Results 51 to 60 of about 1,931,166 (164)

Equatorial F‐Region Responses to the Main Phase of the 10 May 2024 Geomagnetic Storm Over the South American Sector: Observations and Model Simulations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract This study examines the equatorial ionospheric response over the South American sector during the onset of the extreme 2024 Mother's Day geomagnetic storm, which began at ∼17 UT on 10 May and reached the G5 level. Pronounced disturbances in ionospheric electrodynamics were observed under both daytime and nighttime conditions. Variations in the
A. M. Santos, J. R. Souza, I. S. Batista, M. Bravo, C. G. M. Brum, J. H. A. Sobral, S. S. Chen, R. Sá, L. C. A. Resende, J. Moro, P. R. Jauer, L. da Silva, D. Medeiros, P. A. B. Nogueira, E. A. Kherani, V. F. Andrioli, M. A. Abdu, G. S. Adeniran, R. de Jesus, A. A. Pimenta, G. Yang, F. A. de Souza   +21 more
wiley   +1 more source

Modeling the effects of equatorial plasma bubbles on the oblique propagation of high-frequency electromagnetic waves

Frontiers in Astronomy and Space Sciences
The ionosphere, as an essential component of the Earth’s space environment, contains free electrons that influence the amplitude and phase of radio signals.
Ziyi Zhao, Lingyun Zhu, Chunhua Jiang, Tongxin Liu, Guobin Yang, Zhengyu Zhao, Zhengyu Zhao   +6 more
doaj   +1 more source

OI 630 nm Airglow Observed From Space as a Diagnostic of Nighttime Low‐Latitude Ionospheric Dynamics

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract This study investigates the nighttime morphology of the bottomside F region (∼250 km) at low latitudes using 630 nm airglow measurements from the Visible and Infrared Spectral Imager (VISI) aboard the Ionosphere, Mesosphere, Upper Atmosphere, and Plasmasphere (IMAP) mission on the International Space Station. For this purpose, we analyzed IMAP/
Hyosub Kil, Se‐Heon Jeong, Jeong‐Heon Kim, Woo Kyoung Lee, Young‐Sil Kwak, Akinori Saito, Takeshi Sakanoi   +6 more
wiley   +1 more source

Variation of Global Ionospheric Scintillation and Its Effect on GPS Kinematic PPP‐AR Performance During Geomagnetic Storms in Solar Cycle 25: A Statistical Analysis

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Enhanced small‐scale ionospheric irregularities during geomagnetic storms can disturb Global Navigation Satellite System (GNSS) carrier‐phase tracking and are associated with reduced stability of ambiguity‐fixed precise point positioning (PPP‐AR), but their impact on kinematic positioning remains insufficiently quantified.
Dongsheng Zhao, Qichen Zhao, Shuanglei Cui, Kefei Zhang, Longjiang Li, Wang Li, Zhongchao Shi, Craig M. Hancock   +7 more
wiley   +1 more source

equatorial plasma bubbles on the dayside

<p><span><span>This study investigates the impact of vertical ionospheric drift during daytime on the evolution of equatorial plasma bubbles by conducting model simulations using “Sami3 is Another Model of the Ionosphere&rdquo ...
Huba
core   +1 more source

Ionospheric Mechanisms Leading to Plasma‐Bubble Zonal Drift Reversal and Deformation During the 12 November 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 10, October 2026.
Abstract We present a multi‐instrument analysis of the ionospheric response to the intense geomagnetic storm of 12 November 2025 over the American sector, with emphasis on the longitudinally asymmetric deformation, latitudinal expansion, and zonal drift reversal of equatorial plasma bubbles (EPBs).
G. A. S. Picanço, I. Galkin, P. Song, E. Astafyeva, L. C. A. Resende, J. P. Marchezi, L. A. da Silva, P. R. Fagundes, C. M. Denardini, C. Martinis, A. M. Santos, V. G. Pillat, A. J. Coster, A. L. Christovam, S. R. Laranja, M. A. M. Lopes   +15 more
wiley   +1 more source

The measured motions inside equatorial plasma bubbles [PDF]

, 1986
A preliminary study of the vertical and north-south horizontal ion motions in plasma bubbles in the near-equatorial ionosphere utilizing drift meter data from Atmosphere Explorer E is presented. High resolution data show that the vertical ion velocity in
Bamgboye, D. K., Hanson, W. B.
core  

ScintPi 4.0: A New GNSS‐Based Low‐Cost, Multi‐Constellation, Multi‐Frequency Ionospheric Scintillation and TEC Monitor for Education, Citizen Science, and Research Initiatives

Space Weather, Volume 24, Issue 10, October 2026.
Abstract ScintPi is a series of alternative ionospheric scintillation and total electron content (TEC) monitors. ScintPi monitors have been built by combining single‐board computers (Raspberry Pi) and commercial off‐the‐shelf (COTS) Global Navigation Satellite System (GNSS) receivers.
Isaac G. Wright, Josemaria Gomez Socola, Fabiano S. Rodrigues, Mário A. N. Azevedo Filho   +3 more
wiley   +1 more source

Multi-instrument observations of ionospheric super plasma bubbles in the European longitude sector during the 23–24 April 2023 severe geomagnetic storm

Journal of Space Weather and Space Climate
This study’s objective is to better specify the rare occurrence of super equatorial plasma bubbles in particular to the European longitude sector, detailing their spatio-temporal evolution, and better understanding pre-conditions for their development ...
Zakharenkova Irina, Cherniak Iurii, Braun John J., Wu Qian, Sokolovskiy Sergey, Hunt Douglas, Weiss Jan-Peter   +6 more
doaj   +1 more source

Modeling Storm‐Time Post‐Midnight Equatorial Plasma Bubbles With SAMI3‐WACCMX: Impacts of Neutral Winds, Thermospheric Composition, and Atmospheric Waves

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract This study investigates the roles of neutral winds, composition and atmospheric waves in storm‐time post‐midnight equatorial plasma bubble (EPB) development using the coupled SAMI3‐WACCMX model. Simulations reveal the formation of post‐midnight EPBs extending beyond 1,500 km in altitude and persisting into the post‐sunrise period.
Min‐Yang Chou, J. D. Huba, Jack Wang, Jia Yue, Maksym Petrenko   +4 more
wiley   +1 more source