Труды сотрудников ИВМ СО РАН

[Text] : статья / V.V. Denisenko [et al.] // J. Atmos. Sol.-Terr. Phys. - 2013. - Vol. 102. - P341-353, DOI 10.1016/j.jastp.2013.05.019. - Cited References: 29. - This work is supported by Grants 09-06-91000, 12-05-00152 from the Russian Foundation for Basic Research. Additional support is due to the Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" under Project I193-N16 and the "Verwaltungsstelle fur Auslandsbeziehungen" of the Austrian Academy of Sciences. The authors are grateful to the unknown reviewers for the fruitful detailed discussion. . - 13. - ISSN 1364-6826РУБ Geochemistry & Geophysics + Meteorology & Atmospheric Sciences

Аннотация: A quasi stationary three dimensional model of electric fields and currents in the conductor that includes the Earth's atmosphere and ionosphere is created. The results of the three dimensional model are simpler regarding interpretation and explanation than two dimensional ones. Known approaches regarding the ionosphere as a boundary condition at the upper boundary of the atmospheric conductor are analyzed. For the investigation of the electric field penetration from ground into the ionosphere it is sufficient to take into account only integral conductivity of the ionosphere. A mathematical simulation has shown that the resulting electric field in the ionosphere is negligible in contrast to the general point of view that such a penetration is a physical process which potentially creates ionospheric precursors of earthquakes. (C) 2013 Elsevier Ltd. All rights reserved.

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ИВМ СО РАН : 660036, Красноярск, Академгородок, 50, стр.44

Доп.точки доступа:
Denisenko, V.V.; Денисенко, Валерий Васильевич; Ampferer, M.; Pomozov, E.V.; Помозов, Егор Владимирович; Kitaev, A.V.; Китаев, Анатолий Валерьевич; Hausleitner, W.; Stangl, G.; Biernat, H.K.; Russian Foundation for Basic Research [09-06-91000, 12-05-00152]; Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" [I193-N16]; "Verwaltungsstelle fur Auslandsbeziehungen" of the Austrian Academy of Sciences

/ V.D. Suvorov [et al.] // Russian Geology and Geophysics. - 2013. - Vol. 54, Is. 9. - pp. 1108-1120, DOI 10.1016/j.rgg.2013.07.023 . - ISSN 1068-7971
Аннотация: The upper-mantle structure was studied from first-arrival data along the Meteorite profile, run using underground nuclear explosions. Unlike the layered, slightly inhomogeneous models in the previous works, emphasis was laid on lateral inhomogeneity at the minimum possible number of abrupt seismic boundaries. We used forward ray tracing of the traveltimes of refracted and overcritical reflected waves. The model obtained is characterized by considerable velocity variations, from 7.7 km/s in the Baikal Rift Zone to 8.0-8.45 km/s beneath the Tunguska syneclise. A layer of increased velocity (up to 8.5-8.6 km/s), 30-80 km thick, is distinguished at the base of seismic lithosphere. The depth of the layer top varies from 120 km in the northern Siberian craton to 210 km in its southeastern framing. It has been shown that, with crustal density anomalies excluded, the reduced gravity field is consistent with the upper-mantle velocity model. В© 2013.

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Доп.точки доступа:
Suvorov, V.D.; Mel'nik, E.A.; Mishen'kina, Z.R.; Pavlov, E.V.; Kochnev, V.A.; Кочнев, Владимир Алексеевич

[Text] / V. V. Denisenko [et al.] // Nat. Hazards Earth Syst. Sci. - 2008. - Vol. 8, Is. 5. - P1009-1017. - Cited References: 60. - This work is supported by grant 07-05-00135 from the Russian Foundation for Basic Research and by the Programs 16.3 and 2.16 of the Russian Academy of Sciences. Further support is due to the Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" under project P20145-N16. We acknowledge support by the Austrian Academy of Sciences, "Verwaltungstelle fur Auslandsbeziehungen", and the Russian Academy of Sciences. Part of this research was done during academic visits of V. V. 'Denisenko to the Space Research Institute of the Austrian Academy of Sciences in Graz as well as during an academic visit of H. K. Biernat to the Institute of Computational Modelling of the Russian Academy of Sciences in Krasnoyarsk. . - ISSN 1561-8633РУБ Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences + Water Resources

Аннотация: The classic approach to calculate the electrostatic field penetration, from the Earth's surface into the ionosphere, is to consider the following equation del. ((sigma) over cap del Phi) =0 where (sigma) over cap and Phi are the electric conductivity and the potential of the electric field, respectively. The penetration characteristics strongly depend on the conductivities of atmosphere and ionosphere. To estimate the electrostatic field penetration up to the orbital height of DEMETER satellite (about 700 km) the role of the ionosphere must be analyzed. It is done with help of a special upper boundary condition for the atmospheric electric field. In this paper, we investigate the influence of the ionospheric conductivity on the electrostatic field penetration from the Earth's surface into the ionosphere. We show that the magnitude of the ionospheric electric field penetrated from the ground is inverse proportional to the value of the ionospheric Pedersen conductance. So its typical value in day-time is about hundred times less than in night-time.


Доп.точки доступа:
Denisenko, V.V.; Денисенко, Валерий Васильевич; Boudjada, M.Y.; Horn, M.; Pomozov, E.V.; Помозов, Егор Владимирович; Biernat, H.K.; Schwingenschuh, K.; Lammer, H.; Prattes, G.; Cristea, E.

/ V. V. Denisenko // Russ. J. Phys. Chem. B. - 2015. - Vol. 9, Is. 5. - P789-795, DOI 10.1134/S199079311505019X . - ISSN 1990-7931
Аннотация: Known models of the penetration of the electric field from the Earth’s surface to the ionosphere due to the electric conductivity of the atmosphere, including models with external currents, are analyzed. Principle disadvantages of models predicting a considerable penetration of the field to the ionosphere are described. It is shown that the penetrating fields are too weak and this makes it impossible to detect them in data of satellite measurements on the background of usual ionospheric fields. A conclusion is made about the necessity to study other physical processes providing the influence of lithospheric processes on the ionosphere. © 2015, Pleiades Publishing, Ltd.

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Держатели документа:
Institute of Computational Modelling, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Денисенко, Валерий Васильевич

/ V. D. Suvorov [et al.] // Dokl. Earth Sci. - 2017. - Vol. 476, Is. 2. - P1195-1199, DOI 10.1134/S1028334X17100191. - Cited References:14 . - ISSN 1028-334X. - ISSN 1531-8354РУБ Geosciences, Multidisciplinary

Аннотация: The results of numerical modelling of deformation of the Earth's crust along the Tarim-Altai profile caused by the force of gravity and lateral compression using the approximate two-dimensional model of the elastoplastic transition are presented. The conditions of the formation of mountains and their roots were determined taking into account some geological and geophysical parameters.

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Держатели документа:
Russian Acad Sci, Trofimuk Inst Petr Geol & Geophys, Siberian Branch, Novosibirsk 630090, Russia.
Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk 634005, Russia.
Novosibirsk Natl Res State Univ, Novosibirsk, Russia.
Russian Acad Sci, Fed Res Ctr, Siberian Branch, Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Suvorov, V. D.; Stefanov, Yu P.; Pavlov, E. V.; Melnik, E. A.; Tataurova, A. A.; Kochnev, V. A.

/ V. V. Denisenko, M. Y. Boudjada, H. Lammer // J. Geophys. Res-Space Phys. - 2018. - Vol. 123, Is. 5. - P4290-4297, DOI 10.1029/2018JA025228. - Cited References:24. - This work is supported by grant 18-05-00195 from the Russian Foundation for Basic Research. We acknowledge support by the Austrian Academy of Sciences and the Russian Academy of Sciences. Part of this research was done during academic visits of V. V. Denisenko to the Space Research Institute of the Austrian Academy of Sciences in Graz. H. Lammer acknowledges support by the Austrian Science Fund (FWF) NFN project S11607-N16 "Particle/Radiative Interactions with Upper Atmospheres of Planetary Bodies under Extreme Stellar Conditions." The data used in this paper are listed in the references. . - ISSN 2169-9380. - ISSN 2169-9402РУБ Astronomy & Astrophysics

Аннотация: Seismogenic models have been recently proposed to explain precursors before earthquakes occurrences. Those models refer to physical processes linking the lithosphere, the atmosphere, and the ionosphere. We analyze in this work the curl-free current model describing the current flow from the lithosphere to the ionosphere through the atmosphere. We use a numerical simulation based on the finite element method to derive the current between the ground and the ionosphere. We have shown that the curl-free approximation of the atmospheric current density leads to significant and unpredictable distortions of the solutions of the electrical conductivity. Hence, it incorrectly expands the ionospheric disturbed region associated to lithospheric currents. It is shown that horizontally homogeneous vertical underground external currents cannot create currents from ground to the atmosphere.

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Держатели документа:
RAS, Inst Computat Modelling, SB, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Austrian Acad Sci, Space Res Inst, Graz, Austria.

Доп.точки доступа:
Denisenko, V. V.; Boudjada, M. Y.; Lammer, H.; Russian Foundation for Basic Research [18-05-00195]; Austrian Academy of Sciences; Russian Academy of Sciences; Austrian Science Fund (FWF) NFN project [S11607-N16]