In this paper the interrelation between geomagnetic pulsations and variations in frequency Doppler shift (Fd) of the ionosphere-reflected radio signal is under investigation. The experiment on simultaneous recording of Fd variations and geomagnetic pulsations was organised at high latitude station in Norilsk (geomagnetic latitude and longitude 64.2 N, 160.4 E, L=5.3) during Febrary-April of 1995-98. Thirty cases of simultaneous recording of duration from 10 min to two hour were analysed: 6 cases of simultaneous recording of variations Fd and regular geomagnetic pulsations Pc5; and 25 cases of recording of Fd variations and irregular pulsations Pi2.
On the basis of experimental results, the following conclusions have been drawn: a) Hydromagnetic waves in the range of regular Pc5 pulsations, when interacting with the ionospheric F2 layer, make the main contribution to short-period Fd variations. The possible mechanism of Fd variations are oscillations of electron density, associated with distribution of a hydromagnetic wave in an ionosphere. b) There exists an unquestionable interrelation between Fd variations of the sporadic E layer-reflected radio signal and irregular Pi2 pulsations, but for some reasons it is traced poorly.
Multi-instrument constraints on a hemispherically asymmetric positive ionospheric storm in the 60-180 deg E sector during the 12-13 November 2025 geomagnetic storm
Institute of Earthquake Forecasting, China Earthquake Administration（中国地震局地震预测研究所）；National Space Science Center, Chinese Academy of Sciences（中国科学院国家空间科学中心）；Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University（香港理工大学土地测量及地理资讯学系）；Istituto Nazionale di Geofisica e Vulcanologia（意大利国家地球物理与火山学研究所）；Space Research Institute, Russian Academy of Sciences（俄罗斯科学院太空研究所）
Datasets of the solar quiet (Sq) and solar disturbed (SD) variations of the geomagnetic field from the mid latitudinal Magnetic Observatory of Coimbra (Portugal) obtained by different methods
Predicting low-latitude ionospheric Total Electron Content (TEC) over the Indian sector under variable space weather conditions using solar wind parameters
Indian Institute of Geomagnetism（印度地磁研究所）；School of Environmental Science, Jawaharlal Nehru University（贾瓦哈拉尔·尼赫鲁大学环境科学学院）
Semi-annual, annual and Universal Time variations in the magnetosphere and in geomagnetic activity: 4. Polar Cap motions and origins of the Universal Time effect
Temporal Correlation between Ionospheric Storm-Enhanced Density Plume and Plasmaspheric Plume Occurrence
Laboratory for Atmospheric and Space Physics, University of Colorado Boulder（科罗拉多大学博尔德分校大气与空间物理实验室）；Haystack Observatory, Massachusetts Institute of Technology（麻省理工学院海斯塔克天文台）；Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles（加州大学洛杉矶分校大气与海洋科学系）；Space Science Department, Southwest Research Institute（西南研究所空间科学部）；Department of Physics and Astronomy, University of Texas at San Antonio（得克萨斯大学圣安东尼奥分校物理与天文学系）；Stochastic Research Institute（随机性研究所）；University of New Mexico（新墨西哥大学）；Astrophysical and Planetary Sciences Department, University of Colorado, Boulder（科罗拉多大学博尔德分校天体物理与行星科学系）
A novel method to identify IMF $B_y$ influence over low-latitude ionosphere from the correlation of magnetic field variations at nearly antipodal stations
Influence of ICME-driven Magnetic Cloud-like and Sheath Region induced Geomagnetic Storms in causing anomalous responses of the Low-latitude Ionosphere: A Case Study
