Bayesian estimation of the hydraulic and solute transport properties of a small-scale unsaturated soil column

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Title:Bayesian estimation of the hydraulic and solute transport properties of a small-scale unsaturated soil column
Creators:
Moreira, Paulo H.S. ; DEM/PEM – Politécnica/COPPE, Federal University of Rio de Janeiro, UFRJ, Caixa Postal 68503, Cidade Universitária, Rio de Janeiro, 21941-972, Brazil.
van Genuchten , Martinus Th. ; DEM/PEM – Politécnica/COPPE, Federal University of Rio de Janeiro, UFRJ, Caixa Postal 68503, Cidade Universitária, Rio de Janeiro, 21941-972, Brazil.
Orlande, Helcio R. B.; helcio at mecanica dot coppe dot ufrj dot br; DEM/PEM – Politécnica/COPPE, Federal University of Rio de Janeiro, UFRJ, Caixa Postal 68503, Cidade Universitária, Rio de Janeiro, 21941-972, Brazil.
Cotta , Renato M. ; DEM/PEM – Politécnica/COPPE, Federal University of Rio de Janeiro, UFRJ, Caixa Postal 68503, Cidade Universitária, Rio de Janeiro, 21941-972, Brazil.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 64, 1, pp. 30-44
Uncontrolled Keywords:Markov Chain Monte Carlo method, Metropolis-Hastings algorithm, hydraulic parameters, transport parameters, soil column experiment

Abstract

In this study the hydraulic and solute transport properties of an unsaturated soil were estimated simultaneously from a relatively simple small-scale laboratory column infiltration/outflow experiment. As governing equations we used the Richards equation for variably saturated flow and a physical non-equilibrium dual-porosity type formulation for solute transport. A Bayesian parameter estimation approach was used in which the unknown parameters were estimated with the Markov Chain Monte Carlo (MCMC) method through implementation of the Metropolis-Hastings algorithm. Sensitivity coefficients were examined in order to determine the most meaningful measurements for identifying the unknown hydraulic and transport parameters. Results obtained using the measured pressure head and solute concentration data collected during the unsaturated soil column experiment revealed the robustness of the proposed approach.

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Title:Bayesian estimation of the hydraulic and solute transport properties of a small-scale unsaturated soil column
Translated title:Bayesian estimation of the hydraulic and solute transport properties of a small-scale unsaturated soil column
Creators:
Moreira, Paulo H.S. ; DEM/PEM – Politécnica/COPPE, Federal University of Rio de Janeiro, UFRJ, Caixa Postal 68503, Cidade Universitária, Rio de Janeiro, 21941-972, Brazil.
van Genuchten , Martinus Th. ; DEM/PEM – Politécnica/COPPE, Federal University of Rio de Janeiro, UFRJ, Caixa Postal 68503, Cidade Universitária, Rio de Janeiro, 21941-972, Brazil.
Orlande, Helcio R. B.; helcio at mecanica dot coppe dot ufrj dot br; DEM/PEM – Politécnica/COPPE, Federal University of Rio de Janeiro, UFRJ, Caixa Postal 68503, Cidade Universitária, Rio de Janeiro, 21941-972, Brazil.
Cotta , Renato M. ; DEM/PEM – Politécnica/COPPE, Federal University of Rio de Janeiro, UFRJ, Caixa Postal 68503, Cidade Universitária, Rio de Janeiro, 21941-972, Brazil.
Uncontrolled Keywords:Markov Chain Monte Carlo method, Metropolis-Hastings algorithm, hydraulic parameters, transport parameters, soil column experiment
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:64
Number:1
Page Range:pp. 30-44
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8630
Item Type:Article
Deposited On:16 Feb 2016 11:48
Last Modified:16 Feb 2016 10:48

Citation

Moreira, Paulo H.S.; van Genuchten , Martinus Th.; Orlande, Helcio R. B.; Cotta , Renato M. (2016) Bayesian estimation of the hydraulic and solute transport properties of a small-scale unsaturated soil column. Journal of Hydrology and Hydromechanics, 64 (1). pp. 30-44. ISSN 0042-790X

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