Results 31 to 40 of about 2,994 (242)

Geomagnetically Induced Currents at Middle Latitudes: 1. Quiet‐Time Variability

Space Weather, 2022
Geomagnetically induced currents (GICs) at middle latitudes have received increased attention after reported power grid disruptions due to geomagnetic disturbances. However, quantifying the risk to the electric power grid at middle latitudes is difficult
Adam C. Kellerman, Ryan Mcgranaghan, Jacob Bortnik, Brett A. Carter, Joseph Hughes, Robert F. Arritt, Karthik Venkataramani, Charles H. Perry, Jackson McCormick, Chigomezyo M. Ngwira, Morris Cohen, Jia Yue   +11 more
doaj   +1 more source

The Response of Ionospheric Currents to External Drivers Investigated Using a Neural Network‐Based Model

Space Weather, 2023
A predictive model for the variation of ionospheric currents is of great scientific and practical importance to our modern industrial society. To study the response of ionospheric currents to external drivers including geomagnetic indices and solar ...
Xin Cao, Xiangning Chu, Jacob Bortnik, James M. Weygand, Jinxing Li, Homayon Aryan, Donglai Ma   +6 more
doaj   +1 more source

First E region observations of mesoscale neutral wind interaction with auroral arcs [PDF]

, 2010
We report the first observations of E region neutral wind fields and their interaction with auroral arcs at mesoscale spatial resolution during geomagnetically quiet conditions at Mawson, Antarctica.
Aikio, Anderson, Armstrong, Arnoldy, Aruliah, Aruliah, Aruliah, Aruliah, B. A. Carter, Brekke, Burch, C. Anderson, Chisham, Cierpka, Codrescu, Conde, Conde, Conde, Crickmore, Currie, Davies, del Pozo, Deng, Doe, Doe, Egeland, Friis-Christensen, Fuller-Rowell, Galperin, Greenwald, Heelis, Hernandez, Holmes, Iijima, Iijima, Kamide, Killeen, Killeen, Killeen, Kirkwood, Knudsen, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Kosch, Larsen, Lewis, M. Conde, M. J. Kosch, Makarevich, McCormac, Millward, Nozawa, Opgenoorth, P. L. Dyson, Price, Price, R. A. D. Fiori, R. A. Makarevich, Rees, Rees, Rees, Ruohoniemi, Schlegel, Schunk, Senior, Senior, Senior, Störmer, T. Davies, Thayer, Tsunoda, Vickrey, Wang, Weimer, Wescott, Zmuda   +80 more
core   +1 more source

Assessment of Geomagnetically Induced Currents Impact on Power Grid Modelling

Magnetism, 2023
Recent history demonstrates that threat has no borders, though risk does, due to national and regional differences in vulnerabilities and exposure landscapes. The difference between well and poorly managed threat is striking.
Stanislav Gritsutenko, Nikolay Korovkin, Yaroslav Sakharov, Olga Sokolova   +3 more
doaj   +1 more source

Geomagnetically Induced Currents over Kazakhstan during Large Geomagnetic Storms

, 2022
Abstract Extreme solar events, such as flares accompanied by the ejection of a powerful magnetic cloud, cause perturbation of the Earth's magnetic field and form fluctuating currents in the ionosphere and magnetosphere. One of the negative consequences of extreme solar phenomena for technological systems is the appearance of geomagnetically ...
Saule Mukasheva, Alexey Andreyev, Vitaliy Kapytin, Olga Sokolova   +3 more
openaire   +1 more source

Modelling geomagnetically induced currents in midlatitude Central Europe using a thin-sheet approach [PDF]

, 2017
Geomagnetically induced currents (GICs) in power systems, which can lead to transformer damage over the short and the long term, are a result of space weather events and geomagnetic variations. For a long time, only high-latitude areas were considered to
Achleitner, Georg, Bailey, Rachel L., Beggan, Ciaran D., Egli, Ramon, Halbedl, Thomas S., Leonhardt, Roman, Römer, Alexander, Schattauer, Ingrid, Wesztergom, Viktor   +8 more
core   +7 more sources

Three‐Dimensional Modeling of the Ground Electric Field in Fennoscandia During the Halloween Geomagnetic Storm

Space Weather, 2023
In this study, we perform three‐dimensional (3‐D) ground electric field (GEF) modeling in Fennoscandia for three days of the Halloween geomagnetic storm (29–31 October 2003) using magnetic field data from the International Monitor for Auroral Geomagnetic
Elena Marshalko, Mikhail Kruglyakov, Alexey Kuvshinov, Ari Viljanen   +3 more
doaj   +1 more source

Continental scale modelling of geomagnetically induced currents

Journal of Space Weather and Space Climate, 2012
The EURISGIC project (European Risk from Geomagnetically Induced Currents) aims at deriving statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids.
Sakharov Yaroslav, Prácser Ernö, Ádám Antal, Wik Magnus, Pirjola Risto, Viljanen Ari, Katkalov Juri   +6 more
doaj   +1 more source

Geomagnetically Induced Currents: Frequency Spectra and Threats to Voltage Stability

IEEE Access, 2022
Geomagnetically induced currents are induced after a complex interaction between the sun and earth’s magnetic field. GICs may cripple power systems leading to voltage collapse and a drop in power quality.
Pitambar Jankee, David Oyedokun, Maysam Soltanian, Hilary K. Chisepo, Michael Heyns   +4 more
doaj   +1 more source

Nuclear Magnetohydrodynamic EMP, Solar Storms, and Substorms

, 2003
In addition to a fast electromagnetic pulse (EMP), a high altitude nuclear burst produces a relatively slow magnetohydrodynarnic EMP (MHD EMP), whose effects are like those from solar storm geomagnetically induced currents (SS GIC).
Cokkinides, George J., Glytsis, Elias N., Meliopoulos, A. P. Sakis, Rabinowitz, Mario   +3 more
core   +1 more source