Results 41 to 50 of about 5,330 (213)

Implications of heterogeneous embankment conditions for geoelectrical investigations on dams: A case study at Mactaquac Dam, Canada

Near Surface Geophysics, EarlyView.
Abstract Electrical resistivity tomography (ERT) has been shown to be effective for surveying and monitoring dams, due to the method's sensitivity to moisture content and relevant physical properties (e.g., porosity). Automated ERT systems, capable of time‐lapse monitoring, can be used to detect variations in ground conditions.
John S. Ball, Karl E. Butler, Jonathan E. Chambers, Paul B. Wilkinson, Andrew Binley   +4 more
wiley   +1 more source

Data quality and spectrum analysis of geoelectric field at Wengtian station in Hainan

地震科学进展
The observation object of the geoelectric field observation system is the geoelectric field intensity vector. Its purpose is to explore the change of the geoelectric field before earthquake, to obtain the electrical structure and its change law of ...
Mingrui Guo, Xijiao Wang, Qiming Lu, Dongya Li, Xuehua Pang, Yuqin Guo, Xiaojing Xie   +6 more
doaj   +1 more source

Subsurface Investigations of Cryo‐Hydrogeological Features in a High Arctic Catchment Under Transition

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT In this study, the internal structure and seasonal variations of cryo‐hydrogeological features were investigated in the Fuglebekken catchment, located near the Polish Polar Station Hornsund in Svalbard. Over a few years, rising air temperatures and intensified water circulation have significantly altered the distribution, extent, and state of ...
Wawrzyniak Tomasz, Oryński Szymon, Marciniak Artur, Osuch Marzena   +3 more
wiley   +1 more source

The detection and tracking of mine-water pollution from abandoned mines using electrical tomography [PDF]

, 2009
Increasing emphasis is being placed on the environmental and societal impact of mining, particularly in the EU, where the environmental impacts of abandoned mine sites (spoil heaps and tailings) are now subject to the legally binding Water Framework and ...
Chambers, J.E., Klinck, B.A., Kuras, O., Meldrum, P.I., Ogilvy, R.D., Palumbo-Roe, B., Wilkinson, P.B.   +6 more
core  

Middle to Late Pleistocene landscape evolution and glacial dynamics in the Eastern Alps: the Gröbminger Mitterberg record, Austria

Boreas, EarlyView.
Glacial erosion during the Last Glacial Maximum (LGM) has removed much evidence of earlier glaciations and interglacials in the European Alps. At Gröbminger Mitterberg (GM), beneath a blanket of LGM till, a distinctive sediment archive preserves deposits predating the LGM.
Gerit E. U. Griesmeier, Daniel P. Le Heron, Christopher Lüthgens, Gustav Firla, Bernhard Salcher, Fabian Dremel, Jan‐Christoph Otto, Jürgen M. Reitner   +7 more
wiley   +1 more source

Down to Earth With Nuclear Electromagnetic Pulse: Realistic Surface Impedance Affects Mapping of the E3 Geoelectric Hazard

Earth and Space Science, 2021
An analysis is made of Earth‐surface geoelectric fields and voltages on electricity transmission power‐grids induced by a late‐phase E3 nuclear electromagnetic pulse (EMP). A hypothetical scenario is considered of an explosion of several hundred kilotons
Jeffrey J. Love, Greg M. Lucas, Benjamin S. Murphy, Paul A. Bedrosian, E. Joshua Rigler, Anna Kelbert   +5 more
doaj   +1 more source

The Turkish Dilatancy Project (TDP3): multidisciplinary studies of a potential earthquake source region [PDF]

, 1987
The section of the North Anatolian Fault lying near the city of Izmit, at the east of the Marmara Sea, has been identified as a seismic gap and the possible site of a future major earthquake.
Beamish, David, Crampin, Stuart, Evans, Russ, Ucer, S. Balamir   +3 more
core   +1 more source

Time‐Domain Geoelectrical Modeling and Experimental Validation of Ground Potential Rise in Multilayer Soil Structures during Fault Events

Energy Science &Engineering, Volume 14, Issue 3, Page 1492-1504, March 2026.
This study develops a time‐domain geoelectrical model of ground potential rise (GPR) in multilayer soil that couples electromagnetic field theory with nonlinear fault arc resistance. Finite‐element simulations calibrated against scaled fault‐injection experiments reproduce measured GPR and step/touch voltages within 4.7% error, revealing that steady ...
Wulfran Fendzi Mbasso, Ambe Harrison, Idriss Dagal, Mohamed Metwally Mahmoud, Kenfack Saatong Tsobze, Pradeep Jangir, Muhammad Suhail Shaikh, Aseel Smerat   +7 more
wiley   +1 more source

Observation data quality and typical interference analysis of geoelectric field in Tengchong center station

地震科学进展
Based on the observation data collation, data quality and interference analysis of the geoelectric field of Tengchong center station from 2018 to 2022, it is considered that the geoelectric field data of Tengchong center station has good correlation with
Shaohui Fan, Weiye Shao, Jiawei Xiong, Shanyuan Zhang, Shengchao Duan   +4 more
doaj   +1 more source

Imaging polar and dipolar sources of geophysical anomalies by probability tomography. Part II: Application to the Vesuvius volcanic area

, 2006
In the previous part I, we have developed the generalized theory of the probability tomography method to image polar and dipolar sources of a vector or scalar geophysical anomaly field.
Mauriello, Paolo, Patella, Domenico
core   +2 more sources