Three-dimensional imaging of aquifer and aquitard heterogeneity via transient hydraulic tomography at a highly heterogeneous field site

Z Zhao, WA Illman - Journal of Hydrology, 2018 - Elsevier
Previous studies have shown that geostatistics-based transient hydraulic tomography (THT)
is robust for subsurface heterogeneity characterization through the joint inverse modeling of …

Incorporating geologic information into hydraulic tomography: A general framework based on geostatistical approach

Y Zha, TCJ Yeh, WA Illman, H Onoe… - Water Resources …, 2017 - Wiley Online Library
Hydraulic tomography (HT) has become a mature aquifer test technology over the last two
decades. It collects nonredundant information of aquifer heterogeneity by sequentially …

Equivalence of discrete fracture network and porous media models by hydraulic tomography

Y Dong, Y Fu, TCJ Yeh, YL Wang, Y Zha… - Water Resources …, 2019 - Wiley Online Library
Hydraulic tomography (HT) has emerged as a potentially viable method for mapping
fractures in geologic media as demonstrated by recent studies. However, most of the studies …

A hierarchical Bayesian framework embedded with an improved orthogonal series expansion for Gaussian processes and fields identification

M Ping, X Jia, C Papadimitriou, X Han, C Jiang… - … Systems and Signal …, 2023 - Elsevier
A new hierarchical Bayesian framework (HBM) is proposed for identification of Gaussian
processes or fields, which are usually used for simulating uncertainty in temporal variability …

A reduced‐order successive linear estimator for geostatistical inversion and its application in hydraulic tomography

Y Zha, TCJ Yeh, WA Illman, W Zeng… - Water Resources …, 2018 - Wiley Online Library
Hydraulic tomography (HT) is a recently developed technology for characterizing high‐
resolution, site‐specific heterogeneity using hydraulic data (nd) from a series of cross‐hole …

Characterization of the non-Gaussian hydraulic conductivity field via deep learning-based inversion of hydraulic-head and self-potential data

Z Han, X Kang, J Wu, X Shi - Journal of Hydrology, 2022 - Elsevier
Accurate characterization of the spatial heterogeneity of hydraulic properties such as
hydraulic conductivity (K) is essential for understanding groundwater flow and contaminant …

Three‐dimensional steady‐state hydraulic tomography analysis with integration of cross‐hole flowmeter data at a highly heterogeneous site

N Luo, Z Zhao, WA Illman, Y Zha… - Water Resources …, 2023 - Wiley Online Library
Hydraulic tomography (HT) has been shown to be a robust approach for the high‐resolution
characterization of subsurface heterogeneity. However, HT can yield smooth estimates of …

Bayesian inference of random fields represented with the Karhunen–Loève expansion

F Uribe, I Papaioannou, W Betz, D Straub - Computer Methods in Applied …, 2020 - Elsevier
The integration of data into engineering models involving uncertain and spatially varying
parameters is oftentimes key to obtaining accurate predictions. Bayesian inference is …

On the importance of geological data for three-dimensional steady-state hydraulic tomography analysis at a highly heterogeneous aquifer-aquitard system

Z Zhao, WA Illman - Journal of Hydrology, 2017 - Elsevier
Hydraulic tomography (HT) has been shown to map subsurface heterogeneity accurately
through the joint interpretation of multiple pumping tests. Previous research has shown that …

Numerical investigation of hydraulic tomography for mapping karst conduits and its connectivity

S Li, X Wang, Z Xu, D Mao, D Pan - Engineering Geology, 2021 - Elsevier
Hydraulic tomography (HT) is a well-established approach to successfully describe
subsurface hydraulic heterogeneity. This work explored the potential of HT and the …