Abstract This study, for the first time, reports geomagnetically conjugate structure of a plasma bubble extending to mid-latitudes and asymmetrical decay during geomagnetic storm. We investigated temporal spatial variations bubbles in Asian sector storm on March 1, 2013, using Global Navigation Satellite System-total electron content data with high spatiotemporal resolutions. The important poin...

Under the influence of space weather, abnormal disturbances in ionosphere will distort model seriously and affect global navigation satellite system negatively. This study analyzes ionospheric activity characteristics performance low latitude during a strong geomagnetic storm from 7 to 9 September 2017. The research goals are determine behavior refine latitude. In experiment, vertical total ele...

Abstract. In this study, we examine the magnetospheric chaos and dynamical complexity response to disturbance storm time (Dst) solar wind electric field (VBs) during different categories of geomagnetic (minor, moderate major storm). The series data Dst VBs are analysed for a period 9 years using non-linear dynamics tools (maximal Lyapunov exponent, MLE; approximate entropy, ApEn; delay vector v...

During geomagnetic storms, ionospheric storms can be driven by several mechanisms. Observations performed using ground- and space-based instruments were used to reveal the driver of positive storm over South American sector during 4 November 2021 storm. The appeared from 10:30 UT 18:00 covered region 40°S 20°N. maximum magnitudes TEC (Total Electron Content) enhancement relative about 20 TECU 1...

Major solar eruptions occasionally direct interplanetary coronal mass ejections (ICMEs) to Earth and cause significant geomagnetic storms low-latitude aurorae. While single extreme are of threats the modern civilization, appear in sequence and, acting synergistically, 'perfect storms' at Earth. The stormy interval January 1938 was one such cases. Here, we analyze contemporary records reveal its...