DOI: 10.5194/hess-21-2263-2017
Scopus记录号: 2-s2.0-85018961808
论文题名: Hydraulic and transport parameter assessment using column infiltration experiments
作者: Younes A ; , Mara T ; , Fahs M ; , Grunberger O ; , Ackerer P
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 5 起始页码: 2263
结束页码: 2275
语种: 英语
Scopus关键词: Hydraulic conductivity
; Infiltration
; Markov processes
; Soil pollution
; Soils
; Water content
; Water injection
; Water pollution
; Longitudinal dispersivity
; Markov chain Monte Carlo
; Outlet concentration
; Posterior uncertainties
; Residual water content
; Saturated hydraulic conductivity
; Solute concentrations
; Statistical calibration
; Parameter estimation
; calibration
; dispersivity
; hydraulic property
; hydraulics
; infiltration
; Markov chain
; Monte Carlo analysis
; outflow
; parameter estimation
; soil column
; water content
; water pollution
英文摘要: The quality of statistical calibration of hydraulic and transport soil properties is studied for infiltration experiments in which, over a given period, tracer-contaminated water is injected into an hypothetical column filled with a homogeneous soil. The saturated hydraulic conductivity, the saturated and residual water contents, the Mualem-van Genuchten shape parameters and the longitudinal dispersivity are estimated in a Bayesian framework using the Markov chain Monte Carlo (MCMC) sampler. The impact of the kind of measurement sets (water content, pressure inside the column, cumulative outflow and outlet solute concentration) and that of the solute injection duration is investigated by analyzing the calibrated model parameters and their confidence intervals for different scenarios. The results show that the injection period has a significant effect on the quality of the estimation, in particular, on the posterior uncertainty range of the parameters. All hydraulic and transport parameters of the investigated soil can be well estimated from the experiment using only the outlet concentration and cumulative outflow, which are measured non-intrusively. An improvement of the identifiability of the hydraulic parameters is observed when the pressure data from measurements taken inside the column are also considered in the inversion. © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79184
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: LHyGES, Université de Strasbourg, ENGEES, CNRS, 1 rue Blessig, Strasbourg, France; UMR LISAH, INRA-IRD-SupAgro, Montpellier, France; LMHE, Ecole Nationale D'Ingénieurs de Tunis, Tunis, Tunisia; Université de la Réunion, PIMENT, 15 Avenue René Cassin, BP 7151, Moufia, La Réunion, France
Recommended Citation:
Younes A,, Mara T,, Fahs M,et al. Hydraulic and transport parameter assessment using column infiltration experiments[J]. Hydrology and Earth System Sciences,2017-01-01,21(5)