A parallel adaptive finite-element approach for 3-D realistic controlled-source electromagnetic problems using hierarchical tetrahedral grids

Z Liu, Z Ren, H Yao, J Tang, X Lu… - Geophysical Journal …, 2023 - academic.oup.com
To effectively and efficiently interpret or invert controlled-source electromagnetic (CSEM)
data which are recorded in areas with the kind of complex geological environments and …

3D finite-volume time-domain modeling of geophysical electromagnetic data on unstructured grids using potentials

X Lu, CG Farquharson - Geophysics, 2020 - pubs.geoscienceworld.org
Unstructured grids are capable of faithfully representing real-life geologic models and
topography with relatively few mesh cells. We have developed a finite-volume solution to the …

Surface geometry inversion of transient electromagnetic data

X Lu, CG Farquharson, P Lelièvre - Geophysics, 2024 - library.seg.org
We investigate an emerging method called surface geometry inversion (SGI) for the
inversion of transient electromagnetic (TEM) data. Conventional minimum-structure …

Massively parallel modeling of electromagnetic field in conductive media: An MPI-CUDA implementation on Multi-GPU computers

X Tu, EJ Bowles-Martinez, A Schultz - Computers & Geosciences, 2024 - Elsevier
Numerical modeling of electromagnetic (EM) fields in a conductive marine environment is
crucial for marine EM data interpretation. During marine controlled-source electromagnetic …

Three-dimensional full-time transient electromagnetic modeling using restarting polynomial Krylov subspace model order reduction method

JM ZHOU, X **g, KL LU, WT LIU, X LI - Chinese Journal of Geophysics, 2023 - en.dzkx.org
Transient electromagnetic (TEM) modeling is a challenge in terms of memory and computing
time. TEM responses are affected by the full transmitting-current waveforms and needs to be …

3-D full-time TEM modeling using shift-and-invert Krylov subspace method

J Zhou, W Liu, X Li, Y Qi, Z Qi - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
The 3-D time-domain electromagnetic (TEM) modeling is computationally expensive. Shift-
and-invert (SAI) Krylov subspace technique has proved efficient for the modeling of OFF …

Accelerating the frequency domain controlled-source electromagnetic data inversion using rational Krylov subspace algorithm

J Liu, Z Ren, X **ao, J Tang… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Controlled-source electromagnetic (CSEM) method is crucial for detecting and locating
underground anomalies and structures. However, it is challenging to interpret the field data …

Solution of large-scale 3D controlled-source electromagnetic modeling problem using efficient iterative solvers

C Qiu, C Yin, Y Liu, X Ren, H Chen, T Yan - Geophysics, 2021 - library.seg.org
With geophysical surveys evolving from traditional 2D to 3D models, the large volume of
data adds challenges to inversion, especially when aiming to resolve complex 3D structures …

Research progress in three-dimensional forward modeling for the transient electromagnetic method

J Chang, J Xue, Q Meng, H Li - Journal of Geophysics and …, 2024 - academic.oup.com
The transient electromagnetic (TEM) method is a valuable tool for detecting the structure of
underground geological targets. However, TEM survey environments are complex and …

Source decoupling and model order reduction for 3-D full-time transient electromagnetic modeling

J Zhou, Y Wen, X **g, K Lu, W Liu… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Krylov subspace projection model order reduction technique for matrix function has proved
efficient for the modeling of 3-D OFF-time transient electromagnetic (TEM) data. However …