Results 101 to 110 of about 13,189 (224)

Statistical Characteristics of Electron Precipitation During HSS‐ and ICME‐Driven Storms Observed by the EISCAT Radar

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract The 1–100 keV electron precipitation during storm time has been studied by applying the updated ELSPEC inversion method to field‐aligned electron density profiles measured by the EISCAT Tromsø radar at L = 6.5. The statistical properties of peak energy, total energy flux, and total number flux as a function of MLT have been studied for the two
N. M. Ellahouny, A. T. Aikio, I. I. Virtanen, H. Vanhamäki, L. Cai, M. N. Pedersen, H. W. Tesfaw   +6 more
wiley   +1 more source

Coronal shocks associated with CMEs and flares and their space weather consequences

, 2010
We study the geoeffectiveness of a sample of complex events; each includes a coronal type II burst, accompanied by a GOES SXR flare and LASCO CME. The radio bursts were recorded by the ARTEMIS-IV radio spectrograph, in the 100-650 MHz range; the GOES SXR
A. Hillaris, Caroubalos, Constantine Caroubalos, Eleftheria Mitsakou, George Pothitakis, Marina Laskari, Panagiota Preka-Papadema, Xenophon Moussas   +7 more
core   +1 more source

Ionosphere‐Thermosphere Coupling in the Northern Polar Region During the May 2024 Geomagnetic Superstorm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract The May 2024 superstorm, as the most intense geomagnetic storm since 2003, caused a variety of disturbances in the magnetosphere‐ionosphere‐thermosphere system. This study investigates the long‐lasting electron density depletion in the polar region and the underlying ionosphere‐thermosphere coupling, based on a comprehensive set of ...
Lei Cai, Anita Aikio, G. P. Geethakumari, Heikki Vanhamäki, I. I. Virtanen, Shin‐ichiro Oyama, Yongliang Zhang, Jiaojiao Zhang, Marc Hairston   +8 more
wiley   +1 more source

SPACE WEATHER AND A STATE OF CARDIOVASCULAR SYSTEM OF HUMAN BEING WITH A WEAKENED ADAPTATION SYSTEM

Odessa Astronomical Publications, 2013
As has been shown in [Samsonov et al., 2013] even at the considerable disturbances of space weather parameters a healthy human being did not undergo painful symptoms although measurements of objective physiological indices showed their changes.
S. N. Samsonov
doaj   +1 more source

The SGR 1806-20 magnetar signature on the Earth's magnetic field

, 2007
SGRs denote ``soft $\gamma$-ray repeaters'', a small class of slowly spinning neutron stars with strong magnetic fields. On 27 December 2004, a giant flare was detected from magnetar SGR 1806-20.
Alexandrescu, Balasis, Balasis, Boggs, Campbell, Duncan, G. Balasis, Hulot, Hurley, Hurley, Inan, Inan, Inan, Kumar, Lühr, M. Mandea, Maus, Mazets, Mazets, Parrot, Schwartz, Terasawa, Torrence, Tyler   +23 more
core   +1 more source

Joint Analysis With Swarm and Ground Stations: Ionospheric Current System and Geomagnetically Induced Currents

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract Sudden changes in the ground magnetic field, driven by geomagnetic activity, can ultimately generate geomagnetically induced currents (GICs), which can have a significant impact on artificial technology systems. High rates of change in the horizontal geomagnetic field (dH/dt) can be used as a substitute for the strength of GICs.
C. M. Zhang, M. W. Dunlop, J. Y. Yang, X. Tan, O. Marghitu, A. Blagau, C. Xiong, X. C. Dong, D. Wei, V. Constantinescu, G. Kervalishvili   +10 more
wiley   +1 more source

Comparison between indices during geomagnetic disturbances

Geofísica Internacional, 2004
En este trabajo se comparan los índices aurorales AE, AU, AL y el índice PC de Troshichev, medido en Thule, durante perturbaciones geomagnéticas de distintas intensidades. Para la identificación de las mismas se han usado los índices Dst y AE. Se han analizado catorce tormentas, con valores mínimos de Dst entre -50 nT y -600 nT (86% de las cuales eran ...
Patricia Fernández de Campra, Marta Zossi de Artigas   +1 more
openaire   +4 more sources

Forecasting Local Ionospheric Parameters Using Transformers

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract We present a novel method for forecasting key ionospheric parameters using transformer‐based neural networks. The model provides accurate forecasts and uncertainty quantification of the F2‐layer peak plasma frequency (foF2), the F2‐layer peak density height (hmF2), and total electron content for a given geographic location.
D. J. Alford‐Lago, C. W. Curtis, A. T. Ihler, D. P. Drob, K. A. Zawdie   +4 more
wiley   +1 more source

Segmentation and Tracking of Eruptive Solar Phenomena With Convolutional Neural Networks

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Solar eruptive events are complex phenomena, which most often include coronal mass ejections (CME), CME‐driven compressive and shock waves, flares, and filament eruptions. CMEs are large eruptions of magnetized plasma from the Sun's outer atmosphere or corona, that propagate outward into the interplanetary space.
Oleg Stepanyuk, Kamen Kozarev
wiley   +1 more source

Radial distribution of the inner magnetosphere plasma pressure using low-altitude satellite data during geomagnetic storm: the March 1-8, 1982 Event

, 2007
Plasma pressure distribution in the inner magnetosphere is one of the key parameters for understanding the main magnetospheric processes including geomagnetic storms and substorms.
Antonova, Antonova, Antonova, Antonova, Antonova, Borovsky, Bosqued, Daglis, DeMichelis, Dessler, E.E. Antonova, Iyemori, J.M. Bosqued, Kozelova, Liemohn, Lui, Lui, Lui, Lyons, Lyons, M. Stepanova, McPherron, Newell, Newell, Parker, Pulkkinen, Sckopke, Stepanova, Stepanova, Stepanova, Sugiura, Tsyganenko, Tsyganenko, Tsyganenko, Tverskaya, Tverskaya, Tverskoy, Williams, Wing, Wing, Zaharia, Zaharia   +41 more
core   +1 more source