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- W4308498425 startingPage "128673" @default.
- W4308498425 abstract "Hydraulic tomography (HT) has been developed over the last two decades to image subsurface heterogeneity at high resolution that is critically important to robust solute transport predictions. In this study, HT based on two concepts (i.e., geological zonation and geostatistical inversion models) was utilized to characterize the K distribution of a laboratory sandbox aquifer at different parameter resolutions. We compared the estimated K fields for predicting independent pumping tests and solute transport using the classical advection–dispersion equation (ADE). The impact of using geological zonation models of varying accuracy for HT analyses was investigated. Results revealed that, when being calibrated to datasets from multiple pumping tests, geological zonation models that faithfully represented the true stratigraphy predicted groundwater flow satisfactorily. The deterministic K field of the calibrated reliable geological zonation models satisfactorily reproduced the preferential migration path of the observed tracer plume, and the breakthrough curves (BTCs) at sampling ports. With further resolving the inter- and intra-layer heterogeneity, the reconstructed K fields by HT better predicted both migrating plumes and BTCs for two conservative tracer tests. The estimated dispersivity values for ADE only resulted in slight improvements in the fitting between observed and simulated solute tracer data. It also demonstrated the need of integrating reliable geological information into the geostatistical inversion approach to reproduce geological structures in K fields. Our study suggested the proper consideration of geological zonation between boreholes during field implementation of HT to yield improved solute transport results." @default.
- W4308498425 created "2022-11-12" @default.
- W4308498425 creator A5005758499 @default.
- W4308498425 creator A5032431731 @default.
- W4308498425 creator A5045977937 @default.
- W4308498425 creator A5065231386 @default.
- W4308498425 date "2022-12-01" @default.
- W4308498425 modified "2023-10-03" @default.
- W4308498425 title "Improving predictions of solute transport in a laboratory sandbox aquifer through high-resolution characterization with hydraulic tomography" @default.
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