Results 21 to 30 of about 228 (134)
Advances in Civil Engineering, 2019 Due to the influence of mining technology, some coal mines will leave mined-out areas (or goafs) in the rock mass after mining. If the distribution law and influence scope of mined-out areas cannot be accurately explored and controlled, it will bring ...
Xiao Luo +4 more
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Three-component detection technology of down-hole TEM for hidden geological anomalies in coal mines
Meitan kexue jishuTo meet the geological requirements for detailed exploration of concealed anomalies in coal mines and to accurately delineate and interpret hidden water hazards around boreholes, a three-component geological anomaly localization technique using borehole ...
Xiaowei GAO
doaj +1 more source
Calculation of borehole transient electromagnetic apparent resistivity and dip in anisotropic medium
河南理工大学学报. 自然科学版In the fields of resource exploration and development， as well as geological disaster prevention and control， the electromagnetic method of borehole is an effective tool for monitoring subsurface fluid distribution， particularly in evaluating the ...
ZHAO Ning +4 more
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Permafrost and Periglacial Processes, Volume 37, Issue 3, Page 306-322, July/September 2026.ABSTRACT Under continued climate warming, understanding present‐day permafrost distribution and the controls on ground thaw are critical for predicting permafrost thaw trajectories and associated implications. This study presents a high‐resolution investigation of permafrost extent and active layer thickness (ALT) across a coniferous forested hillslope
Alana Muenchrath +2 more
wiley +1 more source
Permafrost and Periglacial Processes, Volume 37, Issue 3, Page 517-534, July/September 2026.ABSTRACT The existence of permafrost was explored at tropical latitude on Nevado Coropuna (southern Peruvian Andes) using a combination of ground‐penetrating radar (GPR) and vertical electrical sounding (VES) in order to strengthen the mutual validation of data processing and interpretation.
Velnia Chacca +6 more
wiley +1 more source
Groundwater, Volume 64, Issue 4, Page 405-421, July/August 2026.Marine electrical resistivity tomography (ERT) is applied to characterize point‐source submarine groundwater discharge (PSGD) along NW Yucatán. ERT observations and forward modeling constrain conduit detectability under varying hydrogeological conditions.
Mariana Gómez‐Nicolás +6 more
wiley +1 more source
Frontiers in Earth ScienceTransient electromagnetic method (TEM) is widely used in coalfield hydrogeological exploration and goaf investigation. However, given the limitations of the method, the vertical resolution of ground TEM is somewhat low for effectively detecting water ...
Yang Yang +4 more
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MineralsThe surface–borehole transient electromagnetic method (TEM) employs surface-based transmission and downhole reception to collect electromagnetic data. This configuration offers distinct advantages over traditional TEM approaches by effectively attenuating surface electromagnetic noise and cultural interference, leading to enhanced signal strength and ...
Haojin Li +4 more
openaire +1 more source
A geophysical investigation of the Roter Kamm impact crater, Namibia
Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1386-1398, July 2026.Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus +6 more
wiley +1 more source
Meitan kexue jishuThe efficient and intelligent production in coal mining necessitates more precise detection of hidden underground disaster-causing factors. Rapid excavation faces challenges in the accuracy and efficiency of detecting coal-rock interfaces, geological ...
Ping LI +5 more
doaj +1 more source