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Geoelectric fields and geomagnetically induced currents during the April 23–24, 2023 geomagnetic storm [PDF]
Scientific ReportsWe present a study on the dynamical variations of geoelectric fields E during the intense geomagnetic storm of April 23–24, 2023. The storm is caused by the interplanetary counterpart of a coronal mass ejection erupted from the Sun in association with an
Anna Wawrzaszek +5 more
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Independent component analysis of geoelectric field data in the northern Nagano, Japan. [PDF]
Proc Jpn Acad Ser B Phys Biol Sci, 2009 Simultaneous anomalous change of geoelectric field was observed on January 17, 1999 at three far-distant stations in Nagano Prefecture, Japan. Eleven days after the anomalous change, an earthquake swarm with a M4.8 main shock started at a location within the triangle formed by the three stations.
Orihara Y, Kamogawa M, Nagao T, Uyeda S.
europepmc +4 more sources
Regression‐based forecast model of induced geoelectric field
Space Weather, 2017 AbstractThe electric field induced due to solar activity is the driver of geomagnetically induced currents (GIC) in grounded conductor networks such as power grids. We present a regression‐based (i.e., empirical) model for quantitatively predicting the upper envelope of induced E field components, using near‐Earth measurements of solar wind plasma and ...
S. I. Lotz, M. J. Heyns, P. J. Cilliers
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Space WeatherGeomagnetically induced currents (GICs) are naturally occurring electrical currents that flow through the Earth and long conductive infrastructure, such as power lines, during geomagnetic storms.
Hannah G. Parry +4 more
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Geosciences Research, 2017 To assess the geomagnetic hazard to power systems, it is necessary to model the Geomagnetically Induced Currents (GIC) produced during space weather storms. This requires knowledge of the geoelectric fields that drive GIC.
Risto J. Pirjola, David H. Boteler
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Extreme Value Analysis of Induced Geoelectric Field in South Africa
Space Weather, 2017 AbstractExtreme geomagnetic disturbances occur rarely but can have great impact on technological systems such as power supply networks. Long‐term planning for extreme events requires the estimation of event impact for occurrence periods greater than the length of observed data.
S. I. Lotz, D. W. Danskin
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Geolectric field measurement, modelling and validation during geomagnetic storms in the UK
Journal of Space Weather and Space Climate, 2021 Significant geoelectric fields are produced by the interaction of rapidly varying magnetic fields with the conductive Earth, particularly during intense geomagnetic activity.
Beggan Ciarán D. +4 more
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Toward GIC Forecasting: Statistical Downscaling of the Geomagnetic Field to Improve Geoelectric Field Forecasts [PDF]
Space Weather, 2022 AbstractGeomagnetically induced currents (GICs) are an impact of space weather that can occur during periods of enhanced geomagnetic activity. GICs can enter into electrical power grids through earthed conductors, potentially causing network collapse through voltage instability or damaging transformers.
C. Haines +6 more
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Space Weather, 2022 A study is made of the relations between geomagnetic and geoelectric field variation, Earth‐surface impedance, and operational interference (“anomalies”) experienced on electric‐power systems across the contiguous United States during the 13–14 March ...
Jeffrey J. Love +5 more
doaj +1 more source
Space Weather, 2022 Intense geoelectric fields during geomagnetic storms drive geomagnetically induced currents in power grids and other infrastructure, yet there are limited direct measurements of these storm‐time geoelectric fields.
Xueling Shi +6 more
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