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<dc:title xml:lang="en">Techniques for estimating hydraulic parameters of unsaturated soils based on GPR waveform data</dc:title>
<dcterms:alternative xml:lang="fr">Techniques d’estimation des paramètres hydrauliques des sols sableux non saturés sur la base des données de forme d’onde GPR</dcterms:alternative>
<dc:subject xml:lang="fr">Géoradar</dc:subject>
<dc:subject xml:lang="fr">La forme d'onde des données</dc:subject>
<dc:subject xml:lang="fr">Inversion temporelle</dc:subject>
<dc:subject xml:lang="fr">Teneur en eau du sol</dc:subject>
<dc:subject xml:lang="fr">Propriétés hydrauliques du sol</dc:subject>
<dc:subject xml:lang="en">Ground penetrating radar</dc:subject>
<dc:subject xml:lang="en">Waveform data</dc:subject>
<dc:subject xml:lang="en">Time-lapse inversion</dc:subject>
<dc:subject xml:lang="en">Soil water content</dc:subject>
<dc:subject xml:lang="en">Soil hydraulic properties</dc:subject>
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<tef:elementdEntree autoriteExterne="053513649" autoriteSource="Sudoc">Radar à pénétration de sol</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="027504360" autoriteSource="Sudoc">Sols -- Saturation en eau</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Le géoradar (GPR) est un outil prometteur pour estimer la teneur en eau du sol (TES) et les propriétés hydrauliques du sol (PHS). Cependant, la plupart des études actuelles utilisant le géoradar pour déterminer la TES et la PHS ne se concentrent que sur une partie des données, comme le temps de parcours. L'inversion basée sur la forme d'onde complète peut offrir des résultats plus précis. Dans cette étude, nous avons d'abord développé un nouveau schéma d'estimation de la TES basé sur l'inversion de la forme d'onde du GPR avec l'algorithme d'optimisation globale Grey Wolf Optimizer (GWO), puis l'avons validé à l'aide de données synthétiques et expérimentales réelles de terrain. Ensuite, nous avons appliqué ce schéma aux données GPR en temps réel pour surveiller la TES dans la zone vadose. Enfin, nous avons établi un schéma pour déterminer directement les PHS basé sur l'inversion de la forme d'onde GPR avec l'algorithme GWO testé avec des données synthétiques et réelles. Ces résultats de recherche apportent un soutien théorique et technique à l'estimation haute précision de la TES et des PHS par inversion de la forme d'onde du GPR.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Ground Penetrating Radar (GPR) has become a promising tool for soil water content (SWC) and soil hydraulic properties (SHP) estimation. However, most current studies using GPR to determine SWC and SHP only focus on part of data like travel time. Inversion based on the full waveform can provide more accurate results. In this study, we first build a novel SWC estimation scheme based on GPR waveform inversion with the Grey Wolf Optimizer (GWO) global optimization algorithm and validated using synthetic and real experimental field data. Subsequently, we apply this proposed scheme to time-lapse GPR data and realized SWC monitoring in the vadose zone. Finally, we further establish a new scheme for directly determining SHP based on GPR waveform inversion with GWO algorithm and also tested with synthetic and real experimental data. These research findings offer theoretical and technical support for the high-precision estimation of SWC and SHP using GPR waveform inversion.</dcterms:abstract>
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