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Geoelectric Field Estimation during Geomagnetic Disturbances
2019 IEEE Power & Energy Society General Meeting (PESGM), 2019Geomagnetic disturbances (GMD) occur due to the increase of solar activities, which leads to the variation of earth magnetic field. The variation of magnetic field affects power systems in the form of geomagnetically induced current (GIC), which refers to the quasi DC current flow through transmission lines and transformer windings.
Jiahao Xie +4 more
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The geoelectric field at Davis station, Antarctica
Journal of Atmospheric and Terrestrial Physics, 1995Abstract An electric field mill is used to measure the vertical component of the geoelectric field at Davis station, Antarctica (68.6°S, 78.0°S, geographic coordinates; 74.6°S magnetic latitude). Local influences on the measurements are determined.
G.B. Burns +4 more
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Proceedings of the 2nd International Conference on Bioelectromagnetism (Cat. No.98TH8269), 2002
Our planet is enveloped by an electric field, which is always present, but varies in magnitude. Even though this has been known for several decades, very little attention is being given to this phenomenon. This global electric field is still not fully understood and provides more questions than answers.
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Our planet is enveloped by an electric field, which is always present, but varies in magnitude. Even though this has been known for several decades, very little attention is being given to this phenomenon. This global electric field is still not fully understood and provides more questions than answers.
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Mathematical Modeling of Some Geoelectrical Fields in Archaeological Exploration
64th EAGE Conference & Exhibition, 2002P197 MATHEMATICAL MODELING OF SOME GEOELECTRICAL FIELDS IN ARCHAEOLOGICAL EXPLORATION SUMMARY 1 The geoelectrical fields observed on rugged topography (necropolis) are considerably complicated by the effect of unevenness of the earth's surface. This effect can be eliminated in geophysical interpretation.
S. Kostyanev, V. Stoyanov, E. Atanasova
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Preliminary Study on Efficiency Evaluation of Geoelectric Field Observation
2020 2nd International Conference on Information Technology and Computer Application (ITCA), 2020Based on the overall consideration of observation environment, observation system, data quality, and forecast application, the evaluation system is preliminarily established by using AHP combined with quantitative and qualitative analysis which realizes the quantitative evaluation of geoelectric field observation efficiency.
Xiaona Dong +3 more
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Study of the geoelectric fields at Vostok, Antarctica
2023In fair weather regions, a downward directed geoelectric field of ~ 100 ‚ÄövÑvÆ 200 Vm-1 can be measured at the surface of the Earth. At high latitudes, the interaction of the solar wind and interplanetary magnetic field with the Earth's magnetosphere and ionosphere imposes a variable dawn-to-dusk potential drop of 20 ‚ÄövÑvÆ 150 kV on the geoelectric ...
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Quantitative Geoelectric Mapping Of The Hydraulic Conductivity Field
14th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2001This paper describes in a stochastic framework how geoelectrics can be used to quantitatively map the hydraulic conductivity field. This is achieved by describing both a microscale and a macroscale model of aquifer electrical and hydraulic flow. The microscale model reveals that electrical and hydraulic conductivities are a function of two common ...
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Polar Cap May Have A Geoelectric Field
Physics Today, 1969During the period of high solar and geomagnetic activity in late May 1967 the Air Force satellite OV1-9 detected energetic proton fluxes coming up the magnetic field lines from the earth at high magnetic latitudes (λ⩾65–70 deg). Ludwig Katz and Paul L.
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Estimation of geoelectric field for validating geomagnetic disturbance modeling
2013 IEEE Power and Energy Conference at Illinois (PECI), 2013Geomagnetic induced currents (GICs) cause half cycle saturation of transformers and consequently increase the harmonic currents and reactive power in the grid. This paper focuses on the GIC modeling as an important geomagnetic disturbance (GMD) mitigation program.
M. Kazerooni +3 more
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Tidal wave anomalies of geoelectrical field before remote earthquakes
Acta Seismologica Sinica, 2007In this paper, geoelectrical field anomalies at Changli and Xingji station in Hebei Province were analyzed before five remote earthquakes. It was found that the anomalies mainly occurred two or three months before earthquakes, which is of importance to short-term and impendent earthquake prediction.
Xue-min Zhang +3 more
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