Dr. Tatiana V. Losseva Profile

Dr. Tatiana V. Losseva

at Institute of Geospheres Dynamics RAS

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Author

Publications (8)

Proceedings Article | 8 December 2022 Paper

Experimental and theoretical study of Schumann resonance

Andrey Lyakhov, Egor Goncharov, Tatiana Losseva

Proceedings Volume 12341, 123417C (2022) https://doi.org/10.1117/12.2644767

KEYWORDS: Waveguides, 3D modeling, Atmospheric modeling, Ions, Atmospheric propagation, Radio propagation, Electromagnetic radiation, Wave propagation, Resonators, Earth's atmosphere

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Proceedings Article | 16 December 2021 Paper

Seasonal Schumann Resonance variations according to magnetic field measurements at Mikhnevo observatory

Egor Goncharov, Andrey Lyakhov, Tatiana Losseva

Proceedings Volume 11916, 119167W (2021) https://doi.org/10.1117/12.2603361

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Proceedings Article | 16 December 2021 Paper

The numerical simulation of ELF-LF propagation in the Earth-ionosphere waveguide under WACCM-X results

Andrey Lyakhov, Egor Goncharov, Tatiana Losseva

Proceedings Volume 11916, 119167V (2021) https://doi.org/10.1117/12.2603344

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Proceedings Article | 16 December 2021 Paper

Determination of the high-speed plasma jet injection parameters in the "Fluxus" experiments

T. Losseva, A. Golub', I. Kosarev, Yu. Poklad, A. Lyakhov

Proceedings Volume 11916, 119167O (2021) https://doi.org/10.1117/12.2603249

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Proceedings Article | 12 November 2020 Paper

Method for radiation transfer calculation in numerical simulation of strong perturbation in the atmosphere

Tatiana Losseva

Proceedings Volume 11560, 115608C (2020) https://doi.org/10.1117/12.2575441

KEYWORDS: Diffusion, Numerical simulations, Radiation effects, Atmospheric plasma, Numerical analysis, Black bodies, Numerical modeling

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Proceedings Article | 12 November 2020 Paper

FDTD, FDFD, and mode sum methods for VLF-LF propagation in the lower ionosphere

Andrey Lyakhov, Egor Goncharov, Tatiana Losseva

Proceedings Volume 11560, 115608S (2020) https://doi.org/10.1117/12.2575631

KEYWORDS: Finite-difference time-domain method, Atmospheric propagation, Ions, Wave propagation, Atmospheric modeling, Radio propagation, Plasma, 3D modeling, Atmospheric sciences, Chemical reactions

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Proceedings Article | 18 December 2019 Paper

The comparison of standard and swarm D-layer ionosphere models on the simulation of the x-ray solar flare response

Andrey Lyakhov, Stanislav Kozlov, Tatiana Losseva, Susanna Bekker, Julia Korsunskaya, Boris Gavrilov, Valery Kudryavtsev, Egor Goncharov

Proceedings Volume 11208, 112088Z (2019) https://doi.org/10.1117/12.2540423

KEYWORDS: Solar radiation models, X-rays, Ionization, Ions, Atmospheric modeling

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The contemporary study of the global change of the atmosphere raise up the problem of models verification, namely, we need the quantified metric to compare models. One of such simple approach is to use the evidence on VLF-LF propagation under the X-ray solar flares. Any flare impacts on the middle atmosphere up to 60 km altitude. Its signature in amplitude record is clear and identifiable. We have a variety of radio paths and any season (or even year of solar cycle) in database. All aforementioned arguments make the strong basis for the model check. The response of the lower ionosphere and middle atmosphere to a solar flare depends on the quality of the source term definition and on the correctness of the chemical processes description. Different approaches are known for the derivation of X-ray excess ionization, varying from classic approach¹ to huge Monte Carlo simulations.² We elaborated the numerical model which is combined from an empirical model of ionization (GOES X-ray measurements) and numerical VLF propagation code.³ It successfully reproduced the first phase of the lower ionosphere response to the extremely strong solar X-flare (X9.9) September 06, 2017. Meanwhile, the decay phase was overestimated. Thus we decided to improve the ionosphere model and compare our model with other popular ionization schemes under the flares of various class. Moreover, all ionospheric models under analysis were realised in two modes: the standard mode with constant chemical rates and in the swarm mode with rates dependence on the altitude and ionization rate. The latter have been received in 70-s from complex kinetic simulations of the high altitude nuclear explosion impact on the ionosphere.⁴ We expected the improvement of results for intense flares and we wanted to check the quality of contemporary and old ionosphere models on the modern data. The results prove that (a) all models failed under empirical model of ionization; (b) the most promising model is IDG5 in swarm mode; (c) the problem of the minor neutrals is overestimated.

Proceedings Article | 13 December 2018 Paper

the numerical simulation of the 2017 september solar X-flares impact on the midlatitude lower ionosphere

Andrey Lyakhov, Julia Korsunskaya, Yuri Poklad, Boris Gavrilov, Ilya Ryakhovsky, Julius Zetzer, Tatiana Losseva, M. Bisyarin, V. Kirillov, A. Orlov, A. Pronin

Proceedings Volume 10833, 108339M (2018) https://doi.org/10.1117/12.2504292

KEYWORDS: Solar radiation models, Solar processes, Ionization, Transmitters, Numerical simulations, X-rays, Data modeling, Monte Carlo methods, Physics

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Showing 5 of 8 publications

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