| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Department of Soil, Water and Environmental Science, University of Arizona, Tucson, AZ
*Corresponding author (youngmh{at}ag.arizona.edu).
ABSTRACT
We propose an upward infiltration method to calibrate a time domain reflectometry (TDR) system. The method is rapid, allows the soil to remain unchanged during the experiment, and provides hundreds of data points. Three experiments were conducted using 18.7-cm-long probes in soils of three textures (nine experiments total). Calibrations also were performed by packing soil cores with soil at progressively higher water contents. The data from the two methods were fitted using regression techniques to two published models of the dielectric constant-water content relationship. The results show that the calibration curves of all three soils, fitted simultaneously to replicate experiments, were similar in shape and statistically the same. A single calibration curve, fitted simultaneously to the replicate experiments of the three soils, was compared with Topps equation and was statistically the same. The results support the conclusion that the upward infiltration method provides a fast and repeatable calibration method, consistent with conventional calibration.
Received for publication April 20, 1995.
This article has been cited by other articles:
|
|
 |
|
  M. S. Seyfried, L. E. Grant, E. Du, and K. Humes Dielectric Loss and Calibration of the Hydra Probe Soil Water Sensor Vadose Zone J., November 11, 2005; 4(4): 1070 - 1079. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Persson, D. Bendz, and P. Flyhammar Time-Domain Reflectometry Probe for Water Content and Electrical Conductivity Measurements in Saline Porous Media Vadose Zone J., November 1, 2004; 3(4): 1146 - 1151. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. S. Seyfried and M. D. Murdock Measurement of Soil Water Content with a 50-MHz Soil Dielectric Sensor Soil Sci. Soc. Am. J., March 1, 2004; 68(2): 394 - 403. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Y. Hamed, M. Persson, and R. Berndtsson Soil Solution Electrical Conductivity Measurements Using Different Dielectric Techniques Soil Sci. Soc. Am. J., July 1, 2003; 67(4): 1071 - 1078. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. Masbruch and T. P. A. Ferre A Time Domain Transmission Method for Determining the Dependence of the Dielectric Permittivity on Volumetric Water Content: An Application to Municipal Landfills Vadose Zone J., May 1, 2003; 2(2): 186 - 192. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Persson and S. Haridy Estimating Water Content from Electrical Conductivity Measurements with Short Time-Domain Reflectometry Probes Soil Sci. Soc. Am. J., March 1, 2003; 67(2): 478 - 482. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. C. Heathman, P. J. Starks, and M. A. Brown Time Domain Reflectometry Field Calibration in the Little Washita River Experimental Watershed Soil Sci. Soc. Am. J., January 1, 2003; 67(1): 52 - 61. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Persson, B. Sivakumar, R. Berndtsson, O. H. Jacobsen, and P. Schjonning Predicting the Dielectric Constant-Water Content Relationship Using Artificial Neural Networks Soil Sci. Soc. Am. J., September 1, 2002; 66(5): 1424 - 1429. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Nadler, S. R. Green, I. Vogeler, and B. E. Clothier Horizontal and Vertical TDR Measurements of Soil Water Content and Electrical Conductivity Soil Sci. Soc. Am. J., May 1, 2002; 66(3): 735 - 743. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H.H. Nissen, P. Moldrup, and R.G. Kachanoski Time Domain Reflectometry Measurements of Solute Transport across a Soil Layer Boundary Soil Sci. Soc. Am. J., January 1, 2000; 64(1): 62 - 74. [Abstract] [Full Text]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Agronomy Journal | Crop Science | |||
| Vadose Zone Journal | Journal of Plant Registrations | ||||
| Journal of Natural Resources and Life Sciences Education |
Journal of Environmental Quality |
||||
