Probabilistic Identification of Unsaturated Soil Hydraulic Properties from Single Ring Infiltration Experiment

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00331369" target="_blank" >RIV/68407700:21110/19:00331369 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Probabilistic Identification of Unsaturated Soil Hydraulic Properties from Single Ring Infiltration Experiment
Original language description
Knowledge of soil hydraulic properties is essential for modelling hydrodynamic phenomenons in soils under variably saturated conditions. This contribution focuses specifically on the properties of the top layer of soil which fundamentally influences the rainfall-runoff process, but the laboratory experimental procedures for the top-soil are very limited due to e.g. vegetation disturbing the experimental samples. The Richards equation describing the soil water flow process is here parameterised by the Mualem-van Genuchten model. The identification of the soil hydraulic parameters of this model is based on an in situ measurement of the single ring infiltration experiment. The experimental data and a priori information about parameters' values are combined according to Bayes' rule in order to obtain an updated probabilistic description of unknown parameters. The Bayesian inference is realized by the Markov chain Monte Carlo method based on a less time-consuming polynomial approximation of the Mualem-van Genuchten model.
Czech name
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Czech description
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Project
<a href="/en/project/GA18-04262S" target="_blank" >GA18-04262S: Probabilistic identification of material transport parameters based on non-invasive experimental measurements</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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