Results 61 to 70 of about 637,520 (196)

Extreme Radiation Belt Dropout During the May 2024 Superstorm

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract The geomagnetic superstorm in May 2024 represents the most extreme space weather event over the past two decades, offering a unique opportunity to investigate radiation belt electron dynamics under exceptionally strong solar wind driving conditions. Observations from the Arase satellite show that relativistic electron fluxes dropped by several
Xingzhi Lyu, Dedong Wang, Bernhard Haas, Miroslav Hanzelka, Yixin Sun, Zikang Xie, Alwin Roy, Yoshizumi Miyoshi, Yihua Zheng, Christos Katsavrias, Sigiava Aminalragia‐Giamini, Nana Higashio, Takefumi Mitani, Takeshi Takashima, Iku Shinohara, Yoshiya Kasahara, Shoya Matsuda, Atsuki Shinbori, Fuminori Tsuchiya, Atsushi Kumamoto, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto, Yuri Y. Shprits   +23 more
wiley   +1 more source

Multi-spacecraft observation of plasma dipolarization/injection in the inner magnetosphere [PDF]

Annales Geophysicae, 2007
Addressing the origin of the energetic particle injections into the inner magnetosphere, we investigate the 23 February 2004 substorm using a favorable constellation of four Cluster (near perigee), LANL and Geotail spacecraft. Both an energy-dispersed
S. V. Apatenkov, V. A. Sergeev, M. V. Kubyshkina, R. Nakamura, W. Baumjohann, A. Runov, I. Alexeev, A. Fazakerley, H. Frey, S. Muhlbachler, P. W. Daly, J.-A. Sauvaud, N. Ganushkina, T. Pulkkinen, G. D. Reeves, Y. Khotyaintsev   +15 more
doaj   +1 more source

Sensitivity of the Martian Magnetotail to Model Configuration Choices in Multispecies MHD Simulations

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Numerical modeling has been a key component in the study of the Mars space environment, providing a comprehensive global representation that is not always easy to obtain in spacecraft measurements. However, there are inconsistencies in data‐model and model‐model comparisons, regardless of whether the simulation conditions are identical or ...
Nii‐Boi A. Quartey, Michael W. Liemohn, Wenyi Sun, Yingjuan Ma   +3 more
wiley   +1 more source

Multipoint observation of the response of the magnetosphere and ionosphere related to the sudden impulse event on 19 November 2007

Journal of Space Weather and Space Climate, 2015
The aim of this study is to provide a complete scope of a magnetic sudden impulse (SI) event along its way through interplanetary space and the magnetosphere until its arrival to the ground.
Segarra Antoni, Nosé Masahito, Curto Juan José, Araki Tohru   +3 more
doaj   +1 more source

Lightweight Deep Learning for Identification and Suppression of Subway Interference in Geomagnetic Observations

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Geomagnetic observatory networks provide continuous data for space weather monitoring, field modeling, and solid Earth geophysics. Rapid urbanization, however, has introduced pervasive electromagnetic interference from subway traction systems, degrading data quality at a growing number of urban stations.
Qiaoling Huo, Xizhen Wang, Xinxin Ma, Suqin Zhang   +3 more
wiley   +1 more source

Synthesizing auroral substorm processes based on magnetosphere-ionosphere electric currents

Frontiers in Astronomy and Space Sciences
A synthesis of various processes associated with auroral substorms is attempted by considering medium intensity substorms. In this paper, we consider that the magnetosphere-ionosphere system is an electric current system.
Syun-Ichi Akasofu, A. T. Y. Lui, Lou-Chuang Lee   +2 more
doaj   +1 more source

Proton Equatorial Pitch Angle Distributions in Jupiter's Inner Magnetosphere

Geophysical Research Letters, 2023
We use data from the plasma and energetic particle instruments on the Juno spacecraft, JADE and JEDI, to study the equatorial pitch angle distributions of energetic protons within Jupiter's inner magnetosphere during Juno's prime mission from 2016 to ...
Y. Sarkango, J. R. Szalay, A. R. Poppe, Q. Nénon, P. Kollmann, G. Clark, D. J. McComas   +6 more
doaj   +1 more source

Analytical Modeling of Hot Ion Interchange Injections in Saturn's Magnetosphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Cassini's CHarge Energy Mass Spectrometer (CHEMS) instrument collected energetic plasma data from 2004 to 2017, including hundreds of observations of small‐scale nearly dispersionless “local” injection events into the inner magnetosphere. This study assesses whether these interchange‐like injections are a channel‐like structure still connected
Michael W. Liemohn, Jenna Syposs, Abigail R. Azari, Erika Y. Hathaway, Alexandra K. Roosnovo   +4 more
wiley   +1 more source

Coupling of the solar wind, magnetosphere and ionosphere by MHD waves [PDF]

, 2012
The solar wind, magnetosphere and ionosphere are coupled by magnetohydrodynamic waves, and this gives rise to new and often unexpected behaviours that cannot be produced by a single, isolated part of the system.
Russell, Alexander J. B.
core   +2 more sources

Impacts of Neutral Wind‐Driven Currents on Geomagnetic Disturbances and Magnetospheric Dynamics During the May 2024 Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The neutral wind dynamo generates ionospheric currents that can significantly affect high‐latitude electrodynamics during geomagnetic storms, yet its role in global magnetosphere‐ionosphere coupling is often underrepresented. We quantify the impact of wind‐driven currents on geomagnetic disturbances (GMDs) and magnetospheric dynamics during ...
Yu Hong, Yue Deng, Cheng Sheng, Daniel Welling, Colin Waters   +4 more
wiley   +1 more source