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The Internal Structure of a Polarization Jet/SAID: A Stratified Polarization Jet/SAID

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Abstract

The results of a study of the small-scale internal structure of a polarization jet/SAID (Subauroral Ion Drift) based on satellite data using the wavelet transform of ionospheric plasma parameters are presented. The minimum sizes of small-scale temperature and electron density irregularities are determined. Most likely, any polarization jet/SAID is stratified, as follows from the sample used in this work. It is shown that the wavelet transform is a convenient tool for studying the internal small-scale structure of the polarization jet/SAID, and the irregularities are better seen in the electron temperature power spectrograms than in the electron density spectrograms.

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5. ACKNOWLEDGMENTS

NorSat-1 data are available on the website (http://tid.uio.no/plasma/norsat). DMSP mission data can be downloaded from the NOAA website (https:// s-atdat.ngdc.noaa.gov/dmsp/data/).

Funding

This work was supported by the Russian Science Foundation grant no. 23-22-00133.

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Authors and Affiliations

  1. Space Research Institute, Russian Academy of Sciences, (IKI RAN), Moscow, Russia

    A. A. Sinevich, A. A. Chernyshov, D. V. Chugunin & M. M. Mogilevsky

  2. Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation, Russian Academy of Sciences (IZMIRAN), Moscow, Troitsk, Russia

    A. A. Sinevich

  3. Department of Physics, University of Oslo, Oslo, Norway

    W. J. Miloch

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  1. A. A. Sinevich
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Sinevich, A.A., Chernyshov, A.A., Chugunin, D.V. et al. The Internal Structure of a Polarization Jet/SAID: A Stratified Polarization Jet/SAID. Geomagn. Aeron. 63, 747–756 (2023). https://doi.org/10.1134/S0016793223600583

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