Thermo–time domain reflectometry method: Advances in monitoring in situ soil bulk density

2020 ◽  
Vol 84 (5) ◽  
pp. 1354-1360
Author(s):  
Yili Lu ◽  
Xiaona Liu ◽  
Meng Zhang ◽  
Joshua Heitman ◽  
Robert Horton ◽  
...  
Keyword(s):  
Bulk Density ◽  
Time Domain ◽  
Soil Bulk Density ◽  
Time Domain Reflectometry

Thermo–Time Domain Reflectometry Method: Advances in Monitoring In Situ Soil Bulk Density

2017 ◽  
Vol 2 (1) ◽  
pp. 0 ◽  
Author(s):  
Yili Lu ◽  
Xiaona Liu ◽  
Meng Zhang ◽  
Joshua Heitman ◽  
Robert Horton ◽  
...  
Keyword(s):  
Bulk Density ◽  
Time Domain ◽  
Soil Bulk Density ◽  
Time Domain Reflectometry

scholarly journals Summary of Thermo-Time Domain Reflectometry Method: Advances in Monitoring In Situ Soil Bulk Density

2018 ◽  
Vol 82 (4) ◽  
pp. 733-733
Author(s):  
Yili Lu ◽  
Xiaona Liu ◽  
Meng Zhang ◽  
Joshua Heitman ◽  
Robert Horton ◽  
...  
Keyword(s):  
Bulk Density ◽  
Time Domain ◽  
Soil Bulk Density ◽  
Time Domain Reflectometry

Improved thermo-time domain reflectometry method for continuous in-situ determination of soil bulk density

2018 ◽  
Vol 178 ◽  
pp. 118-129 ◽  
Author(s):  
Zhengchao Tian ◽  
Yili Lu ◽  
Tusheng Ren ◽  
Robert Horton ◽  
Joshua L. Heitman
Keyword(s):  
Bulk Density ◽  
Time Domain ◽  
Soil Bulk Density ◽  
Time Domain Reflectometry

Measurement of Soil Bulk Density and Water Content with Time Domain Reflectometry: Algorithm Implementation and Method Analysis

2021 ◽  
pp. 126389
Author(s):  
Marco Bittelli ◽  
Fausto Tomei ◽  
Anbazhagan P. ◽  
Raghuveer Rao Pallapati ◽  
Puskar Mahajan ◽  
...  
Keyword(s):  
Water Content ◽  
Bulk Density ◽  
Time Domain ◽  
Soil Bulk Density ◽  
Time Domain Reflectometry ◽  
Algorithm Implementation ◽  
Method Analysis

Determining Soil Bulk Density with Thermo-Time Domain Reflectometry: A Thermal Conductivity-Based Approach

2016 ◽  
Vol 80 (1) ◽  
pp. 48-54 ◽  
Author(s):  
Yili Lu ◽  
Xiaona Liu ◽  
Joshua Heitman ◽  
Robert Horton ◽  
Tusheng Ren
Keyword(s):  
Thermal Conductivity ◽  
Bulk Density ◽  
Time Domain ◽  
Soil Bulk Density ◽  
Time Domain Reflectometry

Determination of Soil Bulk Density with Thermo-Time Domain Reflectometry Sensors

2008 ◽  
Vol 72 (4) ◽  
pp. 1000-1005 ◽  
Author(s):  
Xiaona Liu ◽  
Tusheng Ren ◽  
Robert Horton
Keyword(s):  
Bulk Density ◽  
Time Domain ◽  
Soil Bulk Density ◽  
Time Domain Reflectometry

Root influences on soil bulk density measurements with thermo-time domain reflectometry

Geoderma ◽  
2021 ◽  
Vol 403 ◽  
pp. 115195
Author(s):  
Yongwei Fu ◽  
Yili Lu ◽  
Joshua Heitman ◽  
Tusheng Ren
Keyword(s):  
Bulk Density ◽  
Time Domain ◽  
Soil Bulk Density ◽  
Time Domain Reflectometry ◽  
Density Measurements

Measuring transient solute transport through the vadoze zone using time domain reflectometry

Soil Research ◽  
2001 ◽  
Vol 39 (6) ◽  
pp. 1359 ◽  
Author(s):  
I. Vogeler ◽  
S. Green ◽  
A. Nadler ◽  
C. Duwig
Keyword(s):  
Electrical Conductivity ◽  
Solute Transport ◽  
Time Domain ◽  
Deterministic Model ◽  
Soil Surface ◽  
Time Domain Reflectometry ◽  
Richards Equation ◽  
Electrical Conductivities ◽  
Destructive Measurement

Time domain reflectometry (TDR) was used to monitor the transport of conservative tracers in the field under transient water flow in a controlled experiment under a kiwifruit vine. A mixed pulse of chloride and bromide was applied to the soil surface of a 16 m2 plot that had been isolated from the surrounding orchard soil. The movement of this solute pulse was monitored by TDR. A total of 63 TDR probes were installed into the plot for daily measurements of both the volumetric water content (θ) and the bulk soil electrical conductivity (σa). These TDR-measured σa were converted into pore water electrical conductivities (σw) and solute concentrations using various θ–σa–σw relationships that were established in the laboratory on repacked soil. The depth-wise field TDR measurements were compared with destructive measurement of the solute concentrations at the end of the experiment. These results were also compared with predictions using a deterministic model of water and solute transport based on Richards’ equation, and the convection–dispersion equation. TDR was found to give a good indication of the shape of the solute profile with depth, but the concentration of solute was under- or over-estimated by up to 50%, depending on the θ–σa–σw relationships used. Thus TDR can be used to monitor in situ transport of contaminants. However, only rough estimates of the electrical conductivity of the soil solution can so far be obtained by TDR.

Sign in / Sign up

Export Citation Format

Share Document