Results 11 to 20 of about 284 (138)

Key Technologies for Surface-Borehole Transient Electromagnetic Systems and Applications

Minerals (Basel, Switzerland)
The nonferrous metal mines in China are rapidly depleting due to years of mining, and it has become difficult to identify new mineral resources in the periphery of the old mining area. In order to deal with this situation, advanced technologies and equipment must be deployed.
Xingbing Xie, Liangjun Yan, Yurong Mao   +2 more
exaly   +3 more sources

Characterization of Surface–Borehole Transient Electromagnetic Response in Electrical Anisotropic Media

Minerals, 2023
When encountering sedimentary rocks with obvious laminations or fracture development zones, the conductivity of the conductive medium in different directions will change significantly, and the subsurface medium will exhibit macroscopic conductivity anisotropy.
Haojin Li, Yurong Mao, Xinyu Wang, Liangjun Yan, Lei Zhou   +4 more
openaire   +2 more sources

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

International Journal of Mining Science and Technology, 2023
This study used the stable and convergent Dufort-Frankel method to differentially discretize the diffusion equation of the ground-well transient electromagnetic secondary field.
Lijuan Zhao, Mingzhong Gao, Nengzhong Lei, Hongfei Duan, Weizhong Qiu, Zhaoying Chen   +5 more
doaj   +2 more sources

Three-Dimensional Dual-Mesh Inversions for Sparse Surface-to-Borehole TEM Data

Remote Sensing, 2023
The surface-to-borehole transient electromagnetic (SBTEM) method can provide images at higher resolution for deep earth because its receivers are close to targets.
Luyuan Wang, Yunhe Liu, Changchun Yin, Yang Su, Xiuyan Ren, Bo Zhang   +5 more
doaj   +2 more sources

Transient Electromagnetic Monitoring of Permafrost: Mathematical Modeling Based on Sumudu Integral Transform and Artificial Neural Networks

Mathematics
Due to the ongoing global warming on the Earth, permafrost degradation has been extensively taking place, which poses a substantial threat to civil and industrial facilities and infrastructure elements, as well as to the utilization of natural resources ...
Viacheslav Glinskikh, Oleg Nechaev, Igor Mikhaylov, Marina Nikitenko, Kirill Danilovskiy   +4 more
doaj   +2 more sources

Forward Modeling Analysis in Advanced Exploration of Cross-Hole Grounded-Wire-Source Transient Electromagnetic Method

Applied Sciences
To address the challenge of accurately detecting hidden water inrush hazards ahead of working faces, a cross-hole transient electromagnetic (TEM) method utilizing a grounded-wire source is proposed.
Jiao Zhu, Zhihai Jiang, Maofei Li, Zhonghao Dou, Zhaofeng Gao   +4 more
doaj   +2 more sources

3D Forward Simulation of Borehole-Surface Transient Electromagnetic Based on Unstructured Finite Element Method

Minerals
The time-domain electromagnetic method has been widely applied in mineral exploration, oil, and gas fields in recent years. However, its response characteristics remain unclear, and there is an urgent need to study the response characteristics of the borehole-surface transient electromagnetic(BSTEM) field.
Jiayi Liu, Tianjun Cheng, Lei Zhou, Xinyu Wang, Xingbing Xie   +4 more
openaire   +2 more sources

Evaluation of the Capabilities of Grounded-Wire Source Surface-Borehole Transient Electromagnetic Detection in Complex Geological Settings

Minerals
The surface-borehole transient electromagnetic method exhibits significant advantages in identifying deep targets, as its closer distance to subsurface targets results in more pronounced effective anomalies when compared to surface-based techniques.
Xianxiang Wang, Wanting Ma
openaire   +2 more sources

Anomaly Field Extraction Based on Layered-Earth Model and Equivalent Eddy Current Inversion: A Case Study of Borehole zk506 in Baishiquan, Xinjiang

Sensors
Based on the concept of an equivalent eddy current, anomaly field inversion provides an efficient and rapid inversion method for borehole transient electromagnetic (BHTEM) measurements. It enables the utilization of the equivalent eddy current to rapidly
Yi Yang, Jie Zhang, Qingquan Zhi, Yang Ou, Xingchun Wang, Lei Wang, Junjie Wu, Xiaohong Deng   +7 more
doaj   +2 more sources

Joint interpretation of magnetic, transient electromagnetic, and electric resistivity tomography data for landfill characterization and contamination detection

Scientific Reports
Geophysical techniques have become increasingly crucial for characterizing landfills, offering noninvasive methods for subsurface exploration and contamination assessment.
Ismael M. Ibraheem, Pritam Yogeshwar, Rainer Bergers, Bülent Tezkan   +3 more
doaj   +2 more sources