Results 81 to 90 of about 184,127 (275)

Radar observations of ionospheric irregularities at Syowa Station, Antarctica: a brief overview [PDF]

Annales Geophysicae, 1996
We briefly overview the radar observations that have been made for 30 years at Syowa Station, Antarctica for studying small-scale electron-density irregularities in the southern high-latitude E- and F-region ionosphere. Some observational results (i.e.
T. Ogawa
doaj   +1 more source

Towards the azimuthal characteristics of ionospheric and seismic effects of "Chelyabinsk" meteorite fall according to the data from coherent radar, GPS and seismic networks

, 2015
We present the results of a study of the azimuthal characteristics of ionospheric and seismic effects of the meteorite 'Chelyabinsk', based on the data from the network of GPS receivers, coherent decameter radar EKB SuperDARN and network of seismic ...
Bakhtiyarov, V. F., Berngardt, O. I., Dobrynina, A. A., Kusonsky, O. A., Kutelev, K. A., Perevalova, N. P., Shestakov, N. V., Zagretdinov, R. V., Zherebtsov, G. A.   +8 more
core   +1 more source

Topside Ionization and Effect on Altitudinal Evolution of Nocturnal Ionospheric Irregularities

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Topside ionospheric electron density (Ne) and its control on the variabilities in nocturnal ionospheric irregularities is examined globally using electron density measurements from COSMIC‐2 and Swarm satellite, along with the Swarm satellite‐based Ionospheric Plasma Irregularity (IPIR) index for low and high solar activity (LSA and HSA ...
T. V. Sruthi, G. Manju
wiley   +1 more source

Regional Medium‐Scale Traveling Ionospheric Disturbance Propagation Model Based on BDS GEO Satellites

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Accurate modeling of traveling ionospheric disturbances (TIDs) is essential for characterizing their spatiotemporal variations and mitigating their effects on Global Navigation Satellite System (GNSS) precise positioning. This study develops a regional medium‐scale TID (MSTID) propagation model using BeiDou geostationary orbit (GEO) total ...
Dengkui Mei, Xiaohong Zhang, Xiaodong Ren, Xuan Le, Wentao Yang, Ahmed Abdelaziz   +5 more
wiley   +1 more source

Drifting Ionospheric Scintillation Simulation for L-Band Geosynchronous SAR

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
An L-band geosynchronous synthetic aperture radar (GEO SAR) is susceptible to the ionospheric scintillation induced by ionospheric irregularities due to its lower carrier frequency.
Feixiang Tang, Yifei Ji, Yongsheng Zhang, Zhen Dong, Zhaokai Wang, Qingjun Zhang, Bingji Zhao, Heli Gao   +7 more
doaj   +1 more source

Irregularities Observed at the Edge of a Mid‐Latitude Ionospheric Depletion Following a Geomagnetic Storm [PDF]

, 2023
J. F. Helmboldt
openalex   +1 more source

On Inconsistent ROTI Derived From Multiconstellation GNSS Measurements of Globally Distributed GNSS Receivers for Ionospheric Irregularities Characterization

Radio Science, 2019
This study for the first time presents an investigation into the exploitation of multi‐Global Navigation Satellite System (GNSS) observations (Global Positioning System, Globalnaya Navigazionnaya Sputnikovaya Sistema, Galileo, and BeiDou) to characterize
Zhizhao Liu, Zhe Yang, Dongyang Xu, Y. Morton   +3 more
semanticscholar   +1 more source

Freshly Generated Super Sunrise Plasma Bubbles During the Geomagnetic Storm on November 5–6, 2023

Space Weather, Volume 24, Issue 1, January 2026.
Abstract During the geomagnetic storm on November 5–6, 2023, freshly generated super sunrise equatorial plasma bubbles (EPBs) and associated irregularities over the 80°–140°E sector were observed combining ground‐based and space observations from GNSS, ionosondes, HF Doppler records, and several satellite missions (COSMIC2, Swarm, and DMSP).
Ke Li, Donghe Zhang, Yaoyu Tian, Yi Zeng, Guanglin Yang, Xiukuan Zhao, Guozhu Li, Yongqiang Hao   +7 more
wiley   +1 more source

Longitudinal and Seasonal Variability of Equatorial Ionospheric Irregularities and Electrodynamics

Space Weather, 2018
Over the past decades significant progresses have been done to understand the origin of seeding mechanisms of ionospheric irregularities. However, characterization of the global ionospheric irregularities as a function of local time, longitude, and ...
E. Yizengaw, K. Groves
semanticscholar   +1 more source

Evidence and Causes of an Unusual Super Plasma Bubble Occurrence During Weak Geomagnetic Conditions Over Europe

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Using data from a cluster of ground‐based global navigation satellite system, we observed spatially extended enhanced ROTI over the European longitudes during a weak geomagnetic storm (Dst ≈ ${\approx} $ −50 nT) on 4 November 2023. The enhanced ROTI is extended over an extensive geographical latitudinal range of 46°N.
Chandan Kapil, Mani Sivakandan, Jorge Chau, Gopi K. Seemala, David Altadill   +4 more
wiley   +1 more source