Results 71 to 80 of about 474,530 (188)

Characteristics of Longitudinal Discontinuity Over Nighttime Equatorial Ionization Anomaly Crests With Multiple Observations [PDF]

Longitudinal discontinuity is observed over nighttime equatorial ionization anomaly (EIA) crests, characterized by a significant depletion between longitudes. Multiple observations, especially GOLD 135.6-nm airglow images, are used to investigate the EIA
Tang, Zijing, Zhong, Jiahao, Cai, Lei, Kuai, Jiawei, Cai, Lujin, Wan, Xin, Li, Qiaoling, Song, Xingyan, Hao, Yongqiang, Cai, Xuguang, Han, Hao, Chen, Jiawen   +11 more
core   +1 more source

Global Ionospheric TEC Forecasting Driven by a Unified Physical Index System via the Spectral Whitening Method

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Accurate forecasting of global ionospheric total electron content (TEC) is important for Global Navigation Satellite Systems (GNSS) performance and satellite communications. This study proposes a driver framework based on the spectral whitening method (SWM). We combine a new high‐latitude geomagnetic disturbance index with previously developed
Zhou Chen, Jiahao Sun, Jing‐song Wang, Yiwan Deng, Jianxiang Zhang, Jiahao Zeng, Lewei Fan, Zichen Xu, Jian Song, Shourong Lu   +9 more
wiley   +1 more source

Physics‐Based Ensemble of Models for F2 Peak Parameters of the Ionosphere: Comparison With COSMIC‐2 Measurements

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Space weather events can significantly alter the ionospheric electron density, affecting signal transmission and navigation accuracy in satellite‐based systems. Consequently, there is an urgent need for reliable forecasting of the Thermosphere‐Ionosphere (TI) system.
J. Pereira, I. Fernandez‐Gomez, F. Heymann, F. Günzkofer, C. Borries, M. Schmidt   +5 more
wiley   +1 more source

Four‐Peak Structure on Equatorial Ionization Anomaly Crests During the May 2024 Geomagnetic Storms [PDF]

This study investigates the four-peak electron density structure in the Equatorial Ionization Anomaly (EIA) during the intense geomagnetic storms of 10–20 May 2024, utilizing dayside data at ∼500 km from the China Seismo-Electromagnetic Satellite (CSES ...
Giulia D’Angelo, Zeren Zhima, Zihang Wang, Chao Xiong, Weixing Pu, Roberto Battiston, Piersanti Mirko, Yanyan Yang, Rui Yan, Yuyang Huang, He Huang, Shun-Rong Zhang, Xiaoying Sun   +12 more
core   +1 more source

Reconfiguration of Mercury's Exosphere During Strong Space Weather Events

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Mercury is exposed to various space weathering processes, which alter the surface and cause emission of atoms and molecules into the exosphere. The exosphere thus allows remote insights into the surface composition and erosion processes, with the emission of refractory elements such as Ca and Mg typically being dominated by micrometeoroid ...
P. S. Szabo, S. R. Carberry Mogan, A. R. Poppe, S. Fatemi, W. J. Sun, J. T. Zhao   +5 more
wiley   +1 more source

Positive and negative ionospheric disturbances prior to the 2016 christmas earthquake in Chile

Geomatics, Natural Hazards & Risk, 2019
Global ionospheric maps (GIMs) provided by the Center for Orbit Determination in Europe (CODE) served to analyze ionospheric disturbances prior to the December 25, 2016 earthquake in Chile.
C. Sotomayor-Beltran
doaj   +1 more source

A comparison of ionospheric TEC between the South Atlantic anomaly region and the Indian Ocean region based on TIEGCM simulations in 2002

Frontiers in Physics
Using the Thermosphere-Ionosphere-Electrodynamic General Circulation Model (TIEGCM), a comparison of the ionospheric total electron content (TEC) between the South Atlantic anomaly (SAA) and the Indian Ocean (IO) at solar maximum is performed in this ...
Zheng Li, Zheng Li, Yan Wang, Jingjing Shao, Luyao Wang, Jingyuan Li, Hua Zhang, Xiaojun Xu, Chunli Gu   +8 more
doaj   +1 more source

Effect of equatorial ionization anomaly on the occurrence of spread-F

, 2014
. The unique geometry of the geomagnetic field lines over the equatorial ionosphere coupled with the E– W electric field causes the equatorial ionization anomaly (EIA) and equatorial spread-F (ESF).
V. V. Somayajulu, P. V. S. Rama Rao, P. T. Jayach, P. Sri Ram   +3 more
core  

The Poleward Shift of the Equatorial Ionization Anomaly During the Main Phase of the Superstorm on 10 May 2024

Remote Sensing
On 10 May 2024, a super geomagnetic storm with a minimum Dst index of less than −400 nT occurred. It has attracted a significant amount of attention in the literature.
Di Bai, Yijun Fu, Chunyong Yang, Kedeng Zhang, Yongqiang Cui   +4 more
doaj   +1 more source

Time variations of the total electron content in the Southeast Asian equatorial ionization anomaly for the period 2006-2011

, 2013
International audienceThis study presents the time variations of the total electron content in the South East Asian equatorial ionization anomaly. The time variation of the TEC is analyzed through the period 2006-2011 by using a latitudinal chain of GPS ...
Bourdillon, Alain, Le Huy, Minh, Vila, Paul, Lassudrie Duchesne, Patrick, Amory-Mazaudier, Christine, Nguyen Chien, Thang, Nguyen Ha, T, Fleury, Rolland   +7 more
core   +1 more source