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| Titel |
Simple sensors to achieve fine spatial resolution in continuous measurements of soil moisture and salinity |
| VerfasserIn |
F. Konukcu, J. W. Gowing, D. A. Rose |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 6, no. 6 ; Nr. 6, no. 6, S.1043-1051 |
| Datensatznummer |
250003861
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| Publikation (Nr.) |
 copernicus.org/hess-6-1043-2002.pdf |
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| Zusammenfassung |
| 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.
Keywords: soil moisture, soil salinity, thermal-conductivity moisture probe,
four-electrode salinity probe |
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