4. Electromagnetic Theory for Geophysical Applications

PreviousNext No AccessElectromagnetic Methods in Applied Geophysics: Volume 1, Theory4. Electromagnetic Theory for Geophysical ApplicationsAuthors: Stanley H. WardGerald W. HohmannStanley H. WardDepartment of Geology and Geophysics, , University of Utah, Utah, USDepartment of Geology and Geophysics, , University of Utah, Utah, USSearch for more papers by this author and Gerald W. HohmannDepartment of Geology and Geophysics, , University of Utah, Utah, USDepartment of Geology and Geophysics, , University of Utah, Utah, USSearch for more papers by this authorhttps://doi.org/10.1190/1.9781560802631.ch4 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Section 1 Fundamental Electromagnetism To comprehend the bases and the interpretational techniques of electrical prospecting methods, requires first a knowledge of the tools of electromagnetic theory. The ability to solve a boundary-value problem in electromagnetic theory then becomes the objective. All electromagnetic phenomena are governed by the empirical Maxwell's equations; we must start with them. Maxwell's equations are uncoupled first-order linear differential equations but can be coupled by the empirical constitutive relations which reduce the number of basic vector field functions from five to two. Care must be taken in selecting the form of the constitutive relations pertinent to the earth. In particular, for most earth problems, we assume isotropy, homogeneity, linearity, and temperature-time-pressure independence of the electrical parameters of local regions of the earth. A more complicated earth model is formed by juxtaposition of several such regions. Permalink: https://doi.org/10.1190/1.9781560802631.ch4FiguresReferencesRelatedDetailsCited byA New 3D Marine Controlled-Source Electromagnetic Modeling Algorithm Based on Two New Types of Quadratic Edge Elements22 February 2023 | Applied Sciences, Vol. 13, No. 5Enhanced detectability using differential fields for marine controlled-source EM data in shallow waters21 February 2023 | Exploration GeophysicsPerformance of light fixed‐wing airborne time‐domain electromagnetic system for mapping the near‐surface cover layer in an alluvial plain context: A numerical study26 December 2022 | Geophysical Prospecting, Vol. 71, No. 2Causes and Characteristics of Electrical Resistivity Variability in Shallow (<4 m) Soils in Taylor Valley, East Antarctica17 February 2023 | Journal of Geophysical Research: Earth Surface, Vol. 128, No. 2Modelling the electromagnetic response of a sphere located in a layered earth9 January 2023 | Exploration GeophysicsA fully finite-element based model-space algorithm for three-dimensional inversion of magnetotelluric data26 December 2022 | Geophysical Journal International, Vol. 233, No. 2A fast and accurate numerical approach for electromagnetic inversionJournal of Computational PhysicsThree‐dimensional inversion of semi‐airborne transient electromagnetic data based on finite element method9 January 2022 | Near Surface Geophysics, Vol. 20, No. 6Spectral element method for 3-D controlled-source electromagnetic forward modelling using unstructured hexahedral meshes11 September 2022 | Geophysical Journal International, Vol. 232, No. 2Magnetic on-time transient electromagnetic method (MoTEM) for imaging magnetic susceptibility20 October 2022 | Geophysical Journal International, Vol. 232, No. 3Smoke rings re-visited: an analytic solution for the transient electric field produced by a vertical magnetic dipole on or in a homogeneous conductive half-space17 January 2022 | Exploration Geophysics, Vol. 53, No. 6Effective 3D-transient electromagnetic inversion using finite-element method with a parallel direct solverHongzhu Cai, Minghong Liu, Junjun Zhou, Jianhui Li, and Xiangyun Hu27 September 2022 | GEOPHYSICS, Vol. 87, No. 6Novel Airborne EM Image Appraisal Tool for Imperfect Forward Modeling14 November 2022 | Remote Sensing, Vol. 14, No. 22Analysis of singular values in a 3D joint inversion problem of MMT and MCSEM data17 October 2022 | Journal of Geophysics and Engineering, Vol. 19, No. 5Geophysical tomography as a tool to estimate the geometry of soil layers: relevance for the reliability assessment of dikes5 September 2021 | Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards, Vol. 16, No. 4Quantification of soil textural and hydraulic properties in a complex conductivity imaging framework: Results from the Wolfsegg slope12 September 2022 | Frontiers in Earth Science, Vol. 10Implicit finite-difference time-domain schemes for TDEM modeling in three dimensionsRoberto Cabrer, Luis A. Gallardo, and Carlos Flores23 August 2022 | GEOPHYSICS, Vol. 87, No. 5Complex Frequency-Shifted Perfectly Matched Layers for 2.5D Frequency-Domain Marine Controlled-Source EM Field Simulations22 March 2022 | Surveys in Geophysics, Vol. 43, No. 4Extension of the regularization technique to controlled-source electromagnetic modeling in general anisotropic conductivity mediaJian Li, Jianxin Liu, Rongwen Guo, Rong Liu, Yongfei Wang, and Hang Chen1 June 2022 | GEOPHYSICS, Vol. 87, No. 4A novel apparent resistivity for land-based controlled-source electromagnetic method27 June 2022 | Journal of Geophysics and Engineering, Vol. 19, No. 3Understanding the effect of 1-D dipping anisotropic conductivity on the response and interpretation of magnetotelluric data2 May 2022 | Geophysical Journal International, Vol. 230, No. 3A dynamic saline groundwater system mapped beneath an Antarctic ice streamScience, Vol. 376, No. 6593Frequency domain electromagnetic induction imaging: An effective method to see inside a capped landfillWaste Management, Vol. 1443D marine controlled-source electromagnetic modeling using an edge-based finite element method with a block Krylov iterative solver5 April 2022 | Open Geosciences, Vol. 14, No. 1Loop Impedance of Single-Turn Circular Coils Lying on Conducting MediaIEEE Transactions on Electromagnetic Compatibility, Vol. 64, No. 2Accelerated 2.5-D inversion of airborne transient electromagnetic data using reduced 3-D meshing25 February 2022 | Geophysical Journal International, Vol. 230, No. 1Insights on electromagnetic scattering by steel casings in surface-to-borehole and borehole-to-surface methodsNestor H. Cuevas1 February 2022 | The Leading Edge, Vol. 41, No. 2Improved Detectivity for Detecting Gas Hydrates Using the Weighted Differential Fields of the Marine Controlled-Source Electromagnetic Data26 January 2022 | Journal of Marine Science and Engineering, Vol. 10, No. 2Extracting meaningful geological and structural features from 1D AEM inversions in conductive terrains15 March 2021 | Exploration Geophysics, Vol. 53, No. 1Electromagnetic Applications in Methane Hydrate Reservoirs1 January 20223-D Large-Scale TEM Modeling Using Restarting Polynomial Krylov MethodIEEE Transactions on Geoscience and Remote Sensing, Vol. 60Distributed electric field sensing using fibre optics in borehole environments15 October 2021 | Geophysical Prospecting, Vol. 70, No. 1Large‐scale detection and quantification of harmful soil compaction in a post‐mining landscape using multi‐configuration electromagnetic induction9 December 2021 | Soil Use and Management, Vol. 38, No. 1Drone-based electromagnetic survey system for geophysical applications7 January 2022 | Open Research Europe, Vol. 2Developing a low-cost frequency-domain electromagnetic induction instrument5 August 2022 | Geoscientific Instrumentation, Methods and Data Systems, Vol. 11, No. 2Modelling the 3D Electromagnetic Wave Equation: Negative Apparent Conductivities and Phase Changes9 July 2022Drone-towed controlled-source electromagnetic (CSEM) system for near-surface geophysical prospecting: on instrument noise, temperature drift, transmission frequency, and survey set-up8 December 2022 | Geoscientific Instrumentation, Methods and Data Systems, Vol. 11, No. 2Electric and magnetic dipole antennas of a directional resistivity logging-while-drilling tool for “look-around” boundary detectionJianbao Fan, Wenxiu Zhang, Wenxuan Chen, Xinghan Li, and Pengfei Liang24 September 2021 | GEOPHYSICS, Vol. 86, No. 6Electromgnetic (EM) Theory28 September 2021Three-dimensional finite-difference modeling of time-domain electromagnetic responses for a large-loop source11 February 2021 | Geosciences Journal, Vol. 25, No. 5Evaluation of three approaches for simulating 3-D time-domain electromagnetic data4 August 2021 | Geophysical Journal International, Vol. 227, No. 3Efficient goal-oriented mesh refinement in 3-D finite-element modelling adapted for controlled source electromagnetic surveys8 July 2021 | Geophysical Journal International, Vol. 227, No. 3Towards an open-source landscape for 3-D CSEM modelling21 June 2021 | Geophysical Journal International, Vol. 227, No. 1Toward high‐resolution agronomic soil information and management zones delineated by ground‐based electromagnetic induction and aerial drone data11 February 2021 | Vadose Zone Journal, Vol. 20, No. 4Electroseismic and seismoelectric responses at irregular interfaces: Possible application to reservoir explorationJournal of Petroleum Science and Engineering, Vol. 202Fast Fourier transform of electromagnetic data for computationally expensive kernels26 April 2021 | Geophysical Journal International, Vol. 226, No. 2The effect of power lines on time-domain airborne electromagnetic dataSeogi Kang, Noah Dewar, and Rosemary Knight11 February 2021 | GEOPHYSICS, Vol. 86, No. 2Transient Close-Range Electromagnetic Field Coupling Between Loop Antennas at the Interface of Dissipative Half-SpacesIEEE Transactions on Antennas and Propagation, Vol. 69, No. 3Geophysical electromagnetics: A retrospective, DISC 2017, and a look forwardDouglas W. Oldenburg, Lindsey J. Heagy, and Seogi Kang2 February 2021 | The Leading Edge, Vol. 40, No. 2Detection of Shallow Buried Water-Filled Goafs Using the Fixed-Loop Transient Electromagnetic Method: A Case Study in Shaanxi, China5 February 2021 | Pure and Applied Geophysics, Vol. 178, No. 2Improved controlled source audio‐frequency magnetotelluric method apparent resistivity pseudo‐sections based on the frequency and frequency–spatial gradients of electromagnetic fields16 January 2021 | Geophysical Prospecting, Vol. 69, No. 2Analytic formulas for complete and incomplete first-order TEM moments below ground in a conductive half-spacePeter K. Fullagar and Ralf Schaa14 December 2020 | GEOPHYSICS, Vol. 86, No. 13D multinary inversion of controlled-source electromagnetic data based on the finite-element method with unstructured meshHongzhu Cai, Zhidan Long, Wei Lin, Jianhui Li, Pinrong Lin, and Xiangyun Hu21 January 2021 | GEOPHYSICS, Vol. 86, No. 1Geological survey of the Seino area in Nobi Plain by drone airborne electromagnetic survey methodBUTSURI-TANSA(Geophysical Exploration), Vol. 74, No. 0Thermal legacy of a large paleolake in Taylor Valley, East Antarctica, as evidenced by an airborne electromagnetic survey3 August 2021 | The Cryosphere, Vol. 15, No. 8Improved linear inversion of low induction number electromagnetic data10 November 2020 | Geophysical Journal International, Vol. 224, No. 3Delineating spatial distribution and thickness of unconsolidated sand along the southwest Lake Michigan shoreline using TEM and ERT geophysical methodsJournal of Great Lakes Research, Vol. 46, No. 6Novel transient multicomponent induction logging method for the determination of dip angle and anisotropy of formationXiyong Yuan, Shaogui Deng, Yiren Fan, Xufei Hu, Zhenguan Wu, Pan Zhang, and Lianyun Cai13 October 2020 | GEOPHYSICS, Vol. 85, No. 6Multi-Line 1D Inversion of Frequency-Domain Helicopter-Borne Electromagnetic Data with Weighted 3D Smoothness Regularization: A Case Study from Northern Iran10 September 2020 | Pure and Applied Geophysics, Vol. 177, No. 11Step‐on versus step‐off signals in time‐domain controlled source electromagnetic methods using a grounded electric dipole28 August 2020 | Geophysical Prospecting, Vol. 68, No. 9Lightning Interferometry Uncertainty, Beam Steering Interferometry, and Evidence of Lightning Being Ignited by a Cosmic Ray Shower5 October 2020 | Journal of Geophysical Research: Atmospheres, Vol. 125, No. 19Parallelized 3-D CSEM Inversion With Secondary Field Formulation and Hexahedral MeshIEEE Transactions on Geoscience and Remote Sensing, Vol. 58, No. 10Meshfree modelling of 2D MT data with RBF-FD and unstructured pointsJianbo Long and Colin G. Farquharson30 September 2020Three-dimensional magnetotelluric numerical simulation of realistic geologic modelsSeyedMasoud Ansari, Ernst Schetselaar, James Craven, and Colin Farquharson28 July 2020 | GEOPHYSICS, Vol. 85, No. 5Effects of metallic system components on marine electromagnetic loop data1 July 2020 | Geophysical Prospecting, Vol. 68, No. 7FDEMtools: a MATLAB package for FDEM data inversion28 December 2019 | Numerical Algorithms, Vol. 84, No. 4De nouvelles perspectives pour les applications des méthodes électromagnétiques basse fréquence en archéologie9 June 2020 | Archimède. Archéologie et histoire ancienne, Vol. 71D electromagnetic response modeling with arbitrary source-receiver geometry based on vector potential and its implementation in MATLABRong Liu, Jianin Liu, Jianxin Wang, Zhuo Liu, and Rongwen Guo4 March 2020 | GEOPHYSICS, Vol. 85, No. 3Coupled magnetic resonance and electrical resistivity tomography: An open-source toolbox for surface nuclear-magnetic resonanceNico Skibbe, Raphael Rochlitz, Thomas Günther, and Mike Müller-Petke8 April 2020 | GEOPHYSICS, Vol. 85, No. 3Probabilistic 1-D Inversion of Frequency-Domain Electromagnetic Data Using a Kalman Ensemble GeneratorIEEE Transactions on Geoscience and Remote Sensing, Vol. 58, No. 5Magnetic Coupling Between Coplanar Filamentary Coil Antennas With Uniform CurrentIEEE Transactions on Electromagnetic Compatibility, Vol. 62, No. 2Electromagnetic modelling with topography on regular grids with equivalent materials13 December 2019 | Geophysical Journal International, Vol. 220, No. 3Time-Domain Electromagnetic-Field Transmission Between Small-Loop Antennas on a Half-Space With Conductive and Dielectric PropertiesIEEE Transactions on Antennas and Propagation, Vol. 68, No. 2Forward and Inverse Modeling of Large Loop TEM Data Over Multi-layer Earth Models2 January 2020Auxiliary Tools for Magnetotellurics23 February 2020Airborne Electromagnetic and Radiometric Peat Thickness Mapping of a Bog in Northwest Germany (Ahlen-Falkenberger Moor)7 January 2020 | Remote Sensing, Vol. 12, No. 2Bayesian joint inversion of controlled source electromagnetic and magnetotelluric data to infer presence of a freshwater aquifer offshore New Jersey11 November 2019 | ASEG Extended Abstracts, Vol. 2019, No. 1Frequency-domain magnetotelluric footprint analysis for 3D earths7 October 2019 | Journal of Geophysics and Engineering, Vol. 16, No. 6Detecting Grounding Grid Orientation: Transient Electromagnetic Approach4 December 2019 | Applied Sciences, Vol. 9, No. 24Dielectric Polarization Studies in Partially Saturated Shale Cores22 November 2019 | Journal of Geophysical Research: Solid Earth, Vol. 124, No. 11Magnetotelluric inversion of one- and two-dimensional synthetic data based on hybrid genetic algorithms10 July 2019 | Acta Geophysica, Vol. 67, No. 53-D marine controlled-source electromagnetic modelling in an anisotropic medium using a Wavelet–Galerkin method with a secondary potential formulation5 July 2019 | Geophysical Journal International, Vol. 219, No. 1The Magnetotelluric Method and Its Application to Understanding Geomagnetically Induced Currents16 September 2019TEM apparent resistivity imaging for grounding grid detection using artificial neural network19 August 2019 | IET Generation, Transmission & Distribution, Vol. 13, No. 17Fast Large-Scale Algorithm for Electromagnetic Wave Propagation in 3D MediaMeshfree modelling of 3-D controlled-source EM data: A new method to treat the singular source termsJianbo Long and Colin G. Farquharson10 August 2019Three-dimensional numerical modeling of gravity and magnetic anomaly in a mixed space-wavenumber domainShikun Dai, Dongdong Zhao, Shunguo Wang, Bin Xiong, Qianjiang Zhang, Kun Li, Longwei Chen, and Qingrui Chen19 June 2019 | GEOPHYSICS, Vol. 84, No. 4Power Density Distribution in Subsurface Fractures Due to an Energized Steel Well-casing SourceG. Didem Beskardes, W. Anderson McAliley, Mohsen Ahmadian, David T. Chapman, Chester J. Weiss, and Jason E. Heath1 July 2019 | Journal of Environmental and Engineering Geophysics, Vol. 24, No. 2Full Waveform Modeling of Transient Electromagnetic Response Based on Temporal Interpolation and Convolution Method25 July 2017 | Pure and Applied Geophysics, Vol. 176, No. 6Ground-source Airborne Time-domain ElectroMagnetic (GATEM) modelling and interpretation method for a rough medium based on fractional diffusion8 March 2019 | Geophysical Journal International, Vol. 217, No. 3Channel Capacity of Magnetic Communication in a General Medium Incorporating Full-Wave Analysis and High-Frequency EffectsIEEE Transactions on Antennas and Propagation, Vol. 67, No. 6Tomographic reconstructions of borehole sections using the radio imaging method at Pyhäsalmi massive sulfide deposit in FinlandArto Korpisalo16 April 2019 | GEOPHYSICS, Vol. 84, No. 3A simple geologic risk-tailored 3D controlled-source electromagnetic multiattribute analysis and quantitative interpretation approachMax A. Meju26 March 2019 | GEOPHYSICS, Vol. 84, No. 3On closed-form expressions for the approximate electromagnetic response of a sphere interacting with a thin sheet — Part 2: Theory in the moment domain, validation, and examplesJacques K. Desmarais12 April 2019 | GEOPHYSICS, Vol. 84, No. 3Geometrical characterization of urban fill by integrating the multi‐receiver electromagnetic induction method and electrical resistivity tomography: A case study in Poitiers, France26 April 2019 | European Journal of Soil Science, Vol. 69Edge-based finite-element modeling of 3D frequency-domain electromagnetic data in general dispersive medium8 February 2019 | Acta Geophysica, Vol. 67, No. 2Mutual Impedance of Thin-Wire Circular Loops in Near-Surface ApplicationsIEEE Transactions on Electromagnetic Compatibility, Vol. 61, No. 2A tool for designing digital filters for the Hankel and Fourier transforms in potential, diffusive, and wavefield modelingDieter Werthmüller, Kerry Key, and Evert C. Slob5 March 2019 | GEOPHYSICS, Vol. 84, No. 2custEM: Customizable finite-element simulation of complex controlled-source electromagnetic dataRaphael Rochlitz, Nico Skibbe, and Thomas Günther19 February 2019 | GEOPHYSICS, Vol. 84, No. 2A Novel Semianalytic Algorithm for Cosine Transform in ATEM MeasurementIEEE Geoscience and Remote Sensing Letters, Vol. 16, No. 2Simultaneous calibration and inversion algorithm for multiconfiguration electromagnetic induction data acquired at multiple elevationsXihe Tan, Achim Mester, Christian von Hebel, Egon Zimmermann, Harry Vereecken, Stefan van Waasen, and Jan van der Kruk21 December 2018 | GEOPHYSICS, Vol. 84, No. 1Heat and Mass Transport in a Vapor‐Dominated Hydrothermal Area in Yellowstone National Park, USA: Inferences From Magnetic, Electrical, Electromagnetic, Subsurface Temperature, and Diffuse CO 2 Flux Measurements19 January 2019 | Journal of Geophysical Research: Solid Earth, Vol. 124, No. 1Combined interpretation of marine controlled source electromagnetic and reflection seismic data in the German North Sea: a case study10 October 2018 | Geophysical Journal International, Vol. 216, No. 1Current Distribution and Input Impedance of a Horizontal Linear Antenna in the Presence of a Layered RegionIEEE Access, Vol. 7A Bayesian Inference Approach to Reduce Uncertainty in Magnetotelluric Inversion: A Synthetic Case StudyJournal of Geoscience and Environment Protection, Vol. 07, No. 02Hydrogeological conceptual model of andesitic watersheds revealed by high-resolution heliborne geophysics14 May 2019 | Hydrology and Earth System Sciences, Vol. 23, No. 5Marine dipole–dipole controlled source electromagnetic and coincident-loop transient electromagnetic experiments to detect seafloor massive sulphides: effects of three-dimensional bathymetry25 September 2018 | Geophysical Journal International, Vol. 215, No. 3Structurally coupled cooperative inversion of magnetic resonance with resistivity soundingsNico Skibbe, Thomas Günther, and Mike Müller-Petke8 October 2018 | GEOPHYSICS, Vol. 83, No. 6Delineation of subsurface variability in clay-rich landslides through spectral induced polarization imaging and electromagnetic methodsEngineering Geology, Vol. 245Mapping Aquifer Systems with Airborne Electromagnetics in the Central Valley of California30 April 2018 | Groundwater, Vol. 56, No. 6Correlation of defect depth with diffusion time of eddy currents for the defects in conducting materials using transient eddy current NDE31 August 2018 | Measurement Science and Technology, Vol. 29, No. 10Transient electromagnetic detection of unexploded ordnance buried in underwater sedimentsSurface NMR Responses of Typical 3-D Water-Bearing Structures Evaluated by a Vector Finite-Element MethodIEEE Transactions on Geoscience and Remote Sensing, Vol. 56, No. 10The mimetic multiscale method for Maxwell’s equationsWenke Wilhelms, Christoph Schwarzbach, Luz Angélica Caudillo-Mata, and Eldad Haber19 July 2018 | GEOPHYSICS, Vol. 83, No. 5Toward subsurface magnetic permeability imaging with electromagnetic induction sensors: Sensitivity computation and reconstruction of measured dataTim Klose, Julien Guillemoteau, François-Xavier Simon, and Jens Tronicke21 August 2018 | GEOPHYSICS, Vol. 83, No. 5Improved upscaling of steel-cased wells through inversionChristoph Schwarzbach and Eldad Haber27 August 2018Understanding Soil and Plant Interaction by Combining Ground-Based Quantitative Electromagnetic Induction and Airborne Hyperspectral Data8 August 2018 | Geophysical Research Letters, Vol. 45, No. 153D transient electromagnetic modeling using a shift-and-invert Krylov subspace method26 April 2018 | Journal of Geophysics and Engineering, Vol. 15, No. 4An efficient 2D inversion scheme for airborne frequency-domain dataTue Boesen, Esben Auken, Anders Vest Christiansen, Gianluca Fiandaca, Casper Kirkegaard, Andreas Aspmo Pfaffhuber, and Malte Vöge30 May 2018 | GEOPHYSICS, Vol. 83, No. 4CSAMT Static Shift Recognition and Correction Using Radon TransformationIEEE Geoscience and Remote Sensing Letters, Vol. 15, No. 7A finite-element time-domain forward solver for electromagnetic methods with complex-shaped loop sourcesJianhui Li, Xushan Lu, Colin G. Farquharson, and Xiangyun Hu9 March 2018 | GEOPHYSICS, Vol. 83, No. 3Particle swarm optimization for simultaneous analysis of magnetotelluric and time-domain electromagnetic dataAlessandro Santilano, Alberto Godio, and Adele Manzella5 April 2018 | GEOPHYSICS, Vol. 83, No. 3Removal of galvanic distortion effects in 3D magnetotelluric data by an equivalent source techniqueWenwu Tang, Yaoguo Li, Douglas W. Oldenburg, and Jianxin Liu8 February 2018 | GEOPHYSICS, Vol. 83, No. 2Joint inversion of seismic traveltime and frequency-domain airborne electromagnetic data for hydrocarbon explorationJide Nosakare Ogunbo, Guy Marquis, Jie Zhang, and Weizhong Wang8 February 2018 | GEOPHYSICS, Vol. 83, No. 2Application of 3D marine controlled-source electromagnetic finite-element forward modeling to hydrocarbon exploration in the Flemish Pass Basin offshore Newfoundland, CanadaMichael W. Dunham, SeyedMasoud Ansari, and Colin G. Farquharson8 February 2018 | GEOPHYSICS, Vol. 83, No. 2Water Table Uncertainties due to Uncertainties in Structure and Properties of an Unconfined Aquifer29 August 2017 | Groundwater, Vol. 56, No. 2A highly accurate analytical solution for the surface fields of a short vertical wire antenna lying on a multilayer ground4 May 2017 | Waves in Random and Complex Media, Vol. 28, No. 1Application of geoelectric method for groundwater exploration from surface (A literature study)An oversampling technique for the multiscale finite volume method to simulate electromagnetic responses in the frequency domain18 April 2017 | Computational Geosciences, Vol. 21, No. 5-6Bayesian inversion of seismic and electromagnetic data for marine gas reservoir characterization using multi-chain Markov chain Monte Carlo samplingJournal of Applied Geophysics, Vol. 1473D marine magnetotelluric inversion: A hybrid impedance and direct-field approachLutz Mütschard, Ketil Hokstad, Torgeir Wiik, and Bjørn Ursin6 October 2017 | GEOPHYSICS, Vol. 82, No. 6Fast 3D multichannel deconvolution of electromagnetic induction loop-loop apparent conductivity data sets acquired at low induction numbersJulien Guillemoteau, Niels Bøie Christensen, Bo Holm Jacobsen, and Jens Tronicke19 October 2017 | GEOPHYSICS, Vol. 82, No. 6An analytic solution for numerical modeling validation in electromagnetics: the resistive sphere2 August 2017 | Geophysical Journal International, Vol. 211, No. 2A direct comparison of EMI data and borehole data on a 1000 ha data setGeoderma, Vol. 303Three-Dimensional Inversion of GREATEM Data: Application to GREATEM Survey Data From Kujukuri Beach, JapanIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol. 10, No. 10Transient electromagnetic search engine for real-time imagingJide Nosakare Ogunbo, Jie Zhang, and Xiong Zhang24 July 2017 | GEOPHYSICS, Vol. 82, No. 5Inversion of airborne geophysics over the DO-27/DO-18 kimberlites — Part 2: ElectromagneticsDominique Fournier, Seogi Kang, Michael S. McMillan, and Douglas W. Oldenburg7 June 2017 | Interpretation, Vol. 5, No. 3Three-dimensional controlled-source EM modeling with radial basis function-generated finite differences: A meshless approachJianbo Long and Colin Farquharson17 August 2017EM Exploration Complete Session17 August 2017High-Performance Parallel Solver for Integral Equations of Electromagnetics Based on Galerkin Method3 March 2017 | Mathematical Geosciences, Vol. 49, No. 6Configuration Detection of Substation Grounding Grid Using Transient Electromagnetic MethodIEEE Transactions on Industrial Electronics, Vol. 64, No. 8Inductive electromagnetic data interpretation using a 3D distribution of 3D magnetic or electric dipolesMichal Kolaj and Richard Smith25 May 2017 | GEOPHYSICS, Vol. 82, No. 4Transient VRM Response From a Large Circular Loop Over a Conductive and Magnetically Viscous Half-SpaceIEEE Transactions on Geoscience and Remote Sensing, Vol. 55, No. 7A multi-domain decomposition-based Fourier finite element method for the simulation of 3D marine CSEM measurements25 January 2017 | Computational Geosciences, Vol. 21, No. 3Accurate Interpolation at Receiver Positions: A Novel Method for Frequency-Domain Marine CSEM Finite-Difference Modelling31 March 2017 | Pure and Applied Geophysics, Vol. 174, No. 5Full‐wave analytical explicit expressions for the surface fields of an electrically large horizontal circular loop antenna placed on a layered ground21 April 2017 | IET Microwaves, Antennas & Propagation, Vol. 11, No. 6An exact solution for the transient electromagnetic field around a finite-length transmitterEirik G. Flekkøy and Marcus Vicinius Carneiro6 February 2017 | GEOPHYSICS, Vol. 82, No. 23D vector finite-element electromagnetic forward modeling for large loop sources using a total-field algorithm and unstructured tetrahedral gridsJianhui Li, Colin G. Farquharson, and Xiangyun Hu8 November 2016 | GEOPHYSICS, Vol. 82, No. 1Note on: ‘EMDPLER: A F77 program for modeling the EM response of dipolar sources over the non-magnetic layer earth models’ by N.P. Singh and T. Mogi, Computers & Geosciences 36 (2010) 430–440Computers & Geosciences, Vol. 98Time domain electromagnetic 1D inversion using genetic algorithm and particle swarm optimizationImplementation of hybrid optimization for time domain electromagnetic 1D inversionSemi-airborne Model for Radiation From Large Grounded Wire AntennaIEEE Antennas and Wireless Propagation LettersEvaluation of a rapid hybrid spectral-spatial domain 3D forward-modeling approach for loop-loop electromagnetic induction quadrature data acquired in low-induction-number environmentsJulien Guillemoteau and Jens Tronicke23 September 2016 | GEOPHYSICS, Vol. 81, No. 6Transient electromagnetic fields of a buried horizontal magnetic dipoleAndrei Swidinsky and Misac Nabighian26 October 2016 | GEOPHYSICS, Vol. 81, No. 6Extracting geoelectrical maps from vintage very-low-frequency airborne data, tipper inversion, and interpretation: A case study from northern SwedenSayyed Mohammad Abtahi, Laust Börsting Pedersen, Jochen Kamm, and Thomas Kalscheuer3 August 2016 | GEOPHYSICS, Vol. 81, No. 5A hybrid finite-difference and integral-equation method for modeling and inversion of marine controlled-source electromagnetic dataDaeung Yoon, Michael S. Zhdanov, Johan Mattsson, Hongzhu Cai, and Alexander Gribenko27 July 2016 | GEOPHYSICS, Vol. 81, No. 5Three-dimensional vector finite-element electromagnetic forward modeling for large loop sources with complex shapesJianhui Li and Colin Farquharson1 September 2016Subsurface mapping with airborne electromagnetics in the Central Valley of CaliforniaRosemary Knight, Ryan Smith, Ted Asch, Jared Abraham, James Cannia, and Andrea Viezzoli1 September 2016Multiple body parametric inversion of frequency- and time-domain airborne electromagneticsMichael McMillan, Christoph Schwarzbach, Eldad Haber, and Douglas Oldenburg1 September 2016Breaking through the 25/30 Hz barrier: Lowering the base frequency of the HELITEM airborne EM systemGraham Konieczny, Adam Smiarowski, and Phillip Miles1 September 2016Electromagnetic Methods Complete Session1 September 2016Mining and Geothermal Complete Session1 September 2016Forward modeling for “earth-ionosphere” mode electromagnetic field3