Results 51 to 60 of about 4,955 (149)
Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.Abstract Variations in the solar wind, particularly those associated with interplanetary coronal mass ejections (ICMEs) and high‐speed streams (HSSs), drive geomagnetic disturbances that produce rapid changes in the ground magnetic field. These variations, commonly quantified by the time derivative of the horizontal magnetic field dBH/dt $\left({\text ...
José P. Marchezi +8 more
wiley +1 more source
Space Weather, 2021 We must be able to predict and mitigate against geomagnetically induced current (GIC) effects to minimize socio‐economic impacts. This study employs the space weather modeling framework (SWMF) to model the geomagnetic response over Fennoscandia to the ...
A. P. Dimmock +10 more
doaj +1 more source
Space Weather, Volume 24, Issue 9, September 2026.Abstract This study presents a survey of high‐latitude ionospheric scintillation using GNSS radio occultation (RO) data from the PlanetiQ satellite. The analysis examines 483 high‐latitude RO tracks between January and May 2023, with 371 tracks exhibiting scintillation events.
Margaret W. Chen +6 more
wiley +1 more source
Substorm Onset Prediction Using Machine Learning Classified Auroral Images
Space Weather, 2023 We classify all sky images from four seasons, transform the classification results into time‐series data to include information about the evolution of images and combine these with information on the onset of geomagnetic substorms. We train a lightweight
P. Sado +3 more
doaj +1 more source
Space Weather, Volume 24, Issue 9, September 2026.Abstract We developed a multi‐module convolutional neural network combined with a multi‐head attention mechanism (MM‐CNN‐MHA) to forecast geomagnetically induced currents (GICs) at the Huangmeishan (HMS) 220‐kV substation in Fujian Province, China.
Xuejian Zhang +8 more
wiley +1 more source
Space Weather, 2021 Rapid changes of magnetic fields associated with nighttime magnetic perturbation events (MPEs) with amplitudes |ΔB| of hundreds of nT and 5–10 min duration can induce geomagnetically induced currents (GICs) that can harm technological systems. This study
Mark J. Engebretson +11 more
doaj +1 more source
Space Weather, Volume 24, Issue 9, September 2026.Abstract Global Ionospheric Specification (GIS) three‐dimensional electron density profiles constructed by assimilating the line‐of‐sight total electron content (TEC) from global navigation satellite system (GNSS) radio occultation (RO) measurements by FORMOSAT‐7/COSMIC‐2 (F7/C2) and ground‐based receiver network from international GNSS service ...
P. K. Rajesh +7 more
wiley +1 more source
Geophysical Research LettersWe studied the characteristics of ultra‐low‐frequency (ULF) waves associated with dipolarization in the near‐Earth plasma sheet for substorms and pseudosubstorms, employing superposed epoch analysis of data from the Time History of Events and Macroscale ...
Kanpatom Kasonsuwan +2 more
doaj +1 more source
Statistical study on interplanetary drivers behind intense geomagnetic storms and substorms
Earth and Planetary Physics, 2019 Geomagnetic storms and substorms play a central role in both the daily life of mankind and in academic space physics. The profiles of storms, especially their initial phase morphology and the intensity of their substorms under different interplanetary ...
Tian Tian +5 more
doaj +1 more source
Major Space Weather Risks Identified via Coupled Physics‐Engineering‐Economic Modeling
AGU Advances, Volume 7, Issue 6, September 2026.Abstract Space weather poses an important but under‐quantified threat to society. While severe geomagnetic storms are recognized as potential global catastrophes, their socio‐economic impacts remain poorly quantified. We present a novel physics‐engineering‐economic framework that links geophysical drivers to power grid geoelectric fields, transformer ...
Edward J. Oughton +7 more
wiley +1 more source