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Iterative solution methods for 3D controlled-source electromagnetic forward modelling of geophysical exploration scenarios
We develop an efficient and robust iterative framework suitable for solving the linear system of equations resulting from the spectral element...
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Meshing strategies for 3d geo-electromagnetic modeling in the presence of metallic infrastructure
In 3D geo-electromagnetic modeling, an adequate discretisation of the modeling domain is crucial to obtain accurate forward responses and reliable...
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Modern Methods of Airborne Electromagnetic Survey
AbstractAirborne electromagnetic methods are characterized in detail. A classification of airborne electromagnetic systems is presented. Modern...
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Evaluation of internal void related defects in reinforced concrete slab using electromagnetic wave properties
This study aims to develop a damage-detection algorithm based on the electromagnetic wave properties inside a reinforced concrete structure. The...
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Polarization of a High-Frequency Electromagnetic Field in the Tensor CSRMT Method
Abstract —The paper considers different modes of producing a “rotating” field for the implementation of the tensor CSRMT method. We analyzed changes...
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Forward modelling of geophysical electromagnetic data on unstructured grids using an adaptive mimetic finite-difference method
While the mimetic finite-difference method shares many similarities with the finite-element and finite-volume methods, it has the advantage of...
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3-D transient electromagnetic inversion based on explicit finite-difference forward modeling
We propose a 3-D transient electromagnetic inversion method based on explicit finite-difference forward modeling. For forward modeling, we calculate...
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Using Pseudo-Random Code Sequences for Improving the Efficiency of Near-Field Transient Electromagnetic Sounding on the Arctic Shelf
Abstract —Numerical modelling was done with the aim to evaluate the efficiency of applying pseudo-random sequences of current pulses (pseudo-noise...
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Study on the Mechanism of Rock Damage Under Microwave and Laser Irradiation Through Multiscale and Multiphysics Numerical Modelling
High-energy microwaves and lasers are applied to assist mechanical rock breaking due to their advantages in rapid thermal damage to hard rocks....
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Appraisal of a galvanic-source transient electromagnetic method for hazardous water structures beyond tunnel sidewall
In tunnel construction, hazardous water structures pose significant risks. The transient electromagnetic method (TEM) is widely used for advanced...
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The influence of layer and voxel geological modelling strategy on groundwater modelling results
Reliable groundwater model predictions are dependent on representative models of the geological environment, which can be modelled using several...
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A review of seismo-electromagnetic research in China
The seismo-electromagnetic (EM) method is an important geophysical method that plays a major role in the observation of seismic anomalies related to...
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Uncertainty Quantification in Geostatistical Modelling of Saltwater Intrusion at a Coastal Aquifer System
Groundwater resources in Mediterranean coastal aquifers are under several threats including saltwater intrusion. This situation is exacerbated by the...
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A marine gravimeter based on electromagnetic dam** and its tests in the South China Sea
A new gravity sensor based on electromagnetic dam** for the JMGrav marine gravimeter is presented. The new gravity sensor considered the advanced...
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Grounded electrical source ground–airborne transient electromagnetic modelling with fictitious wave field methods
The finite-difference time domain (FDTD) method is widely used in ground–airborne transient electromagnetic modelling. Generally, this method offers...
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Optimising landslide initiation modelling with high-resolution saturation prediction based on soil moisture monitoring data
It has been widely recognised that the degree of soil wetness before precipitation events can be decisive for whether or not shallow rainfall-induced...
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Volcanic Ash Modelling of Barren Island Volcano, India, Using Satellite Data
Active volcanoes are a regular occurrence in nature and are well known for the risk and devastation they cause when they erupt. In India, Barren...
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Electromagnetic Applications in Methane Hydrate Reservoirs
Marine electromagnetic methods provide useful and independent measures for the identification and quantification of submarine gas hydrates. The...
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Analysis of 3D anisotropic characteristics for E-Ex wide-field electromagnetic method
The anisotropy of subsurface media makes it complex to process and interpret electromagnetic survey data, particularly in areas of sedimentary rock...
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Modelling stage–discharge relationship of Himalayan river using ANN, SVM and ANFIS
Modelling the stage–discharge relationship is vital for precise discharge estimation, which is essential in reservoir operation, design of hydraulic...
