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Time-Lapse ERT, moment analysis, and numerical modeling for estimating the hydraulic conductivity of unsaturated rock
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Orientador(es)
Resumo(s)
In recent years, geophysical techniques have been increasingly used to monitor flow and
transport processes in the Earth critical zone (ECZ). Among these, electrical resistivity tomography
(ERT) is a powerful tool used to predict hydrological parameters and state variables that influence
the mentioned processes in the vadose zone because of the strong correlation between electrical
and hydrological properties of the filtering medium. There have been many field tests considering
geophysical prospecting in soils, where point scale hydrological sensors measurements are typically
collected through sensors for geophysical data validation; on the contrary, when the unsaturated
zone is made of hard rocks, the installation of such sensors is not a trivial issue owing to the extreme
difficulties to guarantee contact between sensors and the surrounding medium. In this context,
the geophysical data combined with appropriate numerical analysis techniques can effectively
overcome the lack of information of the unsaturated subsurface, which is otherwise unpredictable
with traditional methods. In the proposed case study, hydrogeophysical data were collected to
provide a quantitative estimation of the hydraulic conductivity of sandstone through an integrated
approach based on the moment analysis technique and numerical modeling.
Descrição
Palavras-chave
Unsaturated zone Hydrogeophysical monitoring Hydraulic conductivity Moment analysis
Contexto Educativo
Citação
Carlo, L. De, Farzamian, M., Turturro, A. C., & Caputo, M. C. (2023). Time-Lapse ERT, moment analysis, and numerical modeling for estimating the hydraulic conductivity of unsaturated rock. Water, 15(2), 332. https://doi.org/10.3390/w15020332
Editora
MDPI