Research Explorer

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Researcher

Thomas Hermans

130 Results

2022

4D Temperature Monitoring

Thomas HermansRobin Thibaut

Assessing the impact of fractured zones imaged by ERT on groundwater model prediction : a case study in a chalk aquifer in Voort (Belgium)

Bjarn Van RietKristine WalraevensThomas Hermans

A2 Journal Article in FRONTIERS IN WATER

Characterization of salinity in the southwest coastal alluvial terrain in Bangladesh evaluated through hydrogeochemical and geophysical study

Md Mizanur Rahman SarkerKristine WalraevensThomas Hermans

Comparing Well and Geophysical Data for Temperature Monitoring Within a Bayesian Experimental Design Framework

Robin ThibautThomas Hermans

U Journal Article in Water Resources Research

Comparing well and geophysical data for temperature monitoring within a Bayesian Experimental Design framework

Robin ThibautThomas Hermans

Effect of groundwater extraction and artificial recharge on the geophysical footprints of fresh submarine groundwater discharge in the Western Belgian coastal area

Marieke PaepenWouter DeleersnyderKristine WalraevensThomas Hermans

A1 Journal Article in WATER

Geophysical Inversion Using a Variational Autoencoder to Model an Assembled Spatial Prior Uncertainty

Jorge Lopez AlvisThomas Hermans

U Journal Article in Journal of Geophysical Research: Solid Earth

Groundwater Salinization and Freshening Processes in the Luy River Coastal Aquifer, Vietnam

Linh Pham DieuDiep Cong-ThiThomas Hermans

U Journal Article in Water

Hydrogeological, hydrogeophysical and hydrochemical characterization of the Dupi Tila Aquifer in Dhaka City, Bangladesh

Mazeda IslamKristine WalraevensThomas Hermans

Identifying the major hydrogeochemical factors governing groundwater chemistry in the coastal aquifers of Southwest Bangladesh using statistical analysis

Md Mizanur Rahman SarkerThomas HermansMarc Van CampMazeda IslamKristine Walraevens

A2 Journal Article in HYDROLOGY

Iterative prior resampling and rejection sampling to improve 1-D geophysical imaging based on Bayesian evidential learning (BEL1D)

Hadrien MichelThomas Hermans

U Journal Article in Geophysical Journal International

Multidimensional forward modelling of EM induction data within a salinization context : is it worth the extra cost?

Wouter DeleersnyderThomas HermansDavid Dudal

2021

A new framework for experimental design using Bayesian Evidential Learning : the case of wellhead protection area

Robin ThibautThomas Hermans

A1 Journal Article in JOURNAL OF HYDROLOGY

A new framework for experimental design using Bayesian Evidential Learning : the case of wellhead protection area

Robin ThibautThomas Hermans

A new workflow to incorporate prior information in minimum gradient support (MGS) inversion of electrical resistivity and induced polarization data

Robin ThibautThomas Hermans

A1 Journal Article in JOURNAL OF APPLIED GEOPHYSICS

Applying BEL1D for transient electromagnetic sounding inversion

Arsalan AhmedWouter DeleersnyderThomas Hermans

Bayesian Evidential Learning combined with experimental design : the case of wellhead protection area prediction

Robin ThibautThomas Hermans

Bayesian evidential learning : an alternative to hydrogeophysical coupled inversion

Thomas HermansNicolas CompaireRobin Thibaut

Deep generative models in inversion : the impact of the generator's nonlinearity and development of a new approach based on a variational autoencoder

Jorge Lopez AlvisThomas Hermans

A1 Journal Article in COMPUTERS & GEOSCIENCES

Dimensionality reduction for geophysical inversion in highly structured subsurface environments

Jorge Lopez AlvisThomas Hermans

Effect of artificial recharge on submarine groundwater discharge : a Belgian case study

Marieke PaepenKristine WalraevensThomas Hermans

Geochemical characterization of groundwater and saltwater intrusion processes along the Luy River, Binh Thuan, Vietnam

Linh Pham DieuDiep Cong-ThiRobin ThibautMarieke PaepenThomas Hermans

Geophysical delineation of freshwater-saline water interfaces in coastal area of Southwest Bangladesh

Md Mizanur Rahman SarkerMarc Van CampThomas HermansMazeda IslamKristine Walraevens

A1 Journal Article in WATER

Geophysics in support of dynamic landfill management : moving beyond the challenges

Ellen Van De VijverChristin BobeThomas Hermans

Imaging the extent of saltwater intrusion in the Luy river coastal aquifer (Binh Thuan) using electrical resistivity tomography (ERT)

Diep Cong-ThiLinh Pham DieuRobin ThibautMarieke PaepenThomas Hermans

Imaging the structure and the saltwater intrusion extent of the Luy River coastal aquifer (Binh Thuan, Vietnam) using electrical resistivity tomography

Diep Cong-ThiLinh Pham DieuRobin ThibautMarieke PaepenThomas Hermans

A1 Journal Article in WATER

Imaging the subsurface to inform hydrological models : a geophysicist's perspective

Thomas HermansHadrien MichelJorge Lopez Alvis

Improving Flanders’ salinization map : applying a scale-dependent wavelet-based regularization scheme on time-domain electromagnetic inversion

Wouter DeleersnyderDavid DudalThomas Hermans

Integrated studies for hydrogeological, geophysical and hydrochemical characterization of Dupi Tila aquifer, Dhaka city, Bangladesh

Mazeda IslamMarc Van CampThomas HermansMd Mizanur Rahman SarkerKristine Walraevens

Inversion of electromagnetic induction data using a novel wavelet-based and scale-dependent regularization term

Wouter DeleersnyderThomas HermansDavid Dudal

A1 Journal Article in GEOPHYSICAL JOURNAL INTERNATIONAL

Inversion of electromagnetic induction data using a novel wavelet-based and scale-dependent regularization term

Wouter DeleersnyderDavid DudalThomas Hermans

SBO project DISARM (S003719N) : deliverable 2.2A (Report freshwater discharge) and 2.2B (Methodology for combined used of onshore and marine ERT)

Marieke PaepenJorge Lopez AlvisThomas Hermans

Salinization of shallow aquifers in the coastal plain of Southwest Bangladesh

Md Mizanur Rahman SarkerMarc Van CampThomas HermansMazeda IslamKristine Walraevens

The distribution of saline and fresh groundwaters and factors affecting water quality in the coastal aquifers of southwest Bangladesh

Md Mizanur Rahman SarkerMarc Van CampThomas HermansMazeda IslamKristine Walraevens

The evaluation of freshening and salinization in the Luy river coastal aquifers from Southern Central region of Vietnam

Linh Pham DieuDiep Cong-ThiRobin ThibautMarieke PaepenThomas Hermans

Uncertainty quantification of salinity in coastal aquifer (Binah Thuan province, Vietnam) using Bel1D inversion of transient electromagnetic data

Arsalan AhmedWouter DeleersnyderThomas Hermans

Using a variational autoencoder and geologically-consistent transformations to model spatial prior information for geophysical inversion

Jorge Lopez AlvisThomas Hermans

2020

1D geological imaging of the subsurface from geophysical data with Bayesian Evidential Learning

Hadrien MichelThomas Hermans

A1 Journal Article in COMPUTERS & GEOSCIENCES

3D aquifer characterization of the Hermalle-sous-Argenteau test site using crosshole ground-penetrating radar amplitude analysis and full-waveform inversion

A1 Journal Article in GEOPHYSICS

A new framework to reduce uncertainty in Wellhead Protection Area prediction using Bayesian Evidential Learning

Robin ThibautThomas Hermans

Assessment of magnetic data for landfill characterization by means of a probabilistic approach

BEL1D : 1D imaging using geophysical data in the framework of Bayesian Evidential Learning

Hadrien MichelThomas Hermans

Combined inversion of land and marine electrical resistivity tomography for submarine groundwater discharge and saltwater intrusion characterization

Thomas HermansMarieke Paepen

A1 Journal Article in GEOPHYSICAL RESEARCH LETTERS

Combining resistivity and frequency domain electromagnetic methods to investigate submarine groundwater discharge in the littoral zone

Marieke PaepenDaan HanssensPhilippe De SmedtKristine WalraevensThomas Hermans

A1 Journal Article in HYDROLOGY AND EARTH SYSTEM SCIENCES

Constraining gradient-based inversion with a variational autoencoder to reproduce geological patterns

Jorge Lopez AlvisThomas Hermans

Efficient probabilistic joint inversion of direct current resistivity and small-loop electromagnetic data

Christin BobeDaan HanssensThomas HermansEllen Van De Vijver

A2 Journal Article in ALGORITHMS

Estimation of spatially-structured subsurface parameters using variational autoencoders and gradient-based optimization

Jorge Lopez AlvisThomas Hermans

Geochemical characterization of groundwater and saltwater intrusion processes along the Luy River, Binh Thuan, Vietnam

Linh Pham DieuDiep Cong-ThiRobin ThibautMarieke PaepenThomas Hermans

Improving BEL1D accuracy for geophysical imaging of the subsurface

Hadrien MichelThomas Hermans

Improving the accuracy of 1D surface nuclear magnetic resonance surveys using the multi-central-loop configuration

Hadrien MichelThomas Hermans

A1 Journal Article in JOURNAL OF APPLIED GEOPHYSICS

Messages in the bubbles

Corentin CaudronMarc De BatistThomas HermansZakaria Ghazoui

2019

10 years of temperature monitoring experiments using electrical resistivity tomography : what have we learned?

1D geological modeling of the subsurface from geophysical data with Bayesian Evidential Learning

4D electrical resistivity tomography (ERT) for aquifer thermal energy storage monitoring

A1 Journal Article in GEOTHERMICS

A cross-validation framework to extract data features for reducing structural uncertainty in subsurface heterogeneity

Jorge Lopez AlvisThomas Hermans

A1 Journal Article in ADVANCES IN WATER RESOURCES

A multi-method characterization of river-aquifer interaction at the meter-scale : combining field measurements, heat transport modelling and groundwater modelling

Sien BenoitThomas Hermans

A new approach to incorporate prior information in MGS inversion of ERT/IP data

Robin ThibautThomas Hermans

Assessment of short-term aquifer thermal energy storage for demand-side management perspectives

Assessment of short-term aquifer thermal energy storage for demand-side management perspectives : experimental and numerical developments

A1 Journal Article in APPLIED ENERGY

Basis-constrained Bayesian Markov-chain Monte Carlo difference inversion for geoelectrical monitoring of hydrogeologic processes

A1 Journal Article in GEOPHYSICS

Bayesian evidential learning : a field validation using push-pull tests

A1 Journal Article in HYDROGEOLOGY JOURNAL

Characterization of spatially variable riverbed hydraulic conductivity using electrical resistivity tomography and induced polarization

Sien BenoitThomas Hermans

A1 Journal Article in HYDROGEOLOGY JOURNAL

Combining geophysical methods to investigate the salt/freshwater interface at the vicinity of water extraction facilities

Marieke PaepenDaan HanssensPhilippe De SmedtKristine WalraevensThomas Hermans

Efficient deterministic inversion of geophysical data constrained by deep generative models to estimate subsurface parameters with defined spatial patterns

Jorge Lopez AlvisThomas Hermans

Heat as a proxy to image dynamic processes with 4D electrical resistivity tomography

A2 Journal Article in BIOGEOSCIENCES

Heterogeneity and prior uncertainty investigation using a joint heat and solute tracer experiment in alluvial sediments

A1 Journal Article in FRONTIERS IN EARTH SCIENCE

How informative are single well tracing experiments? : an assessment using Bayesian evidential learning

Hydrochemical characteristics of multilayer Dupi Tila aquifer system beneath Dhaka Mega City, Bangladesh

Mazeda IslamMarc Van CampThomas HermansMd Mizanur Rahman SarkerKristine Walraevens

Improving Bayesian Evidential Learning 1D imaging (BEL1D) accuracy through iterative prior resampling

Hadrien MichelThomas Hermans

Improving the reliability of soil EC-mapping : robust apparent electrical conductivity (rECa) estimation in ground-based frequency domain electromagnetics

Daan HanssensSamuël DelefortrieChristin BobeThomas HermansPhilippe De Smedt

A1 Journal Article in GEODERMA

Integrated geophysical and hydrochemical approach to water quality assessment in coastal aquifers of Southwest Bangladesh

Md Mizanur Rahman SarkerMarc Van CampThomas HermansMazeda IslamKristine Walraevens

Joint inversion of land and marine electrical resistivity tomography for imaging submarine freshwater discharge

Thomas HermansMarieke Paepen

Modeling a heat tracer test in alluvial sediments using Monte Carlo : on the importance of the prior

Probabilistic joint interpretation of geoelectrical and seismic data for landfill characterization

Proposition d'un support d'aide à la décision pour l'amélioration de l'accès à une eau souterraine de meilleure qualité dans un contexte de contamination géogénique au fluorure au Bénin, Afrique de l'Ouest

2018

Assessment of groundwater discharge and saltwater intrusion in the Belgian coastal area through geophysics

Marieke PaepenKristine WalraevensThomas Hermans

Basis-constrained Bayesian-McMC : hydrologic process parameterization of stochastic geoelectrical imaging of solute plumes

Basis-constrained Bayesian-McMC difference inversion for geoelectrical monitoring of a field-scale heat tracing experiment

Can short-term heat tracing experiments predict the long-term behavior of ATES systems?

Can short-term hydrogeological experiments predict the long-term behavior of subsurface reservoirs? : an example from shallow geothermy

Direct prediction of temperature from time-lapse ERT using Bayesian Evidential Learning : extension to a 4D experiment

Experimental assessment and prediction of short-term aquifer thermal energy storage for energy demand-side management applications

Geophysical investigation of the Pb-Zn deposit of Lontzen-Poppelsberg, Belgium

A1 Journal Article in MINERALS

Improving the accuracy of 1D SNMR surveys using the multi-central-loop configuration

Integration of spatially variable riverbed hydraulic conductivity from Electrical Resistivity Tomography (ERT) and Induced Polarization (IP) into a groundwater flow model using multiple-point geostatistics

Sien BenoitThomas Hermans

Predictive mapping of fluoride levels in groundwater in Central Benin (Western Africa) using a geostatistical approach

Prior uncertainty investigation of density-viscosity dependent joint transport of heat and solute in alluvial sediments

Quantifying uncertainty in subsurface systems

Bookchapter in Quantifying uncertainty in subsurface systems

The earth resources challenge

Bookchapter in Quantifying uncertainty in subsurface systems

Towards a subsurface predictive-model environment to simulate aquifer thermal energy storage for demand-side management applications

Uncertainty quantification of medium-term heat storage from short-term geophysical experiments using Bayesian Evidential Learning

A1 Journal Article in WATER RESOURCES RESEARCH

Uncoupled and coupled hydrogeophysical inversions of seawater intrusion and geothermal hydrologic models

Updating prior geologic uncertainty with GPR traveltime tomographic data

Jorge Lopez AlvisThomas Hermans

Updating structural uncertainty through dimension reduction of geophysical data

Jorge Lopez AlvisThomas Hermans

Use and challenges of geophysics to study processes in agro-ecosystems

2017

3D electrical resistivity tomography of karstified formations using cross-line measurements

A1 Journal Article in ENGINEERING GEOLOGY

A new approach for time-lapse data weighting in electrical resistivity tomography

A1 Journal Article in GEOPHYSICS

Characterization of riverbed sediments hydraulic conductivity using slug tests and electrical resistivity/Induced polarization tomography

Sien BenoitThomas Hermans

Direct prediction of aquifer thermal energy storage system efficiency using short-term push-pull tests

Facies discrimination with electrical resistivity tomography using a probabilistic methodology : effect of sensitivity and regularization

A1 Journal Article in NEAR SURFACE GEOPHYSICS

Groundwater temperature estimation and modeling using hydrogeophysics

Hydrogeophysical inversion using the prediction-focused approach : methodology and application

Integrating non-colocated well and geophysical data to capture subsurface heterogeneity at an aquifer recharge and recovery site

A1 Journal Article in JOURNAL OF HYDROLOGY

Prediction-focused approaches : an opportunity for hydrology

A1 Journal Article in GROUNDWATER

Quantification of temperature with time-lapse electrical resistivity using the prediction-focused approach : a field case

Recent developments using ERT-derived temperature for monitoring and characterizing aquifers (invited)

Spatio-temporal monitoring of heat storage in a shallow aquifer using electrical resistivity 4D imagery and DTS

The mathematical challenges in agrogeophysics : examples and ways ahead

Using geophysical hard data to enhance the reliability of hydrological models

2016

Covariance-constrained difference inversion of time-lapse electrical resistivity tomography data

A1 Journal Article in GEOPHYSICS

Data-driven selection of the minimum-gradient support parameter in time-lapse focused electrical imaging

A1 Journal Article in GEOPHYSICS

Direct prediction of spatially and temporally varying physical properties from time-lapse electrical resistance data

A1 Journal Article in WATER RESOURCES RESEARCH

Gravimetric water distribution assessment from geoelectrical methods (ERT and EMI) in municipal solid waste landfill

A1 Journal Article in WASTE MANAGEMENT

Heat tracer test in an alluvial aquifer : field experiment and inverse modelling

A1 Journal Article in JOURNAL OF HYDROLOGY

Stockage de chaleur en aquifère et flexibilité de la demande électrique : quelles possibilités?

2015

Assessing electrical resistivity tomography for hydrofacies detection using a sensitivity dependent probabilistic methodology

Quantitative temperature monitoring of a heat tracing experiment using cross-borehole ERT

A1 Journal Article in GEOTHERMICS

Uncertainty in training image-based inversion of hydraulic head data constrained to ERT data : workflow and case study

A1 Journal Article in WATER RESOURCES RESEARCH

2014

Assessing the probability of training image-based geological scenarios using geophysical data

Case studies of incorporation of prior information in electrical resistivity tomography : comparison of different approaches

A1 Journal Article in NEAR SURFACE GEOPHYSICS

Coupling heat and chemical tracer experiments for estimating heat transfer parameters in shallow alluvial aquifers

A1 Journal Article in JOURNAL OF CONTAMINANT HYDROLOGY

Geophysical methods for monitoring temperature changes in shallow low enthalpy geothermal systems

A1 Journal Article in ENERGIES

2013

A heat injection and pumping experiment in a gravel aquifer monitored with crosshole electrical resistivity tomography

Reliability of ERT-derived temperature : insights from laboratory measurements

2012

A shallow geothermal experiment in a sandy aquifer monitored using electric resistivity tomography

Thomas HermansAlexander VandenbohedeLuc Lebbe

A1 Journal Article in GEOPHYSICS

Comparison of temperature estimates from heat transport model and electrical resistivity tomography during a shallow heat injection and storage experiment

Thomas HermansAlexander Vandenbohede

Imaging artificial salt water infiltration using electrical resistivity tomography constrained by geostatistical data

Thomas HermansAlexander VandenbohedeLuc Lebbe

A1 Journal Article in JOURNAL OF HYDROLOGY

2011

How to incorporate prior information in geophysical inverse problems : deterministic and geostatistical approaches

Shallow heat injection and storage experiment: heat transport simulation and sensitivity analysis

Alexander VandenbohedeThomas HermansLuc Lebbe

A1 Journal Article in JOURNAL OF HYDROLOGY

2010

Suivi d'un test géothermique peu profond dans un aquifère sabelux par tomographie de résistivité électrique : étude de faisabilité

Thomas HermansAlexander VandenbohedeLuc Lebbe