Development of the inversion method for transient electromagnetic data

G Xue, H Li, Y He, J Xue, X Wu - IEEE Access, 2020 - ieeexplore.ieee.org
Transient electromagnetic method (TEM) is a geophysical tool to obtain resistivity
distribution in the subsurface. Combining with the resistivity property of typical rocks, the …

Map** water-abundant zones using transient electromagnetic and seismic methods when tunneling through fractured granite in the Qinling Mountains, China

B Liu, K Fan, L Nie, X Li, F Liu, L Li, J Wang… - …, 2020 - pubs.geoscienceworld.org
Severe water inrush currently halts the excavation of the Qinling Water Transportation
Tunnel and has even stopped tunneling. Based on the geologic conditions of the …

A precise integration transform algorithm for transformation from the transient electromagnetic diffusion field into the pseudo wave field

KL Lu, X LI, ZP QI, YN FAN, JM ZHOU, WH LI… - Chinese Journal of …, 2021 - en.dzkx.org
The existing transient electromagnetic interpretation and inversion methods focus on the
resistivity parameters, which are difficult to give accurate geological structure information. To …

A self-adaptive algorithm of inverse wavefield transform for the vertically magnetic components of the loop-source transient electromagnetic data

K Fan, J Guo, G Wang, L Xu, K Lu, S Sun… - … and Remote Sensing …, 2024 - ieeexplore.ieee.org
We present a self-adaptive algorithm of inverse wavefield transform for the vertically
magnetic components of the loop-source transient electromagnetic method (TEM) data to …

Inverse wavefield transform of vertical magnetic signal of galvanic source TEM when slowing down pseudo-wavefield velocity

FAN KeRui, W Gang, LU KaiLiang, Z **n… - Chinese Journal of …, 2023 - dsjyj.com.cn
Extracting the Pseudo-wavefield by inverse wavefield transform from the Transient
Electromagnetic Method (TEM) signal is an effective way to provide structural information of …

Analysis on stable imaging and inverse algorithm for artificial source EM data

X Luan, J Xue, B Chen, X Wu… - Journal of Geophysics and …, 2024 - academic.oup.com
The inversion of artificial source electromagnetic (EM) method data fundamentally involves
constructing a mathematical relationship between observable data and geological …

Full waveform inversion of transient electromagnetic data in the time domain

J Xue, J Cheng, LJ Gelius, X Wu… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Quasi-seismic imaging is a popular form of electromagnetic (EM) imaging technology. In
most cases, it is considered that it will yield more obvious layered characteristics if the EM …

TEM pseudo-wave field extractions using a modified algorithm

X Li, G Xue, Q Zhi, H Li… - … of Environmental and …, 2018 - pubs.geoscienceworld.org
The migration of the transient electromagnetic method (TEM) has been a research topic for
decades. The method, which uses the mathematical q transform to perform imaging in the …

Transient electromagnetic pseudo wavefield imaging based on the sweep-time preconditioned precise integration algorithm

K Lu, X Li, J Zhou, K Fan - Journal of Applied Geophysics, 2023 - Elsevier
The solution of the transient electromagnetic pseudo wavefield is a seriously ill-posed
problem, and conventional methods do not facilitate a stable and high-precision solution …

Full waveform inversion for the borehole transient electromagnetic pseudo seismic data

J Xue, J Cheng, Y Han - Chinese Journal of Geophysics, 2024 - en.dzkx.org
The borehole transient electromagnetic method is arranged in the drill hole with transmitting
and receiving devices, which are closer to the target body and suitable for finely detecting …