Surface parameters and bedrock properties covary across a mountainous watershed: Insights from machine learning and geophysics

S Uhlemann, B Dafflon, HM Wainwright… - Science …, 2022 - science.org
Bedrock property quantification is critical for predicting the hydrological response of
watersheds to climate disturbances. Estimating bedrock hydraulic properties over watershed …

Subsurface imaging of water electrical conductivity, hydraulic permeability and lithology at contaminated sites by induced polarization

PK Maurya, N Balbarini, I Møller… - Geophysical Journal …, 2018 - academic.oup.com
At contaminated sites, knowledge about geology and hydraulic properties of the subsurface
and extent of the contamination is needed for assessing the risk and for designing potential …

Quantifying reagent spreading by cross‐borehole electrical tomography to assess performance of groundwater remediation

L Lévy, R Thalund‐Hansen, T Bording… - Water Resources …, 2022 - Wiley Online Library
In situ remediation of contaminated groundwater often relies on the installation of a
treatment zone (TZ) degrading the contamination. Zero‐valent‐iron (ZVI) is a type of reagent …

Spectral induced polarization (SIP) of denitrification‐driven microbial activity in column experiments packed with calcareous aquifer sediments

C Strobel, S Abramov, JA Huisman… - Journal of …, 2023 - Wiley Online Library
Abstract Spectral Induced Polarization (SIP) has been suggested as a non‐invasive
monitoring proxy for microbial processes. Under natural conditions, however, multiple and …

Assessing Contaminant Mass Discharge Uncertainty With Application of Hydraulic Conductivities Derived From Geoelectrical Cross‐Borehole Induced Polarization …

R Thalund‐Hansen, M Troldborg, L Levy… - Water Resources …, 2023 - Wiley Online Library
A new methodology was developed to support contaminant mass discharge (CMD)‐based
risk assessment of groundwater contamination downgradient of point source zones …

Sensitivity analysis of inverted model parameters from transient electromagnetic measurements affected by induced polarization effects

L Aigner, D Werthmüller, AF Orozco - Journal of Applied Geophysics, 2024 - Elsevier
We investigate the application of the distance-based global sensitivity analysis (DGSA) to
evaluate the sensitivity of electrical model parameters obtained from transient …

Imaging hydraulic conductivity in near-surface aquifers by complementing cross-borehole induced polarization with hydraulic experiments

L Römhild, G Fiandaca, L Hu, L Meyer… - Advances in Water …, 2022 - Elsevier
Precise information about the spatial distribution of hydraulic conductivity (K) in an aquifer is
essential for the reliable modeling of groundwater flow and transport processes. In this …

Electrical resistivity tomography and time-domain induced polarization field investigations of geothermal areas at Krafla, Iceland: comparison to borehole and …

L Lévy, PK Maurya, S Byrdina… - Geophysical Journal …, 2019 - academic.oup.com
Interaction of H2S and basaltic rocks in volcanic geothermal areas can originate from natural
up-flow of magmatic fluids or H2S artificial re-injection in relation to geothermal exploitation …

A geostatistical Markov chain Monte Carlo inversion algorithm for electrical resistivity tomography

M Aleardi, A Vinciguerra, A Hojat - Near Surface Geophysics, 2021 - earthdoc.org
Electrical resistivity tomography is an ill‐posed and nonlinear inverse problem commonly
solved through deterministic gradient‐based methods. These methods guarantee a fast …

Investigation of cable effects in spectral induced polarization imaging at the field scale using multicore and coaxial cables

A Flores Orozco, L Aigner, J Gallistl - Geophysics, 2021 - library.seg.org
The spectral induced polarization (SIP) method has emerged as a well-suited laboratory
technique to characterize hydrogeologic and biogeochemical parameters in soil samples …