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The measurement of the variation with depth of the hydraulic conductivity of saturated soil monoliths
Author(s) -
YOUNGS E.G.
Publication year - 1982
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1982.tb01742.x
Subject(s) - hydraulic conductivity , lysimeter , macropore , porosity , flow (mathematics) , soil science , geology , geotechnical engineering , base flow , conductivity , environmental science , soil water , hydrology (agriculture) , mechanics , chemistry , mesoporous material , drainage basin , biochemistry , cartography , geography , catalysis , physics
Summary Hydraulic conductivity profiles of saturated composite porous columns were obtained in two ways: first, from measurements of the hydraulic potential profiles with uniform vertical flow; and second, by making use of a potential theorem concerning the flow between sources and sinks, from measurements of the hydraulic potential difference between the ponded surface and the base when the flow was intercepted in turn by successive drains located at intervals down the column. Both techniques gave the same results. The hydraulic conductivity profile of a structurally unstable column changed significantly with time, suggesting that such measurements might be used to monitor soil structural changes and root development in lysimeter studies.