Peculiarities of acoustic-gravity waves in inhomogeneous flows of the polar thermosphere

Fedorenko, A.K.; Kryuchkov, E. I.; Cheremnykh, O. K.; Klymenko, Yu.O.; Yampolski, Yu. M.

doi:10.1016/j.jastp.2018.05.009

Cited by 32 publications

(16 citation statements)

References 27 publications

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“…There is a noticeable increase in the number of publications in domestic and foreign scientific editions that are indexed in the bibliographic database Scopus (for example, in Cytology and Genetics, Journal of Atmospheric and Solar-Terrestrial Physics, Polar Biology, Polar Science, etc.) (Fedorenko, 2018;Galuk, 2018;Ishchenko, 2018;Kaczmarek, 2018;Rabokon, 2019).…”

Section: Resultsmentioning

confidence: 99%

“…31-36. 230. Радиофизические комплексы мониторинга космической погоды в Украине и в Антарктике / А. В. Зализовс-N. G. Videnina, V. P. Rybachuk, A. P. Fedchuk, S. I. Prymachenko, N. S. Petrenko Н. Г. Віденіна 1 , В. П. Рибачук 1, 2, *, А. П. Федчук 2 , С. І. Примаченко 1,2 , Н. С. Петренко 1, 2 1 Державна установа «Інститут досліджень науково-технічного потенціалу та історії науки ім. Г. М. Доброва НАН України»; Київ 2 Державна установа Національний антарктичний науковий центр МОН України Київ * Corresponding author: rybachuk.victor@gmail.com, rybachuk.v.p@nas.gov.ua АНТАРКТИЧНА БІБЛІОГРАФІЯ УКРАЇНИ: ПУБЛІКАЦІЇ 2016-2018 рр.…”

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Ukrainian Antarctic Bibliography: Publications in 2016–2018

Videnina

Potential

Rybachuk

et al. 2019

UAJ

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Objectives of the study is to monitor the modern national scientific literature on Antarctic research, first of all, as an element of systematic information and bibliographic as well as scientometric support for the implementation of state scientific and technical programs. Methods: bibliographic search, scientometric analysis, bibliometric analysis, webometric analysis, and expert analysis. Ukrainian scientific journals, collections of scientific works and reference editions, scientific reports on projects for the implementation of the State Special-Purpose Research Program in Antarctica for 2011-2020, as well as national ("Scientific Ukraine", "Bibliometryka of Ukrainian Science", "Scientific Periodicals of Ukraine", etc.) and foreign bibliographic databases (Scopus, Google Scholar, e-Library, and others.) were used as the main information source for compiling the bibliography. Results: The article presents the results of a bibliographic search and scientometric analysis of the scientific works of Ukrainian scholars and professionals, published in domestic and foreign editions, as well as in materials of international bodies of the Antarctic Treaty system in 2016-2018. The bibliographic descriptions of 353 publications, the most of which are articles in periodicals (143 descriptions) as well as conference and symposia proceedings (162 descriptions), are given. The bibliometric analysis of the data obtained reveals a stable strong dynamics of the publication activity of Ukrainian researchers and their significant contribution to the world researches of Antarctica. There is a noticeable increase in the number of publications in domestic and foreign scientific editions that are indexed in the bibliographic database Scopus. According to the portal of Scientific Periodicals of Ukraine of the Vernadsky National Library of Ukraine of the NAS of Ukraine the level of relevance of publications in the Ukrainian Antarctic Journal (2007-2017) is defined. It is revealed that the bibliographic and scientometric articles are included in the top-groups of publications in the journal and have a positive trend of users demand. Conclusions: the list of current bibliography presented in the article complements and continues the bibliography of domestic publications for 2007-2015, which was submitted in previous issues of the Ukrainian Antarctic Journal (in 2009, 2010, 2012, and 2016). The bibliographic descriptions given create a factual basis for the scientometric and expert analysis of development trends and research results of domestic scientists and specialists as well as determination of the contribution of Ukraine to modern Antarctic research. The data obtained indicates the expediency of further implementation of bibliographic support of the State research programs of Ukraine in Antarctica as well as a regular publication of the current and retrospective national Antarctic scientific bibliography.

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Section: Resultsmentioning

confidence: 99%

Section: Possible Role Of Electric Forces In Bromine Activation Durinunclassified

Ukrainian Antarctic Bibliography: Publications in 2016–2018

Videnina

Potential

Rybachuk

et al. 2019

UAJ

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“…The results presented in Fig. 1 were obtained for high-latitude (ϕ ≤ π/2 ) regions of the Earth's atmosphere, which recently have been intensively studied [23,25,41,42]. When constructing models of acoustic-gravity waves in these areas, we can restrict ourselves to taking into account only the vertical component of the Earth's rotation speed.…”

Section: Introductionmentioning

confidence: 99%

“…Note that acoustic-gravity waves with frequencies about of the Earth's rotational frequency lie in the same frequency range as the well-known Rossby waves [44,45]. The latter play an important role in the dynamics of the Earth's atmosphere and ocean [23,46]. Therefore, the study of acoustic-gravity waves with frequencies about of frequency of the Earth's rotation is an urgent geophysical problem.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Earth's atmosphere rotation on the spectrum of acoustic-gravity waves

Cheremnykh,

Vlasov

2022

Preprint

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It was shown in a recent paper by Cheremnykh et al. (Advances in Space Research, 2022) that taking into account the rotation of the Earth's atmosphere leads to the appearance of a new region of evanescent waves with a continuous frequency spectrum on the diagnostic diagram of acoustic-gravity waves. The region is located below the lower limit of gravity waves, which is equal 2Ω at all wavelengths, where Ω is the angular frequency of the atmosphere rotation. This result was obtained for high-latitude regions of the atmosphere, in which we can limit ourselves to considering only the vertical component of the Earth's rotation frequency. In the proposed paper we show that taking into account both components of the vector of the atmosphere rotation frequency − → Ω -horizontal, Ω cos ϕ , and vertical, Ω sin ϕ, where ϕ is the Earth's latitude, the dominant role in the acoustic-gravity waves propagation is played by the vertical component. It is shown that the horizontal component leads to an insignificant modification on the diagnostic diagram of the boundaries of the areas of acoustic and gravity waves, which can be neglected. Also shown that the strongest vertical component of the frequency affects the lower limit of gravity waves, which depends at all wavelengths on the latitude of the observation site and is equal to 2Ω sin ϕ.

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“…Azimuths of the propagation of these AGW demonstrate the close connection with the directions of background winds in the thermosphere. Moreover, the amplitudes of the waves depend on the speed of headwind but do not depend on height (Fedorenko and Kryuchkov, 2013;Fedorenko et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Evanescent acoustic-gravity modes in the isothermal atmosphere: systematization, applications to the earth's and solar atmospheres

Cheremnykh¹,

Fedorenko²,

Kryuchkov³

et al. 2019

Preprint

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Abstract. The objects of research in this work are evanescent wave modes in a gravitationally stratified atmosphere and their associated pseudo-modes. Whereas the former, according to the dispersion relation, rapidly decrease with distance from a certain surface, the latter, having the same dispersion law, differ from the first by the form of polarization and the character of its decreasing away from the surface. Within a linear hydrodynamic model, the propagation features of evanescent wave modes in an isothermal atmosphere are studied. Research carried out for different assumptions about the properties of the medium. On this way, a new wave mode – anelastic evanescent wave mode – was discovered. Also, the possibility of the existence of a pseudo-mode related to it is indicated. The case of two isothermal media differing in temperature at the interface is studied in detail. It is shown that a non-divergent pseudo-mode with the dispersion of solar f-mode type can be realized on the interface for the specified horizontal scale. The newly discovered dispersion relation, at the interface of two media, is satisfied by the wave mode, which has different types of amplitude versus height dependencies at different horizontal scales. The applicability of the obtained results to clarify the properties of f-mode observed on the Sun is analyzed.

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Peculiarities of acoustic-gravity waves in inhomogeneous flows of the polar thermosphere

Cited by 32 publications

References 27 publications

Ukrainian Antarctic Bibliography: Publications in 2016–2018

Ukrainian Antarctic Bibliography: Publications in 2016–2018

Influence of the Earth's atmosphere rotation on the spectrum of acoustic-gravity waves

Evanescent acoustic-gravity modes in the isothermal atmosphere: systematization, applications to the earth's and solar atmospheres

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