搜索结果: 1-8 共查到“理学 Time-Domain Reflectometry”相关记录8条 . 查询时间(0.075 秒)
Solute Transport Measurements in Different Soil Types using Time Domain Reflectometry
Transport Measurements Soil Types Time Domain Reflectometry
2009/10/23
During recent years, time domain reflectometry (TDR) has proved to be a valuable tool for both water content (θ) and bulk electrical conductivity (σa) measurements. To allow resident solute concentrat...
Calibration of Time Domain Reflectometry for Water Content in Peat Soil
Time Domain Reflectometry Water Content Peat Soil
2009/10/22
Since peat soil differs from mineral soil in several respects, mineral-soil calibration
functions for time domain reflectometry (TDR) are not necessarily applicable.
This paper evaluates a number of...
Transect Scale Solute Transport Measured by Time Domain Reflectometry
Transect Scale Solute Transport Time Domain Reflectometry
2009/10/22
Two quasi steady-state solute transport experiments were carried out in a loamy
sand under field conditions. The flux was 40 mm/d in experiment 1 and 18.7
mm/d in experiment 2. Both water content (8...
Evaluation of rainfall infiltration characteristics in a volcanic ash soil by time domain reflectometry method
Time domain reflectometry rainfall intensity volcanic-ash soil
2009/6/8
Time domain reflectometry (TDR) was used to monitor soil water conditions and to evaluate infiltration characteristics associated with rainfall into a volcanic-ash soil (Hydric Hapludand) with a low ...
Extension of the measurement range of electrical conductivity by time-domain reflectometry (TDR)
electrical conductivity time-domain reflectometry
2009/6/8
The electrical conductivity (EC) of a medium invaded by TDR sensors can be estimated from the impedance of a TDR reflectogram. Four categories of sensor were tested in salt solutions and the impedance...
Analysis of soil water dynamics in an agroforestry system based on detailed soil water records from time-domain reflectometry
soil water dynamics time-domain reflectometry agroforestry system
2009/5/27
Time domain reflectometry [TDR] was used to investigate the spatial and temporal variation in surface soil water dynamics under a number of types of vegetation, including both trees and crops grown in...
Efficient reconstruction of dispersive dielectric profiles using time domain reflectometry (TDR)
time domain reflectometry dispersive dielectric profiles
2009/5/13
We present a numerical model for time domain reflectometry (TDR) signal propagation in dispersive dielectric materials. The numerical probe model is terminated with a parallel circuit, consisting of a...
Practical considerations on the use of down-sized time-domain reflectometry (TDR) probes
TDR probepulse travel time dielectric constant electrical conductivity
2009/3/17
Nine time-domain reflectometry (TDR) probes, 2 to 10 cm long, were evaluated by comparing their measurement accuracy of TDR-pulse travel time in a sand and sandy loam soil, and electrical conductivity...