Studying the small-scale structure of a polarization jet during the April 20, 2018 geomagnetic storm
| Autor: | Michael Mogilevsky, Wojciech Jacek Miloch, Aleksandr Chernyshov, Dmitriy Chugunin, Aleksandr Sinevich |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Geomagnetic storm Atmospheric Science Jet (fluid) 010504 meteorology & atmospheric sciences Astrophysics::High Energy Astrophysical Phenomena subauroral ionosphere lcsh:Astrophysics Geophysics Polarization (waves) 01 natural sciences Space and Planetary Science Satellite data 0103 physical sciences Scale structure lcsh:QB460-466 Physics::Space Physics 010303 astronomy & astrophysics geomagnetic activity polarization jet satellite data 0105 earth and related environmental sciences |
| Zdroj: | Solar-Terrestrial Physics, Vol 7, Iss 1, Pp 17-26 (2021) |
| ISSN: | 2500-0535 |
| Popis: | In this work, we study the small-scale structure of a polarization jet in the subauroral region during the April 20, 2018 geomagnetic storm. We report measurement results of plasma parameters inside the polarization jet with a maximum sampling rate of up to 1 kHz, obtained with Langmuir probes installed on the NorSat-1 microsatellite. The study establishes the presence of temperature and electron density inhomogeneities inside the polarization jet with spatial dimensions of tens to hundreds of meters. The previously known features of the polarization jet evolution have been confirmed. We have also found that the distribution of the electron temperature inside the jet forms two separate peaks as the geomagnetic activity develops during the storm. |
| Databáze: | OpenAIRE |
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