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Prediction of Extreme Geomagnetically Induced Currents in the UK high-voltage network [PDF]

open access: yes, 2013
Ciarán Beggan gave a presentation at the IET Extreme Electromagnetics Triple Threat to Infrastructure Seminar 2013. It covered extreme geomagnetically induced currents in the UK high-voltage network, and the prediction of these ...
Beamish, David   +3 more
core   +3 more sources

Risk Assessment of Geomagnetically Induced Currents (GICs) Over the Indian Sector in Comparison With American and African Sectors

open access: yesSpace Weather
Geomagnetically Induced Currents (GICs) are the manifestation of adverse space weather events on the ground that poses serious threats to power grids as well as pipelines. Extensive investigations on the impact of GICs at high and mid‐latitudes have been
K. S. Vishnupriya, G. Manju
doaj   +1 more source

Chorus Wave‐Induced Ionospheric Variability

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Electron microbursts are short‐lived but intense electron precipitation and constitute a significant source of electron losses into the ionosphere and lower atmosphere. They are primarily produced by wave‐particle interaction with chorus waves in the magnetosphere.
Lunjin Chen   +5 more
wiley   +1 more source

Vulnerability Assessment of Korean Electric Power Systems to Late-Time (E3) High-Altitude Electromagnetic Pulses

open access: yesEnergies, 2019
High-altitude electromagnetic pulses (HEMPs) are bursts of electromagnetic energy that result from nuclear weapon detonations at altitudes at or above 30 km. A HEMP is comprised of three components: E1, E2, and E3.
Soobae Kim, Injoo Jeong
doaj   +1 more source

Neutral Wind Control of Jupiter's Non‐Auroral Ionosphere

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We use JAMMIES (JAMMIES is Another Model Making Ionospheric EStimates), a new model of Jupiter's non‐auroral ionosphere, to demonstrate that neutral wind‐driven field‐aligned plasma transport can explain decades of measurements inconsistent with a solar‐dominated ionosphere. Two observations highlight these inconsistencies: a minimum in H3+ ${\
K. Mohamed   +7 more
wiley   +1 more source

Hydrogen‐Bond Symmetrization in Hydrous Aluminous Silica Enhances Deep‐Mantle Water Cycle

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract (Al, H)‐bearing CaCl2‐type SiO2 serves as a key water carrier in Earth's deep‐water cycle. Evolution of hydrogen‐bond symmetrization in this phase was measured up to 62 GPa and 800 K by synchrotron infrared and Raman spectroscopy, and X‐ray diffraction.
Chaoshuai Zhao   +8 more
wiley   +1 more source

Power Transformer Immune to Geomagnetically Induced Currents

open access: yes, 2013
Geomagnetically induced currents (GICs) flow mainly through power lines, earthed transformers and earth itself. The near DC currents may cause half-cycle saturation of transformers, possibly causing relay misoperation, increased reactive power demand and
Lund University., Samuelsson, Olof,
core   +2 more sources

Modeling Storm‐Time Post‐Midnight Equatorial Plasma Bubbles With SAMI3‐WACCMX: Impacts of Neutral Winds, Thermospheric Composition, and Atmospheric Waves

open access: yesGeophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract This study investigates the roles of neutral winds, composition and atmospheric waves in storm‐time post‐midnight equatorial plasma bubble (EPB) development using the coupled SAMI3‐WACCMX model. Simulations reveal the formation of post‐midnight EPBs extending beyond 1,500 km in altitude and persisting into the post‐sunrise period.
Min‐Yang Chou   +4 more
wiley   +1 more source

A Novel Approach for Geoelectric Field Response Scaling Factors Used in Geomagnetic Storm Hazard Assessments

open access: yesSpace Weather
In this work, we describe an approach to characterize the ground response to geomagnetic storm drivers and recalculate the scaling factors that are used in the North American Reliability Corporation (NERC) TPL‐007 geomagnetic disturbance (GMD) standard ...
A. Pulkkinen   +4 more
doaj   +1 more source

Substorm Effects on Chorus Emissions Modulated by ULF Waves

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Although cross‐scale wave‐particle interactions play a critical role in energy transfer in the magnetosphere, the influence of geomagnetic activity on the physical mechanisms involved remains unclear. In this study, we investigate this question by analyzing Van Allen Probes‐A observations of an event occurring on 25 July 2016.
Xing‐Yu Li   +11 more
wiley   +1 more source

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