A review of block Krylov subspace methods for multisource electromagnetic modelling
Practical applications of controlled-source electromagnetic (EM) modelling require solutions
for multiple sources at several frequencies, thus leading to a dramatic increase of the …
for multiple sources at several frequencies, thus leading to a dramatic increase of the …
3-D inversion of airborne electromagnetic data parallelized and accelerated by local mesh and adaptive soundings
Airborne electromagnetic (AEM) methods are highly efficient tools for assessing the Earth's
conductivity structures in a large area at low cost. However, the configuration of AEM …
conductivity structures in a large area at low cost. However, the configuration of AEM …
Effective 3D-transient electromagnetic inversion using finite-element method with a parallel direct solver
The correct interpretation of time-domain or transient electromagnetic (TEM) data relies on
effective inversion techniques. Herein, we have developed an effective 3D-TEM inversion …
effective inversion techniques. Herein, we have developed an effective 3D-TEM inversion …
基于FCM 聚类算法的二维RMT 电阻率与介电常数联合反演
易柯， 张志勇， 李曼， 原源， 郭一豪， 周峰 - 地球物理学报, 2022 - dzkx.org
射频大地电磁(RMT) 是新兴的浅地表勘探法, 其工作频段(10 kHz~ 1 MHz) 处于音频大地电磁(
AMT) 与探地雷达(GPR) 之间, 随频率的增加, 位移电流对RMT 观测的影响逐渐增大 …
AMT) 与探地雷达(GPR) 之间, 随频率的增加, 位移电流对RMT 观测的影响逐渐增大 …
Gauss-Newton inversion with node-based basis functions: Application to imaging of seabed minerals in an area with rough bathymetry
R Mittet, A Avdeeva - Geophysics, 2024 - library.seg.org
ABSTRACT The Gauss-Newton method has good convergence properties when used for
the solution of seismic and electromagnetic inversion problems. One main issue is the high …
the solution of seismic and electromagnetic inversion problems. One main issue is the high …
Hierarchical matrix approximations of Hessians arising in inverse problems governed by PDEs
Hessian operators arising in inverse problems governed by partial differential equations
(PDEs) play a critical role in delivering efficient, dimension-independent convergence for …
(PDEs) play a critical role in delivering efficient, dimension-independent convergence for …
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 …
and-invert (SAI) Krylov subspace technique has proved efficient for the modeling of OFF …
1-D inversion of GREATEM data by supervised descent learning
In this letter, the application of the supervised descent method (SDM) for solving controlled-
source electromagnetic inversion is studied. The descent direction in each iteration step of …
source electromagnetic inversion is studied. The descent direction in each iteration step of …
A model reduction approach to numerical inversion for a parabolic partial differential equation
We propose a novel numerical inversion algorithm for the coefficients of parabolic partial
differential equations, based on model reduction. The study is motivated by the application …
differential equations, based on model reduction. The study is motivated by the application …
Research progress on marine transient electromagnetic method
J ZHOU, X LI, Z QI - Progress in Geophysics, 2016 - en.dzkx.org
Marine transient electromagnetic method has been much attention when the hydrocarbon
exploration turning to shallow water. This method has higher resolution for characterizing …
exploration turning to shallow water. This method has higher resolution for characterizing …