000017432 001__ 17432
000017432 005__ 20180208201017.0
000017432 0247_ $$2DOI$$a10.1016/j.orggeochem.2011.03.020
000017432 0247_ $$2WOS$$aWOS:000295215300014
000017432 037__ $$aPreJuSER-17432
000017432 041__ $$aeng
000017432 082__ $$a540
000017432 084__ $$2WoS$$aGeochemistry & Geophysics
000017432 1001_ $$0P:(DE-HGF)0$$aJelinkova, V.$$b0
000017432 245__ $$aEffects of entrapped residual air bubbles on tracer transport in heterogeneous soil: Magnetic resonance imaging study
000017432 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2011
000017432 300__ $$a991 - 998
000017432 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
000017432 3367_ $$2DataCite$$aOutput Types/Journal article
000017432 3367_ $$00$$2EndNote$$aJournal Article
000017432 3367_ $$2BibTeX$$aARTICLE
000017432 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000017432 3367_ $$2DRIVER$$aarticle
000017432 440_0 $$04748$$aOrganic Geochemistry$$v42$$x0146-6380$$y8
000017432 500__ $$aThe research was supported by the Czech Science Foundation Project No. 103/08/1552, by MZP CR SP/2E7/229/07 and by the Grant Agency of the Czech Technical University in Prague, Grant No. SGS10/146/OHK1/2T/11. We thank our colleague Martina Sobotkova from CTU in Prague, for her help with the experiments and two anonymous reviewers who contributed helpful comments to this work.
000017432 520__ $$aMagnetic resonance imaging (MRI) was used to study the process of infiltration and solute transport in an undisturbed soil sample of coarse sandy loam. The sample was subjected to the recurrent ponded infiltration (RPI) experiment, which was carried out in order to assess the changes in the entrapped air volume and its impact on steady state flow rates and solute breakthrough. The main stages of the first and second experimental RPI runs were monitored using an MRI sequence that follows both water density and magnetic relaxation. In a steady state stage of each experimental run a nickel nitrate pulse was injected in order to visualize the solute breakthrough. Effluent from the sample was collected for chemical analysis and a breakthrough curve of the nickel was constructed. To obtain information about the soil structure and to reveal potential preferential pathways, the soil sample was scanned using computed tomography. The local nickel ion transport breakthrough was evaluated from MR images in a series of local observation points distributed along the selected preferential pathways.The preferential flow instability phenomenon with the emphasis on air bubble formation was shown by detecting a 60% decrease of the steady state infiltration rate. The detailed analyses of MRI measurements at observation points revealed air bubble formation, producing a flow rate decrease accompanied by redirection of nickel ion transport trajectories. By analyzing M0 maps it was found that the volumetric water content decrease was 2.2%. (C) 2011 Elsevier Ltd. All rights reserved.
000017432 536__ $$0G:(DE-Juel1)FUEK407$$2G:(DE-HGF)$$aTerrestrische Umwelt$$cP24$$x0
000017432 588__ $$aDataset connected to Web of Science
000017432 650_7 $$2WoSType$$aJ
000017432 7001_ $$0P:(DE-HGF)0$$aSnehota, M.$$b1
000017432 7001_ $$0P:(DE-Juel1)VDB1270$$aPohlmeier, A.$$b2$$uFZJ
000017432 7001_ $$0P:(DE-HGF)0$$aVan Dusschoten, D.$$b3
000017432 7001_ $$0P:(DE-HGF)0$$aCislerova, M.$$b4
000017432 773__ $$0PERI:(DE-600)2018075-5$$a10.1016/j.orggeochem.2011.03.020$$gp. 991 - 998$$p991 - 998$$q991 - 998$$tOrganic geochemistry$$x0146-6380$$y2011
000017432 8567_ $$uhttp://dx.doi.org/10.1016/j.orggeochem.2011.03.020
000017432 909CO $$ooai:juser.fz-juelich.de:17432$$pVDB
000017432 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
000017432 9141_ $$y2011
000017432 9131_ $$0G:(DE-Juel1)FUEK407$$aDE-HGF$$bErde und Umwelt$$kP24$$lTerrestrische Umwelt$$vTerrestrische Umwelt$$x0
000017432 9132_ $$0G:(DE-HGF)POF3-582$$1G:(DE-HGF)POF3-580$$2G:(DE-HGF)POF3-500$$aDE-HGF$$bKey Technologies$$lKey Technologies for the Bioeconomy$$vPlant Science$$x0
000017432 9201_ $$0I:(DE-Juel1)IBG-3-20101118$$gIBG$$kIBG-3$$lAgrosphäre$$x0
000017432 9201_ $$0I:(DE-Juel1)IBG-2-20101118$$gIBG$$kIBG-2$$lPflanzenwissenschaften$$x1
000017432 970__ $$aVDB:(DE-Juel1)131904
000017432 980__ $$aVDB
000017432 980__ $$aConvertedRecord
000017432 980__ $$ajournal
000017432 980__ $$aI:(DE-Juel1)IBG-3-20101118
000017432 980__ $$aI:(DE-Juel1)IBG-2-20101118
000017432 980__ $$aUNRESTRICTED
000017432 981__ $$aI:(DE-Juel1)IBG-2-20101118