Simple sensors to achieve fine spatial resolution in continuous measurements of soil moisture and salinity
Küçük Resim Yok
Tarih
2002
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
European Geophysical Soc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
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 m(3) m(-3)) to saturation (0.55 m(3) m(-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.
Açıklama
27th General Meeting of the European-Geophysical-Society -- APR, 2002 -- NICE, FRANCE
Anahtar Kelimeler
Soil Moisture, Soil Salinity, Thermal-Conductivity Moisture Probe, Four-Electrode Salinity Probe, Electrical-Conductivity, Thermal-Properties
Kaynak
Hydrology And Earth System Sciences
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
6
Sayı
6
