Younes Anis auteur aut IRD Shao Q. auteur aut IRD Mara T. A. auteur aut IRD Baalousha H. M. auteur aut IRD Fahs M. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Accurate simulation of flow and contaminant transport processes through unsaturated soils requires adequate knowledge of the soil parameters. This study deals with the hydraulic characterization of soils using laboratory experiments. A new strategy is developed by combining global sensitivity analysis (GSA) and Bayesian data-worth analysis (DWA) to obtain efficient data that ensure a good estimation of the soil properties. The strategy is applied for the estimation of soil properties from a laboratory infiltration experiment. Results of this study show that GSA allows identification of regions and periods of high sensitivity of each parameter and thereby, the observations prone to contain information for a successful calibration. Further, the sensitivity depicts a nonlinear behavior with regions of high influence and regions of weak influence inside the parameter space. Bayesian DWA, performed a priori, allows to quantify the improvement of the posterior uncertainty of the estimated parameters when adding a type of measurement. The results reveal that an accurate estimation of the soil properties can be obtained if the target parameter values are located in the regions of high influence in the parameter space. specialized global sensitivity analysis data-worth analysis parameter estimation unsaturated soil Bayesian inference laboratory experiment 068 062 020 12 3 art. 736 [15 ] 2020 https://www.documentation.ird.fr/hor/fdi:010079086 10.3390/w12030736 [F B010079086] https://www.documentation.ird.fr/hor/fdi:010079086 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers20-05/010079086.pdf IRD - Base Horizon / Pleins textes 2020-06-09 2025-02-24 fdi:010079086 fre