Research Explorer

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Researcher

Thomas Hermans

109 Results

2021

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

Robin ThibautThomas KremerAnnie RoyenBun Kim NgunFrédéric NguyenThomas Hermans

A1 Journal Article in JOURNAL OF APPLIED GEOPHYSICS

Applying BEL1D for transient electromagnetic sounding inversion

Arsalan AhmedHadrien MichelWouter DeleersnyderDavid DudalThomas Hermans

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

Robin ThibautThomas HermansEric Laloy

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 AlvisEric LaloyFrédéric NguyenThomas Hermans

A1 Journal Article in COMPUTERS & GEOSCIENCES

Dimensionality reduction for geophysical inversion in highly structured subsurface environments

Jorge Lopez AlvisFrédéric NguyenThomas 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 PaepenTom SegersHuyen Dang ThiHieu Huu HoFrederic NguyenThomas Hermans

Geophysical Delineation of Freshwater–Saline Water Interfaces in Coastal Area of Southwest Bangladesh

Md Mizanur Rahman SarkerMarc Van CampThomas HermansDelwar HossainMazeda IslamMohammad Zohir UddinNasir AhmedMd. Abdul Quaiyum BhuiyanMd. Masud KarimKristine Walraevens

U Journal Article in Water

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 PaepenHuu Hieu HoFrédéric NguyenThomas 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 PaepenHuu Hieu HoFrédéric NguyenThomas Hermans

A1 Journal Article in WATER

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

Thomas HermansHadrien MichelJorge Lopez AlvisFrédéric Nguyen

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

Wouter DeleersnyderBenjamin MaveauThomas 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 DeleersnyderBenjamin MaveauDavid 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 HermansDelwar HossainMazeda IslamMd. Abdul Quaiyum BhuiyanKristine Walraevens

Uncertainty quantification of salinity in costal aquifer (Binah Thuan province, Vietnam) using BEL1D inversion of transient electromagnetic data

Arsalan AhmedWouter DeleersnyderHadrien MichelDavid DudalThomas Hermans

2020

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

Hadrien MichelFrédéric NguyenThomas KremerAnn ElenThomas 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

Zhen ZhouAnja KlotzscheThomas HermansFrédéric NguyenJessica SchmäckPeleg HaruziHarry VereeckenJan van der Kruk

A1 Journal Article in GEOPHYSICS

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

Robin ThibautThomas HermansEric Laloy

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

Itzel Isunza ManriqueDavid CaterinaCornelia InauenArnaud WatletBen DashwoodTom DebounyThomas HermansFrederic Nguyen

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

Hadrien MichelFrédéric NguyenThomas 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 AlvisEric LaloyThomas HermansFrédéric Nguyen

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 AlvisEric LaloyThomas HermansFrédéric Nguyen

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

Linh Pham DieuDiep Cong-ThiRobin ThibautMarieke PaepenTom SegersDang Thi HuyenHieu Ho HuuFrederic NguyenThomas Hermans

Improving BEL1D accuracy for geophysical imaging of the subsurface

Hadrien MichelThomas HermansThomas KremerFrédéric Nguyen

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

Thomas KremerMike Müller-PetkeHadrien MichelRaphael DlugoschTrevor IronsThomas HermansFrédéric Nguyen

A1 Journal Article in JOURNAL OF APPLIED GEOPHYSICS

Messages in the bubbles

Corentin CaudronMarc De BatistGuillaume JouveGuillaume MatteThomas HermansAdrian Flores-OrozcoWim VersteegZakaria GhazouiPhilippe RouxJean VandemeulebrouckBernd Schmidt

2019

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

Thomas HermansFrédéric NguyenGuillaume De SchepperNolwenn LesparreTanguy Robert

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

Hadrien MichelThomas HermansFrédéric Nguyen

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

Nolwenn LesparreTanguy RobertFrédéric NguyenAlistair BoyleThomas Hermans

A1 Journal Article in GEOTHERMICS

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

Jorge Lopez AlvisThomas HermansFrédéric Nguyen

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

Gert GhyselsSien BenoitHenock AwolAbebe Debele TolcheThomas HermansFrédéric NguyenChristian AnibasMarijke Huysmans

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

Robin ThibautThomas KremerAnnie RoyenFrédéric NguyenThomas Hermans

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

Guillaume De SchepperClaire PaulusPierre-Yves BollyThomas HermansNolwenn LesparreTanguy Robert

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

Guillaume De SchepperClaire PaulusPierre-Yves BollyThomas HermansNolwenn LesparreTanguy Robert

A1 Journal Article in APPLIED ENERGY

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

Erasmus Kofi OwareJames IrvingThomas Hermans

A1 Journal Article in GEOPHYSICS

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

Thomas HermansNolwenn LesparreGuillaume De SchepperTanguy Robert

A1 Journal Article in HYDROGEOLOGY JOURNAL

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

Sien BenoitGert GhyselsKevin GommersThomas HermansFrédéric NguyenMarijke Huysmans

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 AlvisEric LaloyThomas HermansFrédéric Nguyen

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

Tanguy RobertClaire PaulusPierre-Yves BollyEmma Koo Seen LinThomas Hermans

A2 Journal Article in BIOGEOSCIENCES

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

Richard HoffmannAlain DassarguesPascal GoderniauxThomas Hermans

A1 Journal Article in FRONTIERS IN EARTH SCIENCE

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

Thomas HermansGuillaume De SchepperNolwenn LesparreTanguy Robert

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

Mazeda IslamMarc Van CampThomas HermansMd Mizanur Rahman SarkerMd Abdul Quaiyum BhuiyanNasir AhmedMd Masud KarimKristine Walraevens

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

Hadrien MichelFrédéric NguyenThomas 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 HermansDelwar HossainMazeda IslamNasir AhmedMd Masud KarimMd Abdul Quaiyum BhuiyanMohammad Zohir UddinKristine 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

Richard HoffmannAlain DassarguesPascal GoderniauxThomas Hermans

Probabilistic joint interpretation of geoelectrical and seismic data for landfill characterization

Itzel Isunza ManriqueDavid CaterinaThomas HermansFrédéric Nguyen

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

Joël TossouThomas HermansLéonce Firmin DovononPhilippe OrbanMoussa BoukariSerge Brouyère

2018

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

Marieke PaepenHadrien MichaelKristine WalraevensThomas Hermans

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

Erasmus Kofi OwareMichael AwateyThomas HermansJames Irving

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

Erasmus OwareThomas HermansJames Irving

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

Thomas HermansFrédéric NguyenTanguy RobertNolwenn LesparreJef Caers

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

Thomas HermansFrédéric NguyenNolwenn LesparreJef CaersTanguy Robert

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

Thomas HermansNicolas CompaireNolwenn Lesparre

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

Tanguy RobertThomas HermansNolwenn LesparreFrédéric NguyenClaire PaulusPierre-Yves BollyAgathe DefournyPierre JaminPhilippe OrbanSerge BrouyèreAlain Dassargues

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

Maxime EvrardGaël DumontThomas HermansMichel ChouteauOlivier FrancisEric PirardFrédéric Nguyen

A1 Journal Article in MINERALS

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

T KremerH MichelM Müller-PetkeT IronsThomas HermansR DugloshF Nguyen

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

Marijke HuysmansGert GhyselsSien BenoitKevin GommersThomas HermansFrédéric Nguyen

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

Yao Yélidji Joël TossouThomas HermansPhilippe OrbanMoussa BakariSerge Brouyère

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

Richard HoffmanThomas HermansPascal GoderniauxAlain Dassargues

Quantifying uncertainty in subsurface systems

Céline ScheidtLewis LiJef CaersTroels Norvin VilhelmsenKate MaherCarla Da SilvaThomas HermansOgnjen GrujicJihoon ParkGuang Yang

Bookchapter in Quantifying uncertainty in subsurface systems

The earth resources challenge

Céline ScheidtLewis LiJef CaersTroels Norvin VilhelmsenKate MaherCarla Da SilvaThomas HermansOgnjen GrujicJihoon ParkGuang Yang

Bookchapter in Quantifying uncertainty in subsurface systems

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

Tanguy RobertThomas HermansNolwenn LesparreGuillaume De SchepperFrédéric NguyenAgathe DefournyPierre JaminPhilippe OrbanSerge BrouyèreAlain Dassargues

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

Thomas HermansFrédéric NguyenMaria KlepikovaAlain DassarguesJef Caers

A1 Journal Article in WATER RESOURCES RESEARCH

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

Jean BeaujeanThomas HermansFrédéric Nguyen

Updating prior geologic uncertainty with GPR traveltime tomographic data

Jorge Lopez AlvisFrédéric NguyenThomas Hermans

Updating structural uncertainty through dimension reduction of geophysical data

Frédéric NguyenJorge Lopez AlvisThomas Hermans

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

Sarah GarréMathieu JavauxGaël DumontNolwenn LesparreThomas HermansFrédéric Nguyen

2017

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

Maurits Van HoordeThomas HermansGael DumontFrédéric Nguyen

A1 Journal Article in ENGINEERING GEOLOGY

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

N LesparreF NguyenA KemnaT RobertThomas HermansM DaoudiA Flores Orozco

A1 Journal Article in GEOPHYSICS

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

Frédéric NguyenSien BenoitKevin GommersGert GhyselsThomas HermansMarijke Huysmans

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

Thomas HermansN LesparreT KremerJ CaersF NguyenT Robert

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

Thomas HermansJames Irving

A1 Journal Article in NEAR SURFACE GEOPHYSICS

Groundwater temperature estimation and modeling using hydrogeophysics

Frédéric NguyenNolwenn LesparreThomas HermansAlain DassarguesMaria KlepikovaAndreas KemnaJef Caers

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

Thomas HermansErasmus OwareJef CaersFrédéric Nguyen

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

Ian P GottschalkThomas HermansRosemary KnightJef CaersDavid A CameronJulia RegneryJohn E McCray

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

Thomas HermansF NguyenJ Caers

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

Frédéric NguyenNolwenn LesparreMaria KlepikovaJef CaersAndreas KemnaThomas Hermans

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

N LesparreThomas HermansF NguyenT KremerT Robert

The mathematical challenges in agrogeophysics : examples and ways ahead

Sarah GarréFrédéric NguyenNolwenn LesparreThomas Hermans

Using geophysical hard data to enhance the reliability of hydrological models

G De SchepperC PaulusJ MolronP-Y BollyThomas HermansT Robert

2016

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

Thomas HermansAndreas KemnaFrédéric Nguyen

A1 Journal Article in GEOPHYSICS

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

Frédéric NguyenAndreas KemnaTanguy RobertThomas Hermans

A1 Journal Article in GEOPHYSICS

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

Thomas HermansErasmus OwareJef Caers

A1 Journal Article in WATER RESOURCES RESEARCH

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

Gael DumontTamara PilawskiPhidias Dzaomuho-LenieregueSerge HiligsmannFrank DelvignePhilippe ThonartTanguy RobertFrédéric NguyenThomas Hermans

A1 Journal Article in WASTE MANAGEMENT

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

Maria KlepikovaSamuel WildemeerschThomas HermansPierre JaminPhilippe OrbanFrédéric NguyenSerge BrouyèreAlain Dassargues

A1 Journal Article in JOURNAL OF HYDROLOGY

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

Claire PaulusPierre-Yves BollyThomas HermansEmma Koo Seen LinTanguy Robert

2015

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

Thomas HermansJ Irving

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

Thomas HermansSamuel WildemeerschPierre JaminPhilippe OrbanSerge BrouyèreAlain DassarguesFrédéric Nguyen

A1 Journal Article in GEOTHERMICS

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

Thomas HermansFrédéric NguyenJef Caers

A1 Journal Article in WATER RESOURCES RESEARCH

2014

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

Thomas HermansJef CaersFrédéric Nguyen

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

David CaterinaThomas HermansFrédéric Nguyen

A1 Journal Article in NEAR SURFACE GEOPHYSICS

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

S WildemeerschP JaminP OrbanThomas HermansM KlepikovaF NguyenS BrouyèreA Dassargues

A1 Journal Article in JOURNAL OF CONTAMINANT HYDROLOGY

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

Thomas HermansFrédéric NguyenTanguy RobertAndré Revil

A1 Journal Article in ENERGIES

2013

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

Thomas HermansS WildemeerschP JaminP OrbanS BrouyèreA DassarguesF Nguyen

Reliability of ERT-derived temperature : insights from laboratory measurements

T RobertThomas HermansG DumontF NguyenD Rwabuhungu

2012

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

Thomas HermansAlexander VandenbohedeLuc LebbeFrédéric Nguyen

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 HermansMoubarak DaoudiAlexander VandenbohedeTanguy RobertDavid CaterinaFrédéric Nguyen

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

Thomas HermansAlexander VandenbohedeLuc LebbeRoland MartinAndreas KemnaJean BeaujeanFrédéric Nguyen

A1 Journal Article in JOURNAL OF HYDROLOGY

2011

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

Thomas HermansD CaterinaR MartinA KemnaT RobertF Nguyen

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

Alexander VandenbohedeThomas HermansFrédéric NguyenLuc 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 VandenbohedeFrédéric NguyenLuc Lebbe