000062064 001__ 62064
000062064 005__ 20180211181334.0
000062064 0247_ $$2DOI$$a10.2136/vzj2007.0139
000062064 0247_ $$2WOS$$aWOS:000256204600004
000062064 037__ $$aPreJuSER-62064
000062064 041__ $$aeng
000062064 082__ $$a550
000062064 084__ $$2WoS$$aEnvironmental Sciences
000062064 084__ $$2WoS$$aSoil Science
000062064 084__ $$2WoS$$aWater Resources
000062064 1001_ $$0P:(DE-Juel1)129472$$aHuisman, J. A.$$b0$$uFZJ
000062064 245__ $$aAccuracy of bulk electrical conductivity measurements with Time Domain Reflectometry
000062064 260__ $$aMadison, Wis.$$bSSSA$$c2008
000062064 300__ $$a426 - 433
000062064 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
000062064 3367_ $$2DataCite$$aOutput Types/Journal article
000062064 3367_ $$00$$2EndNote$$aJournal Article
000062064 3367_ $$2BibTeX$$aARTICLE
000062064 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000062064 3367_ $$2DRIVER$$aarticle
000062064 440_0 $$010301$$aVadose Zone Journal$$v7$$x1539-1663$$y2
000062064 500__ $$aRecord converted from VDB: 12.11.2012
000062064 520__ $$aAccurate determination of bulk electrical conductivity with time domain reflectometry (TDR) requires calibration or direct measurement of the probe constant and the cable resistance. The aims of this study were threefold. First, the accuracy of an analytical expression for the direct determination of the probe constant was evaluated for three TDR probe designs by comparing the analytical result with the probe constant obtained by calibration to TDR measurements in solutions with varying electrical conductivity. Second, the accuracy of direct measurement of cable resistance was compared with the accuracy that can be achieved by calibrating this resistance. The uncertainty in directly measured and calibrated probe and cable properties was determined in a Monte Carlo analysis. The results showed that the analytical expression for the probe constant and calibration of the probe constant do not provide significantly different estimates when the uncertainty in both approaches is considered; however, the uncertainty in the calibrated probe constants was lower than or similar to the uncertainty in the direct measurements. Directly measured and calibrated cable resistance differed, which was attributed to recording time issues. It was concluded that calibration of probe and cable parameters should be preferred over direct measurements to achieve accurate bulk electrical conductivity measurements. The final aim of this study was to quantify how the various sources of uncertainty identified in this study affect the accuracy of TDR bulk conductivity measurements. This uncertainty analysis showed that the accuracy of TDR ranges between 0.6 and 1.2% of the bulk electrical conductivity if the reflection coefficient varies between -0.75 and 0.75. Outside this range, the accuracy of the bulk electrical conductivity measurements made with TDR is lower.
000062064 536__ $$0G:(DE-Juel1)FUEK407$$2G:(DE-HGF)$$aTerrestrische Umwelt$$cP24$$x0
000062064 588__ $$aDataset connected to Web of Science
000062064 650_7 $$2WoSType$$aJ
000062064 7001_ $$0P:(DE-HGF)0$$aLin, C. P.$$b1
000062064 7001_ $$0P:(DE-Juel1)VDB17057$$aWeihermüller, L.$$b2$$uFZJ
000062064 7001_ $$0P:(DE-Juel1)129549$$aVereecken, H.$$b3$$uFZJ
000062064 773__ $$0PERI:(DE-600)2088189-7$$a10.2136/vzj2007.0139$$gVol. 7, p. 426 - 433$$p426 - 433$$q7<426 - 433$$tVadose zone journal$$v7$$x1539-1663$$y2008
000062064 8567_ $$uhttp://dx.doi.org/10.2136/vzj2007.0139
000062064 909CO $$ooai:juser.fz-juelich.de:62064$$pVDB
000062064 9131_ $$0G:(DE-Juel1)FUEK407$$bErde und Umwelt$$kP24$$lTerrestrische Umwelt$$vTerrestrische Umwelt$$x0
000062064 9141_ $$y2008
000062064 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000062064 9201_ $$0I:(DE-Juel1)VDB793$$d31.10.2010$$gICG$$kICG-4$$lAgrosphäre$$x1
000062064 9201_ $$0I:(DE-82)080011_20140620$$gJARA$$kJARA-ENERGY$$lJülich-Aachen Research Alliance - Energy$$x2
000062064 9201_ $$0I:(DE-Juel1)VDB1045$$gJARA$$kJARA-SIM$$lJülich-Aachen Research Alliance - Simulation Sciences$$x3
000062064 970__ $$aVDB:(DE-Juel1)98060
000062064 980__ $$aVDB
000062064 980__ $$aConvertedRecord
000062064 980__ $$ajournal
000062064 980__ $$aI:(DE-Juel1)IBG-3-20101118
000062064 980__ $$aI:(DE-82)080011_20140620
000062064 980__ $$aI:(DE-Juel1)VDB1045
000062064 980__ $$aUNRESTRICTED
000062064 981__ $$aI:(DE-Juel1)IBG-3-20101118
000062064 981__ $$aI:(DE-Juel1)VDB1045
000062064 981__ $$aI:(DE-Juel1)VDB1047