Publication Date:
2021-05-31
Description:
In the polar ionosphere, the electric field is characterized by broadband and power law
spectral densities at small/short spatio-temporal scales, which support a possible turbulent nature
of the electric field fluctuations. Here, we investigate the multifractal character of the full three-dimensional
electric field in the polar ionosphere as recorded on board the first Chinese Seismo-
Electromagnetic Satellite (CSES-01). The results of our analysis prove a clear different degree of
multifractality of the electric field fluctuations approaching either the polar cap trailing edge or the
auroral region. The observed differences in the multifractal character are interpreted in terms of the
different natures of the particle precipitation in the polar cap and in the auroral region. A possible
link between the multifractal nature of electric field fluctuations, parallel to the geomagnetic field,
and filamentation of field aligned currents (FACs) is established
Description:
Contract ASI “LIMADOU Scienza+” n 2020-31-HH.0
PNRA18 00289-A “Space weather in Polar Ionosphere: the Role of Turbulence”.
Description:
Published
Description:
646
Description:
2A. Fisica dell'alta atmosfera
Description:
JCR Journal
Keywords:
auroral ionosphere
;
electric field
;
Turbulence
;
Fractals
;
01.02. Ionosphere
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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