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On Turbulent Features of E × B Plasma Motion in the Auroral Topside Ionosphere: Some Results from CSES-01 Satellite
Language
English
Obiettivo Specifico
2A. Fisica dell'alta atmosfera
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
/14 (2022)
ISSN
2072-4292
Publisher
MDPI
Pages (printed)
1936
Issued date
April 17, 2022
Subjects
Abstract
The recent Chinese Seismo-Electromagnetic Satellite (CSES-01) provides a good opportunity
to investigate some features of plasma properties and its motion in the topside ionosphere. Using
simultaneous measurements from the electric field detector and the magnetometers onboard CSES-01,
we investigate some properties of the plasma ExB drift velocity for a case study during a crossing of
the Southern auroral region in the topside ionosphere. In detail, we analyze the spectral and scaling
features of the plasma drift velocity and provide evidence of the turbulent character of the ExB drift.
Our results provide an evidence of the occurrence of 2D ExB intermittent convective turbulence for
the plasma motion in the topside ionospheric F2 auroral region at scales from tens of meters to tens
of kilometers. The intermittent character of the observed turbulence suggests that the macro-scale
intermittent structure is isomorphic with a quasi-1D fractal structure, as happens, for example, in
the case of a filamentary or thin-tube-like structure. Furthermore, in the analyzed range of scales we
found that both magnetohydrodynamic and kinetic processes may affect the plasma dynamics at
spatial scales below 2 km. The results are discussed and compared with previous results reported in
the literature.
to investigate some features of plasma properties and its motion in the topside ionosphere. Using
simultaneous measurements from the electric field detector and the magnetometers onboard CSES-01,
we investigate some properties of the plasma ExB drift velocity for a case study during a crossing of
the Southern auroral region in the topside ionosphere. In detail, we analyze the spectral and scaling
features of the plasma drift velocity and provide evidence of the turbulent character of the ExB drift.
Our results provide an evidence of the occurrence of 2D ExB intermittent convective turbulence for
the plasma motion in the topside ionospheric F2 auroral region at scales from tens of meters to tens
of kilometers. The intermittent character of the observed turbulence suggests that the macro-scale
intermittent structure is isomorphic with a quasi-1D fractal structure, as happens, for example, in
the case of a filamentary or thin-tube-like structure. Furthermore, in the analyzed range of scales we
found that both magnetohydrodynamic and kinetic processes may affect the plasma dynamics at
spatial scales below 2 km. The results are discussed and compared with previous results reported in
the literature.
Type
article
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Open Access published article
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