| Autor: |
Peter Wilson, T. J. Kelleners, David A. Robinson, S. D. Logsdon, C.M.K. Gardner, J. D. Cooper, I. Lebron |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
Vadose Zone Journal. 4:992-1003 |
| ISSN: |
1539-1663 |
| Popis: |
Soils ranging in texture from sand to clay were used to compare permittivity measurements made using a Surface Capacitance Insertion Probe (SCIP) and time domain reflectometer (TDR). Measurements were made using the same electrodes embedded in each soil, making the measurements directly comparable. The objective of the work was to test a model describing the frequency response of the SCIP to both permittivity and electrode conductance, and to compare results with TDR and network analyzer measurements. The model was tested using liquids of known permittivity and in saline, dielectric solutions. Surface Capacitance Insertion Probe and TDR determined permittivity values are similar for sandy soils but diverge for loam and clay soils. Using Topp's values as a reference, the SCIP-determined permittivities for loams and clays lay close to the curve at water contents |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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