Results 11 to 20 of about 447,486 (188)

Quiet Time Ionopheric Irregularities Over the African Equatorial Ionization Anomaly Region [PDF]

Radio Science, 2020
AbstractThis paper investigated variations of quiet time ionospheric irregularities over the African equatorial ionization anomaly using the rate of change of total electron content index. Irregularities were quantified in terms of percentage occurrence and examined along with parameter of the anomaly, mainly its strength and the asymmetry of the ...
Zouhair Benkhaldoun, Elijah Oyeyemi, Christine Amory-Mazaudier   +2 more
exaly   +5 more sources

Equatorial Ionization Anomaly Crest Position and Width Modeling

Space Weather
Knowing the locations and widths of the Northern and Southern Equatorial Ionization Anomaly (EIA) crests is essential for characterizing the spatiotemporal and solar activity variations of the low latitude ionosphere. The crest region is characterized by
Melessew Nigussie, Norbert Jakowski, Mainul Hoque   +2 more
doaj   +3 more sources

Post‐Sunset Merging of Equatorial Ionization Anomaly Crests Into a Single Peak Over ∼35° Longitude During the 19 January 2026 Geomagnetic Superstorm

Geophysical Research Letters
We investigate the nighttime equatorial ionosphere during the 19 January 2026 geomagnetic storm using Global‐scale Observations of the Limb and Disk OI 135.6 nm observations and ground‐based GPS Total Electron Content.
Deepak K. Karan, Richard W. Eastes, Kuldeep Pandey, Wenbin Wang, Carlos R. Martinis, Robert E. Daniell, Quan Gan   +6 more
doaj   +3 more sources

Occurrence of Ionospheric Equatorial Ionization Anomaly at 840 km Height Observed by the DMSP Satellites at Solar Maximum Dusk

Space Weather, 2021
Although it is accepted that the electron density double peaks of the Equatorial Ionization Anomaly (EIA) generally merge into a single‐peak with increasing altitude and thus the signature of EIA becomes inconspicuous in the higher topside ionosphere, it
Jiacheng Li, Yiding Chen, Libo Liu, Huijun Le, Ruilong Zhang, He Huang, Wenbo Li   +6 more
doaj   +2 more sources

Observations of equatorial ionization anomaly over Africa and Middle East during a year of deep minimum [PDF]

Annales Geophysicae, 2017
In this work, we investigated the veracity of an ion continuity equation in controlling equatorial ionization anomaly (EIA) morphology using total electron content (TEC) of 22 GPS receivers and three ground-based magnetometers (Magnetic Data ...
O. Bolaji, O. Bolaji, O. Owolabi, E. Falayi, E. Jimoh, A. Kotoye, O. Odeyemi, B. Rabiu, P. Doherty, E. Yizengaw, Y. Yamazaki, J. Adeniyi, R. Kaka, K. Onanuga   +13 more
doaj   +8 more sources

A Novel Technique for High-Precision Ionospheric VTEC Estimation and Prediction at the Equatorial Ionization Anomaly Region: A Case Study over Haikou Station

Remote Sensing, 2023
This paper introduces a novel technique that uses observation data from GNSS to estimate the ionospheric vertical total electron content (VTEC) using the Kriging–Kalman method.
Hai-Ning Wang, Qing-Lin Zhu, Xiang Dong, Dong-Sheng Sheng, Yong-Feng Zhi, Chen Zhou, Bin Xu   +6 more
doaj   +2 more sources

Equatorial Ionization Anomaly Discontinuity Observed by GOLD, COSMIC‐2, and Ground‐Based GPS Receivers' Network [PDF]

Geophysical Research Letters, 2023
We report a new ionosphere phenomenon: Equatorial ionization anomaly (EIA) discontinuity (EIAD), based on OI 135.6 nm radiance observations from the Global Observations of Limb and Disk (GOLD), ground‐based total electron content maps and in‐situ ion ...
Xuguang Cai, Wenbin Wang, Richard W. Eastes, Liying Qian, Nicholas.M. Pedatella, Ercha Aa, Shunrong Zhang, Anthea Coster, Robert E. Daniell, William E. McClintock   +9 more
doaj   +2 more sources

Quasi-16-day periodic meridional movement of the equatorial ionization anomaly [PDF]

Annales Geophysicae, 2014
Based on the daytime location of the equatorial ionization anomaly (EIA) crest derived from GPS observations at low latitude over China during the 2005–2006 stratospheric sudden warming (SSW), a quasi-16-day periodic meridional movement of EIA crest ...
X. H. Mo, X. H. Mo, D. H. Zhang, L. P. Goncharenko, Y. Q. Hao, Z. Xiao   +5 more
doaj   +5 more sources

Study of the Spatiotemporal Characteristics of the Equatorial Ionization Anomaly Using Shipborne Multi-GNSS Data: A Case Analysis (120–150°E, Western Pacific Ocean, 2014–2015)

Remote Sensing, 2021
Ground-based GNSS (Global Navigation Satellite System) reference stations lack the capacity to provide data for ocean regions with sufficient spatial-temporal resolution, limiting the detailed study of the equatorial ionization anomaly (EIA).
Xiaowen Luo, Di Wang, Jinling Wang, Ziyin Wu, Jinyao Gao, Tao Zhang, Chunguo Yang, Xiaoming Qin, Xiaolun Chen   +8 more
doaj   +3 more sources

The time delay between the equatorial ionization anomaly and the equatorial electrojet in the eastern Asian and American sectors

Advances in Space Research, 2022
Abstract The daily evolution of the Equatorial Ionization Anomaly (EIA) and the Equatorial Electrojet (EEJ) exhibits phase difference, which reflects the response time of the F-region equatorial plasma fountain to the E-region electric field variation.
Jing Liu, Yong-Qiang Hao, Donghe Zhang   +2 more
exaly   +2 more sources