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Communication Dans Un Congrès Année : 2021

Global sensitivity analysis of Magnetic Resonance Sounding simulated responses to the hydraulic parameters of a catchment hydrogeological model

Résumé

We apply a global sensitivity analysis of magnetic resonance sounding (MRS) data to the hydraulic parameters of a hydrological model at a catchment scale. The methodology used provides a quantitative estimate of the proportion to which the explored parameters influence the simulated MRS response. The sensitivity analysis is performed through a variance-based approach that provides indicators to infer how the MRS sensitivity to the different parameters might vary in space and time. We also apply the sensitivity analysis to water table depth estimates. We show that MRS measurements complement fruitfully classical water table depth acquisitions. Indeed, MRS is sensitive to the model water content at saturation while this parameter does not influence significantly the water table depth estimates.
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Dates et versions

hal-03864192 , version 1 (21-11-2022)

Identifiants

  • HAL Id : hal-03864192 , version 1

Citer

Nolwenn Lesparre, Philippe Ackerer, Jean-François Girard, Anis Younes, Thierry A. Mara. Global sensitivity analysis of Magnetic Resonance Sounding simulated responses to the hydraulic parameters of a catchment hydrogeological model. 8th International workshop on magnetic resonance, Oct 2021, Strasbourg, France. ⟨hal-03864192⟩
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