Remote sensing of groundwater: current capabilities and future directions

KH Adams, JT Reager, P Rosen… - Water Resources …, 2022 - Wiley Online Library
Globally, groundwater represents a critical natural resource that is affected by changes in
natural supply and renewal, as well as by increasing human demand and consumption …

Hydraulic tomography offers improved imaging of heterogeneity in fractured rocks

WA Illman - Groundwater, 2014 - Wiley Online Library
Fractured rocks have presented formidable challenges for accurately predicting
groundwater flow and contaminant transport. This is mainly due to our difficulty in mapping …

Human health risk assessment for exposure to BTEXN in an urban aquifer using deterministic and probabilistic methods: A case study of Chennai city, India

B Rajasekhar, IM Nambi, SK Govindarajan - Environmental Pollution, 2020 - Elsevier
Abstract The aquifer in Tondiarpet, Chennai, had been severely contaminated with
petroleum fuels due to an underground pipeline leakage. Groundwater samples were …

Three‐dimensional transient hydraulic tomography in a highly heterogeneous glaciofluvial aquifer‐aquitard system

SJ Berg, WA Illman - Water Resources Research, 2011 - Wiley Online Library
Hydraulic tomography has been proposed as an alternative site characterization method,
however, relatively few field scale studies have been attempted. In this paper, we …

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 …

3‐D transient hydraulic tomography in unconfined aquifers with fast drainage response

M Cardiff, W Barrash - Water Resources Research, 2011 - Wiley Online Library
We investigate, through numerical experiments, the viability of three‐dimensional transient
hydraulic tomography (3DTHT) for identifying the spatial distribution of groundwater flow …

Improved high-resolution characterization of hydraulic conductivity through inverse modeling of HPT profiles and steady-state hydraulic tomography: Field and …

Z Zhao, WA Illman - Journal of Hydrology, 2022 - Elsevier
Direct-push based hydraulic profiling tool (HPT) and geostatistically-based hydraulic
tomography (HT) are two promising techniques for the high-resolution estimation of …

Comparison of hydraulic tomography with traditional methods at a highly heterogeneous site

SJ Berg, WA Illman - Groundwater, 2015 - Wiley Online Library
Over the past several decades, different groundwater modeling approaches of various
complexities and data use have been developed. A recently developed approach for …

On the importance of geological data for hydraulic tomography analysis: Laboratory sandbox study

Z Zhao, WA Illman, SJ Berg - Journal of Hydrology, 2016 - Elsevier
This paper investigates the importance of geological data in Hydraulic Tomography (HT)
through sandbox experiments. In particular, four groundwater models with homogeneous …

Robustness of joint interpretation of sequential pumping tests: Numerical and field experiments

SY Huang, JC Wen, TCJ Yeh, W Lu… - Water Resources …, 2011 - Wiley Online Library
Three conceptual models are evaluated for estimating transmissivity (T) fields using data
from sequential pumping tests at a field site and data from similar tests simulated in a …