Multi-space observations of the storm sudden commencement (September 2017) and its effect on the geomagnetic field. Issue 3 (1st August 2022)

• Record Type: Journal Article
• Authors: Mostafa, Nada; Ghamry, Essam; Ellithi, Ali; Gobashy, Mohamed; Fathy, Adel
• Is Part Of: Advances in space research. Volume 70:Issue 3(2022)
• Page Start: 641
• Page End: 651
• Publication Date: 2022-08-01
• Subjects: Sudden commencement -- Magnetosphere -- Relativistic electron depletions -- Geomagnetic storm; Space sciences -- Periodicals; Astronautics -- Periodicals; Geophysics -- Periodicals; 500.505
• DOI: 10.1016/j.asr.2022.04.023
• Languages: English
• ISSNs: 0273-1177

Abstract

Highlights: The storm sudden commencement (SCC) is the main indicator of the geomagnetic storm. The multi-space observations study gives a comprehensive view of SSC inside the magnetosphere. The SSC comprehensive view shows the spatial–temporal relation of SCC. IP shocks create SSC events during the storm of September 2017 and generate shock-induced relativistic electron depletions. Abstract: The present study describes the results of the magnetic field perturbations associated with the storm sudden commencement (SSC) during the geomagnetic storm in September 2017, and the shock-induced electron depletions in geosynchronous orbit. Multi-space observations were detected by ten various satellites with different orbits at distinct locations with a comprehensive view inside the magnetosphere. Magnetospheric Multiscale (MMS1) satellite is the only equipment that observed the SSC waveform as a sharp peak inside the daytime plasmasphere. Depending on SSC events of this storm, the largest Δ B H amplitude for SSC was at different satellite locations in the local noon sector (MLT = 11–15) and at L- shell values from 2 to 11 R E . The L-shell value has almost a linear relation with the delay time of the SSC onset and a reverse one with the Δ B H amplitude at the nightside. The dominated rise time value is 2 min at nightside. IP shocks of SSC events during this storm generate shock-induced relativistic electron depletions.