Results 31 to 40 of about 603 (176)

Analysis of coal thickness identification and imaging accuracy of mine directional borehole radar

Meitan xuebao
The geological structure of coal mines in China is complex, and precise detection of coal seam thickness and orientation is crucial for intelligent and safe mining operations.
Xianlei XU, Jinglin LI, Shilong CAO, Haoran ZHANG, Zhenghan YUAN   +4 more
doaj   +1 more source

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson, Philip P. Bonnaventure, Nick C. Noad, Madeleine C. Garibaldi, Rabecca Thiessen, Will Kochtitzky   +5 more
wiley   +1 more source

Internal Permafrost Structure of Geomorphologically Distinct Palsas in Northern Sweden Revealed by Quasi‐3D ERT

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Permafrost in northern peatlands occurs within individual palsas or extensive peat plateaus and controls local carbon storage. These permafrost landforms are complex, and their internal structure remains poorly understood. We used quasi‐3D electrical resistivity tomography (ERT) measurements, supported by UAV‐LiDAR topography, frost probing ...
Cas Renette, Mirko Pavoni, Mauricio Fuentes, Erik Sturkell, Mats Olvmo, Heather Reese   +5 more
wiley   +1 more source

Modelling Patterns of Past Inundation Processes Combining Geoarchaeology and Morphometric Hydrological Analysis in the Shashe‐Limpopo Basin, South Africa

Archaeometry, EarlyView.
ABSTRACT Riverine and valley systems across the globe have been central to the development of past urban centres. By AD 900, the Shashe and Limpopo Rivers seem to have facilitated the interaction and integration of early farming communities in southern Africa. This paper focuses on the application of geoarchaeological perspectives made available by the
B. S. Nxumalo
wiley   +1 more source

Key technologies of borehole comprehensive geophysical prospecting for advanced detection in directional long drilling of rapid excavation working face

Meitan kexue jishu
The 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, Rong WEI, Tao FAN, Rui ZHAO, Bici JIANG, Xiaochao TIAN   +5 more
doaj   +1 more source

Palaeoenvironmental and climatic changes from the lateglacial of the Saalian to the Late Weichselian in central Poland: a multiproxy study from Józefów

Boreas, EarlyView.
Józefów site is a case study which provides a detailed record of environmental and climate changes and confirms the main traces of the landscape morphogenesis of the Late Pleistocene established in central‐eastern Europe. This study presents a multiproxy reconstruction of palaeoenvironment under variable climatic conditions from the retreat of the ...
Aleksandra Majecka, Jacek Forysiak, Ryszard Borówka, Andreas Börner, Łukasz Bujak, Leszek Marks, Radosław Mieszkowski, Piotr Moska, Daniel Okupny, Małgorzata Pisarska‐Jamroży, Renata Stachowicz‐Rybka, Krzysztof Stachowicz   +11 more
wiley   +1 more source

Radar stratigraphy of the glaciotectonically deformed deposits in the Isoniemi area, Haukipudas, Finland [PDF]

Bulletin of the Geological Society of Finland, 2009
The study of deposits in the central areas of Weichselian Scandinavian Ice Sheet (SIS) is important for understanding behaviour of the ice sheet. This study provides new information on the deposits in the previously poorly known glaciofluvial Isoniemi ...
A. Pasanen
doaj   +1 more source

Research and prospect of UWB radar wave transmission attenuation based on borehole rescue

Gong-kuang zidonghua, 2023
Obtaining the position of underground trapped personnel quickly and precisely is a key issue for life information detection in the early stage of borehole rescue.
WEN Hu, LIU Shengkai, ZHENG Xuezhao, CAI Guobin, HUANG Yuan, ZHANG Hui   +5 more
doaj   +1 more source

Reassessing Alpine Permafrost Thermal State by Accounting for Ground Ice

Earth's Future, Volume 14, Issue 8, August 2026.
Abstract Permafrost thermal state, representing the stored “cold energy” in the ground, is crucial for assessing permafrost changes. However, the conventional metric, mean annual ground temperature (MAGT), has inherent limitations because it overlooks the thermodynamic contribution of ground ice.
Hailong Ji, Zhuotong Nan, Yuhong Chen, Lihua Chen, Shuping Zhao   +4 more
wiley   +1 more source

Implicit Neural Representation to Improve the Resolution of 3D Electrical Resistivity

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Electrical resistivity tomography (ERT) is a subsurface imaging geophysical technique. Traditional ERT inversion methods, such as smoothness‐constrained least‐squares approaches, often suffer from discretization artifacts when reconstructing electrical resistivity from resistance measurements.
Yusen Yuan, Kenneth C. Carroll, Huichao Yin, Pushpa R. Dahal, Dale F. Rucker, Ahsan Jamil, Anderson Ward, Zachary Lepchitz, Dan Lu   +8 more
wiley   +1 more source