Soil & Water Res., 2017, 12(1):10-17 | DOI: 10.17221/158/2015-SWR

Evaluations of the effects of soil properties and electrical conductivity on the water content reflectometer calibration for landfill cover soilsOriginal Paper

Kyoungchul KIM*,1, Jaeuk SIM2, Tae-Hyung KIM3
1 R&D Institute, Kolon Global Corporation, Cheoin-gu, Yongin, Gyeonggi, Republic of Korea
2 Department of Civil and Environmental Engineering, Yonsei University, Seodaemun-gu, Seoul, Republic of Korea
3 Department of Civil Engineering, Korea Maritime and Ocean University, Yeongdo-gu, Busan, Republic of Korea$2

This study presents soil-moisture calibrations using low-frequency (15-40 MHz) time domain reflectometry (TDR) probe, referred to as water content reflectometer (WCR), for measuring the volumetric water content of landfill cover soils, developing calibrations for 28 different soils, and evaluating how WCR calibrations are affected by soil properties and electrical conductivity. A 150-mm-diameter PVC cell was used for the initial WCR calibration. Linear and polynomial calibrations were developed for each soil. Although the correlation coefficients (R2) for the polynomial calibration are slightly higher, the linear calibrations are accurate and pragmatic to use. The effects of soil electrical conductivity and index properties were investigated using the slopes of linear WCR calibrations. Soils with higher electrical conductivity had lower calibration slopes due to greater attenuation of the signal during transmission in the soil. Soils with higher electrical conductivity tended to have higher clay content, organic matter, liquid limit, and plasticity index. The effects of temperature and dry unit weight on WCR calibrations were assessed in clayey and silty soils. The sensor period was found to increase with the temperature and density increase, with greater sensitivity in fine-textured plastic soils. For typical variations in temperature, errors in volumetric water content on the order of 0.04 can be expected for wet soils and 0.01 for drier soils if temperature corrections are not applied. Errors on the order of 0.03 (clays) and 0.01 (silts) can be expected for typical variations in dry unit weight (± 2 kN/m3).

Keywords: soil electrical conductivity; soil index properties; time domain reflectometry; volumetric water content; WCR calibration

Published: March 31, 2017  Show citation

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KIM K, SIM J, KIM T. Evaluations of the effects of soil properties and electrical conductivity on the water content reflectometer calibration for landfill cover soils. Soil & Water Res. 2017;12(1):10-17. doi: 10.17221/158/2015-SWR.
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    References

    1. Anderson S.H., Udawatta R.P., Seobi T., Garrett H.E. (2009): Soil water content and infiltration in agroforestry buffer strips. Agroforestry Systems, 75: 5-16. Go to original source...
    2. Arsoy S., Ozgur M., Keskin E., Yilmaz C. (2013): Enhancing TDR based water content measuriements by ANN in sandy soils. Geoderma, 195-196: 133-144. Go to original source...
    3. Campbell G., Anderson R. (1998): Evaluation of simple transmission line oscillators for soil moisture measurement. Computers and Electronics in Agricultures, 20: 31-34. Go to original source...
    4. Chandler D.G., Seyfried M., Murdock M., McNamara J.P. (2004): Field calibration of water content reflectometers. Soil Science Society of America Journal, 68: 1501-1507. Go to original source...
    5. Coppola A., Dragonetti G., Comegna A., Lamaddalena N., Caushi B., Haikal M.A., Basile A. (2013): Measuring and modeling water content in stony soils. Soil & Tillage Research, 128: 9-22. Go to original source...
    6. CSI (1996): CS615 Water Content Reflectometer: Service Manual. Logan, Campbell Scientific, Inc.
    7. Fan J., Scheuermann A., Guyot A., Baumgartl T., Lockington D. (2015): Quantifying spatiotemporal dynamics of root-zone soil water in a mixed forest on subtropical coastal sand dune using surface ERT and spatial TDR. Journal of Hydrology, 523: 475-488. Go to original source...
    8. Francesca V., Osvaldo F., Stefano P., Paola R. P. (2010): Soil moisture measurement: Comparison of instrumentation performance. Journal of Irrigation and Drainage Engineering, 136: 81-89. Go to original source...
    9. Jones S., Wraith J., Or D. (2002): Time domain reflectometry measurement principles and applications. Hydrological Process, 16: 141-153. Go to original source...
    10. Kelleners T.J., Seyfried M.S., Blonquist J.M. Jr., Bilskie J., Chandler D.G. (2005): Improved interpretation of water content reflectometer measurements in soils. Soil Science Society of America Journal, 69: 1684-1690. Go to original source...
    11. Kim K.C., Benson C. (2002): Water Content Reflectometer Calibration for Final Cover Soils. Geo-Engineering Report No 02-12, Madison, University of Wisconsin-Madison.
    12. Kim K.C., Hwang K.H., Lee S. (2005): A study on the measurement of volumetric water content using WCR in final cover layer of landfill. Journal of the Korean Geotechnical Society, 21: 147-154. (in Korean)
    13. Liu Q., Shalaby A. (2013): Volumetric moisture content analysis and the implementation of spring load restriction of low volume road. In: Al-Qadi I.L., Murrell S. (eds): Conf. Proc. Airfield and Highway Pavement 2013, Los Angeles, June 9-12, 2013: 1316-1327. Go to original source...
    14. Munoz-Carpena R. (2012): Field Devices for Monitoring Soil Water Content. Agricultural and Biological Engineering Department, University of Florida, BUL343. Available at http://edis.ifas.edu
    15. Or D., Wraith J.M. (1999): Temperature effects on soil bulk dielectric permittivity measure by time domain reflectometry: a physical mode. Water Resource Research, 35: 371-383. Go to original source...
    16. Orton T.L. (2002): Development of a test cell to evaluate embankment infiltration. In: WM'02 Conference, Tucson, Feb 24-28, 2002.
    17. Quinones H., Rielle P., Nemeth I. (2003): Comparison of three calibration procedures for TDR soil moisture sensors. Irrigation and Drainage, 52: 203-217. Go to original source...
    18. Reder A., Rianna G., Pagano L. (2014): Calibration of TDRs and heat dissipation probes in pyroclastic soils. Procedia Earth and Planetary Science, 9: 171-179. Go to original source...
    19. Seyfried M.S., Murdock M.D. (2001): Response of a new soil water sensor to variable soil, water content, and temperature. Soil Science Society of America Journal, 65: 28-34. Go to original source...
    20. Seyfried M.S., Murdock M.D. (2004): Measurement of soil water content with a 50-MHz soil dielectric sensor. Soil Science Society of America Journal, 68: 394-403. Go to original source...
    21. Skierucha W., Wilczek A., Alokhina O. (2008): Calibration of a TDR probe for low soil water content measurements. Sensors and Actuators A, 147: 544-552. Go to original source...
    22. Stander E.K., Rowe A.A., Borst M., O'Connor T.P. (2013): Novel use of time domain reflectometry in infiltrationbased low impact development practices. Journal of Irrigation and Drainage Engineering, 139: 625-634. Go to original source...
    23. Stangl R., Buchan G.D., Loiskandl W. (2009): Field use and calibration of a TDR-based probe for monitoring water content in a high-clay landslide soil in Austria. Geoderma, 150: 23-31. Go to original source...
    24. Stenger R., Barkle G., Burgess C. (2005): Laboratory calibration of water content reflectometers in their in situ verification. Soil Research, 43: 607-615. Go to original source...
    25. Sotelo M., Mazari M., Garibay J., Nazarian S. (2014): Variability of moisture content measurement devices on subgrade soils. In: Proc. Geo-Congress 2014, Atlanta, Feb 23-26, 2014: Technical Paper, GSP 234: 1425-1432. Go to original source...
    26. Topp G.C., Yanuka M., Zebchuk W.D., Zegelin S.J. (1988): The determination of electrical conductivity using TDR: soil and water experiments in coaxial lines. Water Resources Research, 24: 945-952. Go to original source...
    27. Udawatta R.P., Anderson S.H., Motavalli P.P., Garrett H.E. (2011): Calibration of a water content reflectometer and soil water dynamics for an agroforestry practice. Agroforestry Systems, 82: 61-75. Go to original source...
    28. Visconti F., De Paz J.M., Martinez D., Molina M. (2014): Laboratory and field assessment of the capacitance sensors Decagon 10HS and 5TE for estimating the water content of irrigated soils. Agricultural Water Management, 132: 111-119. Go to original source...
    29. Walker J.P., Willgoose G.R., Kalma J.D. (2004): In situ measurement of soil moisture: A comparison of technics. Journal of Hydrology, 293: 85-99. Go to original source...
    30. Western A.W., Seyfried M.S. (2005): A calibration and temperature correction procedure for the water-content reflectometer. Hydrological Process, 19: 3785-3793. Go to original source...
    31. Zegelin S., White I., Jenkins D. (1989): Improved field probes for soil water content and electrical conductivity measurement using time domain reflectometry. Water Resources Research, 25: 2367-2376. Go to original source...

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