Results 11 to 20 of about 9,282,579 (236)
Space WeatherEvaluating the impact of geomagnetic disturbances on power grid infrastructure is critical to mitigate the risk posed by geomagnetically induced currents (GICs).
Qihe Shao +6 more
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Geomatics, Natural Hazards & Risk, 2023 This paper reports three methods of researching the geoelectric index (GEI) based on the ratio between the variation amplitude of geoelectric field on an index calculation day and that on a magnetically quiet day, and uses the three methods to process ...
Junsong Sun +4 more
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Geoelectric Field Evaluation During the September 2017 Geomagnetic Storm: MA.I.GIC. Model [PDF]
Space Weather, 2019 AbstractThe space environment near Earth is constantly subjected to changes in the solar wind flow generated at the Sun. Examples of this variability are the occurrence of powerful solar disturbances, such as coronal mass ejections (CMEs). The impact of CMEs on the Earth's magnetosphere perturbs the geomagnetic field causing the occurrence of ...
M. Piersanti +4 more
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Space WeatherTo better understand the risks of space weather to electric power transmission networks, magnetometer data and nearby magnetotelluric impedance data at four sites in Alberta, Canada are used to estimate the induced geoelectric field over the last 12–32 ...
Darcy Cordell +4 more
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Alexandria Engineering Journal, 2023 The geoelectric fields induced during geomagnetic disturbances (GMD) may affect the normal operation of technological systems at the Earth’s surface. The non-uniform Earth conductivity structure, especially large lateral conductivity contrasts, can lead ...
Xuan Wang, Shuming Zhang
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The Gannon Storm's Impact on Electric and Magnetic Fields in Italy: A Regional Perspective
Space WeatherThe intense May 2024 geomagnetic storm provided an opportunity to conduct the first analysis of geoelectric hazards in Italy. Data from three geomagnetic observatories and a magnetotelluric station were analyzed to examine the spatiotemporal evolution of
Giulia Pignatiello +5 more
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Space WeatherIntense geoelectric fields during geomagnetic storms generate geomagnetically induced currents in power grids and other infrastructure, necessitating an understanding of their causes, for example, through coordinated space and ground observations.
Xueling Shi +8 more
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Influence of geoelectric field on chemical reactions on Earth [PDF]
Reports of the National Academy of Sciences of Ukraine, 2016 The existing understanding of chemical thermodynamics presupposes that at the same temperature and other conditions being equal, the rate of a chemical reaction will always and everywhere on Earth be constant. We have found that geoelectric field generated by the Earth's ionosphere, is capable of exerting a strong influence on the rate of chemical ...
I. Shevchenko
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A comparison of methods for estimating the geoelectric field [PDF]
Space Weather, 2017 AbstractThe geoelectric field is the primary input used for estimation of geomagnetically induced currents (GICs) in conducting systems. We compare three methods for estimating the geoelectric field given the measured geomagnetic field at four locations in the U.S.
R. Weigel
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Characterizing the distribution of extreme geoelectric field events in Sweden
Journal of Space Weather and Space ClimateHistorically, 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 +4 more sources