulic conductivity ; anisotropy ; heterogeneity ; modified cube method
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 49693
Deposited By: ep_importer_pure
Deposited On: 13 Sep 2011 11:27
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 19:31
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/49693

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