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285 results on '"Ermakova O"'

1. Internal gravity waves in the energy and flux budget turbulence-closure theory for shear-free stably stratified flows

Author

Kleeorin, N., Rogachevskii, I., Soustova, I. A., Troitskaya, Yu. I., Ermakova, O. S., and Zilitinkevich, S.

Subjects
Physics - Atmospheric and Oceanic Physics, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics, Physics - Fluid Dynamics, Physics - Geophysics
Abstract

We have advanced the energy and flux budget (EFB) turbulence closure theory that takes into account a two-way coupling between internal gravity waves (IGW) and the shear-free stably stratified turbulence. This theory is based on the budget equation for the total (kinetic plus potential) energy of IGW, the budget equations for the kinetic and potential energies of fluid turbulence, and turbulent fluxes of potential temperature for waves and fluid flow. The waves emitted at a certain level, propagate upward, and the losses of wave energy cause the production of turbulence energy. We demonstrate that due to the nonlinear effects more intensive waves produce more strong turbulence, and this, in turns, results in strong damping of IGW. As a result, the penetration length of more intensive waves is shorter than that of less intensive IGW. The anisotropy of the turbulence produced by less intensive IGW is stronger than that caused by more intensive waves. The low amplitude IGW produce turbulence consisting up to 90 \% of turbulent potential energy. This resembles the properties of the observed high altitude tropospheric strongly anisotropic (nearly two-dimensional) turbulence., Comment: 13 pages, 11 figures, REVTEX4-1, revised

Published
2018
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44. Индустриальная идентичность Урала в представлении иностранца (по материалам сочинений Фредерика Ле Пле)

Author

Ermakova, O. K., Ермакова, О. К., Ermakova, O. K., and Ермакова, О. К.

Abstract

The article analyzes the ideas of the French sociologist and mining engineer Frederic Le Play about the Urals. The sources are the works of the scientist on sociology (which consider working conditions, living standards, “moral habits” of the Ural workers), personal correspondence, as well as office work materials (deposited in the funds of the mining administration). It is shown that the scientist considered many features of social organization and culture within the Ural mining complex to be similar to the situation in Western European industrial centers. At the same time, the Urals possessed their own specifics, and in general, it seemed to be a region by no means provincial, despite its geographical distance from the capitals, but quite fitting into the general European sociocultural context., В статье анализируются представления об Урале французского социолога и горного инженера Фредерика Ле Пле. Источниками выступают труды ученого по социологии (где рассматриваются условия работы, уровень жизни, «моральные привыч- ки» уральских рабочих), личная корреспонденция, а также делопроизводственные материалы (отложившиеся в фондах горной администрации). Показано, что ученый считал многие черты социальной организации и культуры в рамках уральского горно-заводского комплекса схожими с положением в западноевропейских промышленных центрах. В то же время Урал обладал собственной спецификой и в целом представлялся регионом отнюдь не провинциальным, несмотря на географическую отдаленность от столиц, а вполне вписывающимся в общеевропейский социокультурный контекст.

Published
2020

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