Results 61 to 70 of about 3,456 (197)

The Gannon Storm's Impact on Electric and Magnetic Fields in Italy: A Regional Perspective

open access: yesSpace Weather, Volume 24, Issue 1, January 2026.
Abstract The 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 storm‐induced variations.
Giulia Pignatiello   +5 more
wiley   +1 more source

The Relationship Between the Magnetometer Data Derived GIC Index and Measured GIC in High Voltage Transformers in Australia

open access: yesSpace Weather, Volume 24, Issue 1, January 2026.
Abstract Geomagnetically induced currents (GICs) are telluric currents driven by space weather that can adversely impact high voltage transformers in electricity supply networks. It is often difficult to obtain transformer GIC data so ground based magnetometer data may be used to estimate the transformer GIC via complex modeling of both network and ...
C. L. Waters, R. A. Marshall
wiley   +1 more source

Characterisation of grain orientated electrical steels under high DC biased conditions [PDF]

open access: yes, 2016
Power transformers are designed to operate under pure AC excitation, however they may be subjected to superimposed DC voltages and consequential offset currents, for example from geomagnetically induced currents, GICs, arising from solar activity.
Anderson, Philip Ian   +1 more
core   +1 more source

Investigating Geomagnetic Disturbances in the Expansion Phase of Strong Substorms

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract This study contributes to improved space weather forecasting by investigating geomagnetic disturbances (GMDs) associated with rapid decreases in the SuperMAG Auroral Electrojet Lower (SML) index during strong substorms (SML < ${< } $ −500 nT) at high latitudes (64° ${}^{\circ}$–75° ${}^{\circ}$ MLAT).
Sanjay Kumar   +3 more
wiley   +1 more source

Geomagnetism : review 2010 [PDF]

open access: yes, 2011
The Geomagnetism team measures, records, models and interprets variations in the Earth’s natural magnetic fields, across the world and over time. Our data and expertise help to develop scientific understanding of the evolution of the solid Earth and ...

core  

MHD Forecasting of Solar Wind With Coronal Mass Ejections

open access: yesSpace Weather, Volume 23, Issue 12, December 2025.
Abstract We present a model, implemented as an online service, for predicting the speed and density of solar wind in the inner heliosphere and near Earth. The model is based on a numerical magnetohydrodynamics code PLUTO. The inner boundary maps are continuously obtained from the National Centers for Environmental Prediction, where they are updated 1 ...
S. Arutyunyan   +3 more
wiley   +1 more source

The Development of Models for Assessment of the Geomagnetically Induced Currents Impact on Electric Power Grids during Geomagnetic Storms

open access: yesAdvances in Electrical and Computer Engineering, 2015
A model and an algorithm for the calculation of the functioning of an electric power grid of arbitrary configuration and complexity during geomagnetic storms were developed.
VAKHNINA, V. V.   +4 more
doaj   +1 more source

Space Weather and Power Grids - A Vulnerability Assessment [PDF]

open access: yes, 2014
Strong geomagnetic disturbances resulting from solar activity can have a major impact on ground-based infrastructures, such as power grids, pipelines and railway systems.
KRAUSMANN Elisabeth, PICCINELLI ROBERTA
core   +1 more source

Simulating Geomagnetically Induced Currents (GICs) in the Irish Power Network

open access: yes, 2015
Presentation given at ESPM 2014 in Trinity College Dublin.
Blake, Sean   +8 more
openaire   +1 more source

Development of an Electromagnetic‐Thermal Circuit Model for Single‐Phase Three‐Limb Transformers

open access: yesHigh Voltage, Volume 10, Issue 6, Page 1545-1557, December 2025.
ABSTRACT Analysing the heat states of transformers under DC bias requires careful consideration of their own structural and material characteristics. Although the 3D finite element method (FEM) is a reliable way of simulating all the details of transformers, it may be time‐consuming or have encountered convergence difficulties due to the complex ...
Yidan Hu   +5 more
wiley   +1 more source

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