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Stratified Subauroral Ion Drift (SSAID)
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS. 2023. Vol. 128. No. 3. Article e2022JA031109.
In this paper, the internal structuring of Polarization Jet (PJ)/Subauroral Ion Drift (SAID) is
studied. It is shown that PJ/SAID consists of several Polarization Jet Strata (PJS) of electron density and
temperature. A new type of phenomena has been discovered called Stratified Subauroral Ion Drift (SSAID),
which is a PJ/SAID containing small-scale PJS. Internal small-scale structure of SSAIDs is measured during
various geomagnetic events using data from NorSat-1, DMSP F-17 and F-18 satellites. High resolution
measurements on the Norsat-1 satellite make it possible to detect and study small-scale structures inside the PJ/
SAID, that is, SSAID. The data from DMSP satellites is used to determine explicitly the presence of PJ/SAID
during the considered geomagnetic events. Results show that SSAID consist of 2–4 large PJS and from a few
units to several tens of small PJS. Large PJS have a size of 0.2°–0.3° latitude and small PJS have a size of <0.1°.
Several suggestions regarding possible physical mechanisms of production of SSAID and PJS are presented.
Воронеж: Издательский дом ВГУ, 2026.
В сборник вошли материалы XXXII Международной научно-технической конференции «Радиолокация, навигация, связь» (RLNC*2026), прошедшие ре цензирование членами программного комитета конференции. Основной целью конференции является организация взаимодействия научных и научно технических коллективов для обмена опытом и новыми творческими успехами. Достижение этой цели также способствует внедрению перспективных разрабо ток, имеющих практическое значение для дальнейшего развития промышленно сти, экономики ...
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Melnikov I., Pelinovsky E., Nonlinear Dynamics 2026 No. 114 Article 934
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Zhukov A., Kryzhanovskaya N., Moiseev E. et al., Nature 2026 Vol. 656 P. 80–85
Reaching lasing in electrically pumped microdevices based on solution-processed
semiconductors poses a substantial scientific and technological challenge. Halide
perovskites offer a promising platform for electrical injection1, as their optically
excited single-crystal cavities2–4 and predesigned5,6 or postprocessed microstructures7,8
have exhibited low lasing threshold. Indirect electrical pumping of a dual-cavity
perovskite laser was recently obtained9, using a well-established technological
concept of embedding a ...
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Shabanov N., Kuricheva O., Kurbatova J. et al., / Series Working Papers SSRN "Department of Economics Ca’ Foscari University of Venice". 2026.
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Gorbacheva A., Krenke A., Puzachenko M. et al., Geoderma Regional 2026 Vol. 46 Article e01124
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critical superstring, and extend this analysis to UðNÞ gauge theory with arbitrary even N and Nf = 2N
number of quarks. We introduce a special mass deformation and show that the SQCD hadron spectrum is
still given by the string spectrum on the ...
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The article presents a methodology for mapping coniferous forest decline, based on the integration of automated remote sensing data interpretation techniques, vegetation indices, remote sensing data on above-ground biomass (Biomass CCI (Climate Change Initiative)), and materials from ground-based forest pathology surveys using forests of the Khamar-Daban ridge (Republic of Buryatia) as a case study. The ...
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Ecology is the ideal field for studying complex, adaptive, and self-organizing systems and by observing and understanding ecosystems, it provides valuable insights into creating sustainable systems. This knowledge is ...
Added: August 9, 2026
Ponomarev A., Aleksandrov N., Journal of Physics D: Applied Physics 2026 Vol. 59 No. 31 Article 315205
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Khrapai V., Tikhonov E., Nature Physics 2026 P. 1198–1199
Feng et al.1 presented transport measurements of three-terminal normal–superconductor–normal devices based on topological insulator nanowires. They measured the full differential conductance matrix, defined as Gij = ∂Ii /∂Vj , beyond the linear response regime as a function of various control parameters. Here i, j∈ [1, 2] denote normal terminals biased by the voltages V1 and ...
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On July 29, 2025, a strong earthquake near Kamchatka (Russia) generated a tsunami that spread across the entire
Pacific Ocean. The tsunami had its strongest impact on the coast of the North Kuril Islands (Paramushir and Shumshu), causing significant destruction. During the first days after the earthquake, a field survey of tsunami traces on these islands was conducted in the area ...
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G. G. Bondarenko, Kristya V. I., Savichkin D. O. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2026 Vol. 20 No. 2 P. 417–423
A model of a glow gas discharge in a mixture of argon and mercury vapor is formulated in the presence
of a thin insulating film on the cathode surface. Dependences of the discharge characteristics on the
mixture temperature are calculated in the range of its variation, in which a noticeable contribution to ionization
of the working gas is ...
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A. A. Sinevich, A. A. Chernyshov, Chugunin D. V. et al., JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 2024 Vol. 129 No. 11 Article e2024JA033222
In this study, we employ a unique multi‐instrumental approach for a comprehensive examination of Polarization Jet (PJ) (or, another name, Subauroral Ion Drift (SAID)). A diverse set of data is used to assess the connection between the appearance of the inhomogeneous structure of PJ/SAID and its reflection in groundbased observations during geomagnetic activity. Our approach ...
Added: January 29, 2025
Sinevich A., Chernyshov A., Чугунин Д. В. et al., Известия РАН. Серия физическая 2024 Т. 88 № 3 С. 438–444
Results are presented from a study of the internal small-scale structure of the polarization jet/SAID using data from different satellites. The minimum size of irregularities and the typical internal composition of a stratified subauroral ion drift (SSAID) are confirmed. A two-peak structure is found that contains two large strata of the polarization jet/SAID. A shift ...
Added: January 29, 2025
Sinevich A., Chernyshov A., Чугунин Д. В. et al., Геомагнетизм и аэрономия 2023 Т. 63 № 6 С. 764–774
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 ...
Added: January 29, 2025
Sinevich A., Chernyshov A., Чугунин Д. В. et al., Космические исследования 2021 Т. 59 № 6 С. 489–497
In this work, we study the spatial structure of the polarization jet based on data from the NorSat-1 and Swarm ionospheric satellites during a geomagnetic storm. A comparative analysis of the electron density and temperature dependence on the invariant latitude is carried out simultaneously according to measurements of the NorSat-1 and Swarm C satellites during ...
Added: January 29, 2025