Results 61 to 70 of about 1,155 (215)

Revealing the Formation of the <20 MeV Inner Proton Radiation Belt at L ∼ 2 During the 10–11 May 2024 Superstorm

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract A new proton radiation belt was identified during the geomagnetic superstorm of 10–11 May 2024. To investigate its origin, we use an MHD‐test particle simulation to model solar energetic proton (SEP) trapping and the evolution of the initial trapped proton population during the storm.
Murong Qin, Mary K. Hudson, Miles Engel, Brian T. Kress, Zhao Li, Maulik Patel, Wen Li, Kevin Pham, William R. Johnston, Xinlin Li, Shawn Young   +10 more
wiley   +1 more source

Plasmaspheric dynamics resulting from the hallowe'en 2003 geomagnetic storms [PDF]

, 2009
Cross-phase-derived plasma mass density trends during the Hallowe'en 2003 geomagnetic storms are presented for 38° magnetic latitude 63° (1.61 ≤ L ≤ 5.10), using data from the SAMNET (Subauroral Magnetometer Network), BGS (British Geological Survey), and
Zhang, T.L., Mann, I.R., Honary, Farideh, Kale, Z.C., Waters, C.L., Vellante, M.   +5 more
core  

A new solar windâ driven global dynamic plasmapause model: 1. Database and statistics [PDF]

, 2017
A large database, possibly the largest plasmapause location database, with 49,119 plasmapause crossing events from the in situ observations and 3957 plasmapause profiles (corresponding to 48,899 plasmapause locations in 1 h magnetic local time (MLT ...
Fei He, Roxanne M. Katus, Nakano, Shinya, Lin, Rui‐lin, Xiao‐Xin Zhang, Katus, Roxanne M., Mei‐Ching Fok, Liemohn, Michael W., He, Fei, Michael W. Liemohn, Zhang, Xiao Xin, Lin, Rui Lin, Rui‐Lin Lin, Fok, Mei Ching, Dennis L. Gallagher, Gallagher, Dennis L., Zhang, Xiao‐xin, Fok, Mei‐ching, Shinya Nakano   +18 more
core   +1 more source

Sub‐MeV Electron Precipitation Driven by EMIC Waves: New Insights From CIRBE/REPTile‐2 Measurements

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Electromagnetic ion cyclotron (EMIC) waves are recognized as a key driver of relativistic (>1 MeV) electron loss in Earth's magnetosphere. Growing evidence also suggests that EMIC wave can efficiently scatter sub‐MeV electrons, although the precise energy range and the underlying physical mechanisms remain debated.
Zheng Xiang, Xinlin Li, Daniel N. Baker, Declan O’Brien, Yang Mei, Ziye Zhang, Theodore Sarris, Michael A. Temerin   +7 more
wiley   +1 more source

A Predictive Model of the Position of Plasmapause Based on Lunar Phase and Deep Learning Framework

Geophysical Research Letters
The plasmapause position is crucial for understanding magnetospheric dynamics and space weather forecasting. This study pioneers the integration of lunar phase (LP) into plasmapause modeling using two neural network architectures (BP and fully connected ...
Yajun Li, Chao Xiao, Quanqi Shi, Hongtao Huang, Huizi Wang, Anmin Tian, Die Duan, Ganming Ren, Tao Tang, Yang Lin, Chenghao Li, Jiajia Suo   +11 more
doaj   +1 more source

A very bright SAR arc: implications for extreme magnetosphere-ionosphere coupling [PDF]

Annales Geophysicae, 2007
In contrast to the polar aurora visible during geomagnetic storms, stable auroral red (SAR) arcs offer a sub-visual manifestation of direct magnetosphere-ionosphere (M-I) coupling at midlatitudes.
J. Baumgardner, J. Wroten, J. Semeter, J. Kozyra, M. Buonsanto, P. Erickson, M. Mendillo   +6 more
doaj   +1 more source

First Observation of Sawtooth‐Like Undulations in Afternoon Detached Auroral Arcs Modulated by Surface Waves at the Plasmaspheric Plume Boundary

AGU Advances, Volume 7, Issue 3, June 2026.
Abstract The afternoon detached auroral arc is an important phenomenon in the subauroral region, reflecting coupling processes between the Earth's magnetosphere and ionosphere. Previous studies have not identified fine‐scale structures in such arcs, leaving the dynamics underlying their formation poorly understood.
Huiting Feng, Dedong Wang, Yixin Hao, Yoshizumi Miyoshi, Haobo Fu, Chae‐Woo Jun, Yuzhang Ma, Yongliang Zhang, Kazushi Asamura, Yoshiya Kasahara, Shoya Matsuda, Atsuki Shinbori, Fuminori Tsuchiya, Atsushi Kumamoto, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto, Iku Shinohara, Kazuo Shiokawa, Yuri. Y. Shprits   +19 more
wiley   +1 more source

Characteristics of precipitating energetic electron fluxes relative to the plasmapause during geomagnetic storms [PDF]

, 2014
In this study we investigate the link between precipitating electrons from the Van Allen radiation belts and the dynamical plasmapause. We consider electron precipitation observations from the Polar Orbiting Environmental Satellite (POES) constellation ...
Whittaker, Ian C., Clilverd, MA, Rodger, Craig J., Rodger, CJ, Whittaker, IC, Clilverd, Mark A., Craig J. Rodger, Mark A. Clilverd, Ian C. Whittaker   +8 more
core   +1 more source

A quantitative model for cyclotron wave-particle interactions at the plasmapause [PDF]

Annales Geophysicae, 1998
The formation of a zone of energetic electron precipitation by the plasmapause, a region of enhanced plasma density, following energetic particle injection during a magnetic storm, is analyzed.
D. L. Pasmanik, V. Y. Trakhtengerts, A. G. Demekhov, A. A. Lyubchich, E. E. Titova, T. Yahnina, M. J. Rycroft, J. Manninen, T. Turunen   +8 more
doaj   +1 more source

Dynamics of High‐Latitude Energy Conversion in the Upper Thermosphere Based on 9‐Year Measurements From FPI and Dynasonde in Tromsø, Norway

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract This study highlights the need to re‐evaluate energy transfer in the upper thermosphere at high latitudes through analysis of 9‐year measurements of neutral wind (u) from a Fabry‐Perot interferometer and ion velocity (v) from a Dynasonde in Tromsø, Norway.
S. Oyama, H. Vanhamäki, L. Cai, K. Hosokawa, K. Shiokawa, T. Sakanoi   +5 more
wiley   +1 more source