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The Scientific World Journal
Volume 2013, Article ID 421762, 7 pages
http://dx.doi.org/10.1155/2013/421762
Research Article

Performance Evaluation of Volumetric Water Content and Relative Permittivity Models

1Department of Civil and Structural Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
2Department of Civil Engineering, Polytechnic Negeri Semarang, Jl. Prof. Soedarto, SH, Tembalang, Semarang 50275, Indonesia

Received 25 July 2013; Accepted 12 September 2013

Academic Editors: G. Ganjegunte and J. J. Wang

Copyright © 2013 Muhammad Mukhlisin and Almushfi Saputra. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In recent years many models have been proposed for measuring soil water content () based on the permittivity () value. Permittivity is one of the properties used to determine in measurements using the electromagnetic method. This method is widely used due to quite substantial differences in values of for air, soil, and water, as it allows the value to be measured accurately. The performance of six proposed models with one parameter (i.e., permittivity) and five proposed models with two or more parameters (i.e., permittivity, porosity, and dry bulk density of soil) is discussed and evaluated. Secondary data obtained from previous studies are used for comparison to calibrate and evaluate the models. The results show that the models with one parameter proposed by Roth et al. (1992) and Topp et al. (1980) have the greatest data errors, while for the model with two parameters, the model proposed by Malicki et al. (1996) agrees very well with the data compared with other models.