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Isothermal and non-isothermal infiltration and deuterium transport: a case study in a soil column from a headwater catchment

SYSNO ASEP	0476339
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Isothermal and non-isothermal infiltration and deuterium transport: a case study in a soil column from a headwater catchment
Author(s)	Sobotková, M. (CZ) Sněhota, M. (CZ) Budínová, E. (CZ) Tesař, Miroslav (UH-J)_{ORCID, SAI, RID}
Source Title	Journal of Hydrology and Hydromechanics. - : Ústav pro hydromechaniku AV ČR, v. v. i.. - : Ústav hydrológie SAV - ISSN 0042-790X Roč. 65, č. 3 (2017), s. 234-243
Number of pages	10 s.
Publication form	Print - P
Language	eng - English
Country	SK - Slovakia
Keywords	isothermal infiltration ; non-isothermal infiltration ; column leaching ; breakthrough curve ; deuterium ; viscosity ; capillary trapping ; entrapped air ; permeability
Subject RIV	DA - Hydrology ; Limnology
OECD category	Environmental sciences (social aspects to be 5.7)
Institutional support	UH-J - RVO:67985874
UT WOS	000406362800004
EID SCOPUS	85026662446
DOI	10.1515/johh-2017-0029
Annotation	Isothermal and non-isothermal infiltration experiments with tracer breakthrough were carried out in the laboratory on one intact column (18.9 cm in diameter, 25 cm in height) of sandy loam soil. For the isothermal experiment, the temperature of the infiltrating water was 20°C to the initial temperature of the sample. For the two non-isothermal experiments water temperature was set at 8°C and 6°C, while the initial temperature of the sample was 22°C. The experiments were conducted under the same initial and boundary conditions. Pressure heads and temperatures were monitored in two depths (8.8 and 15.3 cm) inside the soil sample. Two additional temperature sensors monitored the entering and leaving temperatures of the water. Water drained freely through the perforated plate at the bottom of the sample by gravity and outflow was measured using a tipping bucket flowmeter. The permeability of the sample calculated for steady state stages of the experiment showed that the significant difference between water flow rates recorded during the two experiments could not only be justified by temperature induced changes of the water viscosity and density. The observed data points of the breakthrough curve were successfully fitted using the two-region physical non-equilibrium model. The results of the breakthrough curves showed similar asymmetric shapes under isothermal and non-isothermal conditions.
Workplace	Institute of Hydrodynamics
Contact	Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
Year of Publishing	2018

Number of the records: 1