[HTML][HTML] 3D forward modeling and response characteristics of low-resistivity overburden of the CFS-PML absorbing boundary for ground-well transient electromagnetic …

L Zhao, M Gao, N Lei, H Duan, W Qiu… - International Journal of …, 2023 - Elsevier
This study used the stable and convergent Dufort-Frankel method to differentially discretize
the diffusion equation of the ground-well transient electromagnetic secondary field. The …

[HTML][HTML] 基于吸收边界条件的瞬变电磁法三维矢量有限元快速正演

张永超, 王光杰, 李宏杰, 廉玉广, 李文, 邱浩, 牟义 - 地球物理学报, 2021 - html.rhhz.net
瞬变电磁法的三维有限元正演通常采用齐次边界条件, 为满足该边界条件, 需要构建较大尺寸的
模型, 这降低了正演问题的求解速度. 针对该问题, 本文采用吸收边界条件代替齐次边界条件 …

Response and application of full-space numerical simulation based on finite element method for transient electromagnetic advanced detection of mine water

C Guo, T Tan, L Ma, S Chang, Y Chen, K Zhao - Sustainability, 2022 - mdpi.com
The issue of water hazards has led to the restriction of safe and efficient coal mine
production in China. The transient electromagnetic method (TEM) is one of the most effective …

Effects of electrical anisotropy on long-offset transient electromagnetic data

Y Liu, P Yogeshwar, X Hu, R Peng… - Geophysical Journal …, 2020 - academic.oup.com
Electrical anisotropy of formations has been long recognized by field and laboratory
evidence. However, most interpretations of long-offset transient electromagnetic (LOTEM) …

Improved adaptive thin-layer inversion for semi-airborne transient electromagnetic method

Y Xian, R Lan, Y Liu, D Li, J Yang… - Journal of Geophysics …, 2023 - academic.oup.com
To improve the resolution of electromagnetic inversion for thin layers, electromagnetic one-
dimensional inversion was studied. The smooth conductivity model produced by Occam's …

Three-Dimensional Inversion of Time-Domain Electromagnetic Data Using Various Loop Source Configurations

Y Liu, P Yogeshwar, R Peng, X Hu… - … on Geoscience and …, 2024 - ieeexplore.ieee.org
We present a multidimensional inversion methodology for loop source time-domain
electromagnetic data. The developed algorithm is a robust, efficient, and user-oriented tool …

Study on the shielding effect of low resistance body when using transient electromagnetic to detect urban underground space

Y An, W Yong, C Liu, Z Li, X Zhang, L Du - Plos one, 2023 - journals.plos.org
Transient electromagnetic Method (TEM) is an efficient geophysical detection technology
suitable for detection of urban near-surface space. However, its detection results are well …

Three-dimensional simulation and characterization of airborne transient electromagnetic response in rough media

R Gao, C Yin, H Liang, Y Liu, L Wang, Y Su, B Xiong - Geophysics, 2024 - library.seg.org
In fractal, porous, and cranny rough media, the diffusion of the electromagnetic (EM) field
differs from that in piecewise smooth media. This phenomenon is known as anomalous …

Three-dimensional forward modeling and quantitative assessment of electrode offset effects in ERT

K Suo, M Zhao, M Jia, W Liu, S Chen, G Zhao - Heliyon, 2024 - cell.com
Resistivity data has important applications in geophysical exploration, but the impact of
electrode offsets on resistivity response characteristics remains unclear. This study aims to …

[HTML][HTML] 基于非结构网格有限元的三维井地电阻率法任意各向异性正演模拟

熊治涛, 唐新功, 李丹丹 - 地球物理学报, 2023 - dzkx.org
地层介质的电各向异性增加了井地电阻率法响应的复杂性, 开展基于电各向异性介质模型的井地
电阻率法响应规律研究对于正确解释各向异性显著地区的观测数据特征至关重要 …