A profiling TDR probe for water content and electrical conductivity measurements of soils
(2010) In European Journal of Soil Science 61(6). p.1106-1112- Abstract
- Measurements of water content profiles are of great interest in hydrology and soil science. Time domain reflectometry (TDR) is a well-established method for water content measurements; however, most TDR probe designs are suitable for measurements in only a small soil volume. In this article, a 1-m long TDR profiling probe with five measurement sections is described. Unlike most other previous profiling probes, our probe allows for both dielectric permittivity (e) and electrical conductivity (sa) measurements. The accuracy of the e and sa measurements was excellent; the precision of the measurements was, however, significantly poorer than with a 0.20-m long standard three rod TDR probe. The new probe was installed in a field and... (More)
- Measurements of water content profiles are of great interest in hydrology and soil science. Time domain reflectometry (TDR) is a well-established method for water content measurements; however, most TDR probe designs are suitable for measurements in only a small soil volume. In this article, a 1-m long TDR profiling probe with five measurement sections is described. Unlike most other previous profiling probes, our probe allows for both dielectric permittivity (e) and electrical conductivity (sa) measurements. The accuracy of the e and sa measurements was excellent; the precision of the measurements was, however, significantly poorer than with a 0.20-m long standard three rod TDR probe. The new probe was installed in a field and successfully measured water content profiles during the growing season of 2009. During an infiltration experiment it was shown that because of its geometry, the profiling probe over-estimated the wetting-front velocity. At a 0.10-m depth, the over-estimation was almost 30%. The over-estimate will be less significant at greater depths. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1752214
- author
- Persson, Magnus LU and Dahlin, Torleif LU
- organization
- publishing date
- 2010
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Journal of Soil Science
- volume
- 61
- issue
- 6
- pages
- 1106 - 1112
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000284322200026
- scopus:78649542637
- ISSN
- 1365-2389
- DOI
- 10.1111/j.1365-2389.2010.01306.x
- language
- English
- LU publication?
- yes
- id
- 9bb0d2f8-250d-4a3d-b885-7a5d9c1960d9 (old id 1752214)
- date added to LUP
- 2016-04-01 10:31:57
- date last changed
- 2022-01-26 00:05:44
@article{9bb0d2f8-250d-4a3d-b885-7a5d9c1960d9,
abstract = {{Measurements of water content profiles are of great interest in hydrology and soil science. Time domain reflectometry (TDR) is a well-established method for water content measurements; however, most TDR probe designs are suitable for measurements in only a small soil volume. In this article, a 1-m long TDR profiling probe with five measurement sections is described. Unlike most other previous profiling probes, our probe allows for both dielectric permittivity (e) and electrical conductivity (sa) measurements. The accuracy of the e and sa measurements was excellent; the precision of the measurements was, however, significantly poorer than with a 0.20-m long standard three rod TDR probe. The new probe was installed in a field and successfully measured water content profiles during the growing season of 2009. During an infiltration experiment it was shown that because of its geometry, the profiling probe over-estimated the wetting-front velocity. At a 0.10-m depth, the over-estimation was almost 30%. The over-estimate will be less significant at greater depths.}},
author = {{Persson, Magnus and Dahlin, Torleif}},
issn = {{1365-2389}},
language = {{eng}},
number = {{6}},
pages = {{1106--1112}},
publisher = {{Wiley-Blackwell}},
series = {{European Journal of Soil Science}},
title = {{A profiling TDR probe for water content and electrical conductivity measurements of soils}},
url = {{https://lup.lub.lu.se/search/files/1924674/5147055.pdf}},
doi = {{10.1111/j.1365-2389.2010.01306.x}},
volume = {{61}},
year = {{2010}},
}