Browse by author
Lookup NU author(s): John Gowing
It is increasingly necessary to be able to measure, simultaneously, continuously and at fine spatial resolution, the salinity and water content of soil. This paper reports the design, construction, calibration and laboratory testing of two simple but robust instruments that enable this to be achieved. Salinity in solution was measured reliably, at 10-mm spacing, by multi-electrode resistivity probes up to saturation with NaCl (c. 6 mol l–1), though these probes required individual calibration and were unable to detect precipitated salt. Volumetric water content was measured with great sensitivity over a wide range, from air-dryness (0.06 m3m–3) to saturation (0.55 m3m–3) in a sandy loam, using thermal-conductivity probes that used a common calibration and were unaffected by the salinity of the soil solution, by temperature and by ageing.
Author(s): Konukcu F, Gowing JW, Rose DA
Publication type: Article
Publication status: Published
Journal: Hydrology and Earth System Sciences
Year: 2002
Volume: 6
Issue: 6
Pages: 1043-1051
Print publication date: 01/01/2002
Date deposited: 04/01/2008
ISSN (print): 1027-5606
ISSN (electronic): 1607-7938
Publisher: Copernicus
URL: .www.hydrol-earth-syst-sci.net/6/1043/2002/
