Results 111 to 120 of about 5,330 (213)

Developing a New Ground Electric Field Model for Geomagnetically Induced Currents in Britain Based on Long‐Period Magnetotelluric Data

open access: yesSpace Weather
Large variations in ground electric field in mid‐latitude countries like the UK during a geomagnetic storm drive so‐called geomagnetically induced current, a major geohazard to ground‐based technological infrastructure like electrical transformers at ...
J. Hübert   +5 more
doaj   +1 more source

Data analysis before and after the transformation of Yuanmou Julin geoelectric field

open access: yes地震科学进展
Taking the geoelectric field observation data of Yuanmou Julin of Chuxiong Earthquake Monitoring Center Station as the research object, combined with the ideas and specific contents of the two transformations since the geoelectric field observation,the ...
Xin Xiao   +4 more
doaj   +1 more source

Groundwater potential assessment in a sedimentary terrain, southwestern Nigeria [PDF]

open access: yes, 2016
Geoelectrical resistivity techniques are increasingly being applied in addressing a wide range of hydrological, environmental, and geotechnical problems. This is due to their effectiveness in near-surface characterization.
Aizebeokhai, A. P.   +2 more
core  

Three-dimensional geoelectric modelling with optimal work/accuracy rate using an adaptive wavelet algorithm [PDF]

open access: yes, 2017
Despite the ever-increasing power of modern computers, realistic modelling of complex 3-D earth models is still a challenging task and requires substantial computing resources.
Dahmen, W.   +3 more
core  

Evaluation of the Caoping electric field observation system in Lixian County, Gansu Province

open access: yes地震科学进展
In this paper, we briefly conducted an observation overview of the Caoping electric field in Lixian County, collected observation data for graphical analysis, and compared and measured the parameters of observation quality (correlation coefficient and ...
Yanping Chen   +4 more
doaj   +1 more source

Characterizing the distribution of extreme geoelectric field events in Sweden

open access: yesJournal of Space Weather and Space Climate
Historically, Sweden has reported several impacts on transformers and transmission lines related to geomagnetically induced currents (GICs) that develop during strong space weather events. GICs are driven by the geoelectric field (E), and their intensity depends on various factors, including the lithology conductivity and the rate of change of the ...
Vanina Lanabere   +5 more
openaire   +3 more sources

Why Do Sudden Commencements Sometimes Generate Disproportionate Geomagnetically Induced Currents?

open access: yesSpace Weather
Geomagnetically Induced Currents (GICs) in grounded, conducting infrastructure (e.g., power networks) represent an important space weather hazard. GICs are driven by the changing magnetic field at the Earth's surface.
A. W. Smith   +14 more
doaj   +1 more source

Geoelectric Fields and Geomagnetically Induced Currents in the United Kingdom

open access: yes, 2003
This thesis investigates geo-electric fields in the United Kingdom with particular regard to Geomagnetically Induced Currents (GIC) in the Scottish Power electricity transmission network (SPTN). The joint spectral characteristics of Scottish Power GIC and Eskdalemuir magnetic observatory data are analysed, and GIC are shown to be coherent with ...
openaire   +2 more sources

An Overview of Science Challenges Pertaining to our Understanding of Extreme Geomagnetically Induced Currents [PDF]

open access: yes
Vulnerability of man-made infrastructure to Earth-directed space weather events is a serious concern for today's technology-dependent society. Space weather-driven geomagnetically induced currents (GICs) can disrupt operation of extended electrically ...
Ngwira, Chigomezyo M.   +1 more
core   +1 more source

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