Труды сотрудников ИВМ СО РАН

/ N. V. Erkaev [et al.] // Geophys. Res. Lett. - 2012. - Vol. 39. - Ст. L01103, DOI 10.1029/2011GL050209. - Cited References: 16. - This work was done while NVE was on a research visit to the Space Science Center of UNH. This work is supported by RFBR grant N 09-05-91000-ANF_a, and also by the Austrian "Fonds zur Forderung der wissenschaftlichen Forschung" under Project I 193-N16 and the "Verwaltungsstelle fur Auslandsbeziehungen" of the Austrian Academy of Sciences. Work by CJF was supported by NASA grants NNX10AQ29G and NNX08AD11G. . - ISSN 0094-8276РУБ Geosciences, Multidisciplinary

Аннотация: In previous work we used a semi-analytical treatment to describe accelerated magnetosheath flows caused by the draping of interplanetary magnetic field (IMF) lines around the magnetosphere. Here, we use the same approach, i.e., modeling the magnetic field lines as elastic strings, to examine how the magnetic tension force, one of the two agents responsible for producing these flows, varies along field lines away from the equatorial plane. The bend in the field line caused by the draping mechanism propagates as two oppositely-directed waves to higher latitudes. For a due northward IMF - the case we consider here - these propagate symmetrically north/south of the equatorial plane. As a result, a two-peaked latitude velocity profile develops as we go further downtail and the velocity peaks migrate along the magnetic field line to higher latitudes. We examine this velocity-profile for two Alfven Mach numbers (M-A = 8 and 3), representative of conditions in the solar wind at 1 AU ("normal" solar wind and solar transients). Qualitatively, the picture is the same but quantitatively there are important differences: (i) the flows reach higher values for the lower M-A (maximum V/V-SW = 1.6) than for the higher M-A (V/V-SW = 1.3); (ii) asymptotic values are reached farther downstream of the dawn-dusk terminator for the lower M-A (similar to-50 R-E vs -15 R-E); (iii) For the lower M-A the highest speeds are reached away from the equatorial plane. We predict two channels of fast magnetosheath flow next to the magnetopause at off-equatorial latitudes that exceed the solar wind speed. Citation: Erkaev, N. V., C. J. Farrugia, A. V. Mezentsev, R. B. Torbert, and H. K. Biernat (2012), Accelerated magnetosheath flows caused by IMF draping: Dependence on latitude, Geophys. Res. Lett., 39, L01103, doi:10.1029/2011GL050209.

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Доп.точки доступа:
Erkaev, N.V.; Еркаев, Николай Васильевич; Farrugia, C.J.; Mezentsev, A.V.; Torbert, R.B.; Biernat, H.K.

[Text] / A.D. Aponasenko [et al.] // Water Resour. - 2010. - Vol. 37, Is. 6. - pp. 817-824, DOI 10.1134/S0097807810060072. - Cited References: 17 . - ISSN 0097-8078РУБ Water Resources

Аннотация: Multidisciplinary studies carried out in 2007-2008 revealed the features of concentration dynamics of biogenic and organic substances, bacterio- and phytoplankton, and chlorophyll in different reaches of the Enisei River. By the development state of bacterio- and phytoplankton, saprobity index, total primary production g O(2)/(m(2) day), and self-purification index, the water refers to the third quality class (satisfactorily clean), beta-mesosaprobic. The Enisei refers to the oligotrophic type upstream of the Angara mouth and to the mesotrophic type downstream of it.


Доп.точки доступа:
Aponasenko, A.D.; Апонасенко, Анатолий Дмитриевич; Dryukker, V.V.; Sorokovikova, L.M.; Shchur, L.A.; Щур, Людмила Александровна

[Text] / D. F. Vogl [et al.] // Planet Space Sci. - 2003. - Vol. 51, Is. 12. - P715-722, DOI 10.1016/S0032-0633(03)00108-9. - Cited References: 28 . - ISSN 0032-0633РУБ Astronomy & Astrophysics

Аннотация: In this paper, we concentrate on the analysis of the anisotropic Rankine-Hugoniot equations for perpendicular and oblique fast shocks. In particular, as additional information to the anisotropic set of equations, the threshold conditions of the fire-hose and mirror instability are used to bound the range of the pressure anisotropy downstream of the discontinuity. These anisotropic threshold conditions of the plasma instabilities are obtained via a kinetic approach using a generalized Lorentzian distribution function, the so-called kappa distribution function. Depending on up-stream conditions, these instabilities further define stable and unstable regions with regard to the pressure anisotropy downstream of the shock. The calculations are done for different upstream Alfven Mach numbers. We found that low values of the parameter kappa reduce the pressure anisotropy downstream of the shock. (C) 2003 Elsevier Ltd. All rights reserved.


Доп.точки доступа:
Vogl, D.F.; Langmayr, D.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.; Farrugia, C.J.; Muhlbachler, S.

[Text] / D. F. Vogl [et al.] // HELIOSPHERE AT SOLAR MAXIMUM. Ser. ADVANCES IN SPACE RESEARCH : PERGAMON-ELSEVIER SCIENCE LTD, 2003. - Vol. 32: D1 1/D2 1/E3 1 Symposium of COSPAR Scientific Commission D held at the 34th COSPAR Scientific Assembly/2nd Space Congress (OCT 10-19, 2002, HOUSTON, TEXAS), Is. 4. - P519-523, DOI 10.1016/S0273-1177(03)00336-3. - Cited References: 18 . - ISBN 0273-1177РУБ Engineering, Aerospace + Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: In this paper, we concentrate on the solution of the anisotropic Rankine-Hugoniot equations for inclined fast shocks taking into account a new approach in closing the set of equations. In particular, the threshold conditions of the fire-hose and that of the mirror instability, obtained in a kinetic approach using the so-called kappa distribution function, are used to bound the range of the pressure anisotropy downstream of the discontinuity. We study the variation of the density across the shock for a given Alfven Mach number and upstream pressure anisotropy and find that the parameter kappa is most sensitive to stable plasma conditions, i.e. low values of kappa reduce the pressure anisotropy downstream of the discontinuity. (C) 2003 COSPAR. Published by Elsevier Ltd. All rights reserved.


Доп.точки доступа:
Vogl, D.F.; Langmayr, D.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.; Farrugia, C.J.; Muhlbachler, S.

[Text] / H. K. Biernat [et al.] // COMPARATIVE RECONNECTION STUDIES AT THE SUN AND IN PLANETARY MAGNETOSPHERES. Ser. ADVANCES IN SPACE RESEARCH : PERGAMON-ELSEVIER SCIENCE LTD, 2002. - Vol. 29: D0 1-E3 1 Symposium of COSPAR Scientific Commission D held at the 33rd COSPAR Scientific Assmbly (JUL, 2000, WARSAW, POLAND), Is. 7. - P1069-1074, DOI 10.1016/S0273-1177(02)00023-6. - Cited References: 12 . - ISBN 0273-1177РУБ Engineering, Aerospace + Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: Many observations show a difference between the pressure parallel and perpendicular to the magnetic field. Thus it is reasonable to study the Petschek reconnection mechanism for the set of equations allowing for pressure anisotropy. We study the simplest case of so-called Petschek shocks, where the Alfven discontinuity and the slow shock degenerate to one discontinuity. More specifically, we consider switch-off shocks, where the magnetic field on the downstream side vanishes in lowest order, so that the plasma is isotropic on that side. (C) 2002 COSPAR. Published by Elsevier Science Ltd. All rights reserved.


Доп.точки доступа:
Biernat, H.K.; Muhlbachler, S.; Semenov, V.S.; Erkaev, N.V.; Еркаев, Николай Васильевич; Vogl, D.F.; Ivanova, V.V.

[Text] / C. J. Farrugia [et al.] // J. Geophys. Res-Space Phys. - 2001. - Vol. 106, Is. A12. - P29373-29385, DOI 10.1029/2001JA000034. - Cited References: 42 . - ISSN 0148-0227РУБ Astronomy & Astrophysics

Аннотация: We carry out a first comparison with spacecraft measurements of our recent three-dimensional, one-fluid magnetohydrodynamic (MHD) model for the anisotropic magnetosheath [Erkaev et al., 1999], using data acquired by the Wind spacecraft on an inbound magnetosheath pass on December 24, 1994. The spacecraft trajectory was very close to the stagnation streamline, being displaced by less than 1/2 hour from noon and passing at low southern magnetic latitudes (similar to4.5degrees). All quantities downstream of the bow shock are obtained by solving the Rankine-Hugoniot equations taking the pressure anisotropy into account. In this application of our model we close the MHD equations by a "bounded anisotropy" ansatz using for this purpose the inverse correlation between the proton temperature anisotropy, A(p) (equivalent to T-pperpendicular to/T-pparallel to - 1) and the proton plasma beta parallel to the magnetic field beta(pparallel to) observed on this pass when conditions are steady. In the model the total perpendicular pressure is prescribed and not obtained self-consistently. For all quantities studied we find very good agreement between the predicted and the observed profiles, indicating that the bounded anisotropy method of closing the magnetosheath equations, first suggested by Denton et al. [1994], is valid and reflects the physics of the magnetosheath well. We assess how sensitive our model results are to different parameters in the A(p) = alpha(0)beta(pparallel to)(-alpha1) (alpha(1) 0) relation, taking for al the two limiting values (0.4, 0.5) resulting from the two-dimensional hybrid simulations of Gary et al. [1997], and varying alpha(0) in the range 0.6 - 0.8. Input solar wind conditions are as measured on this pass. In general, the model profiles depend more strongly on alpha(0) than on al. In particular, decreasing alpha(0) narrows the width of the plasma depletion layer (PDL) and widens the mirror stable region. For the lowest value of alpha(0) the mirror stable region extends sunward of the outer edge of the PDL. For the other two values of alpha(0) and regardless of the value of al, it is contained within the PDL. Finally, we also study phenomenological double-polytropic laws and find polytropic indices gamma(perpendicular to) approximate to 1 and gamma(parallel to) approximate to 1.5. These results agree well with those of Hau et al. [1993] inferred from Active Magnetospheric Particle Tracer Explorers/ Ion Release Module data on a crossing of the near-subsolar magnetosheath.


Доп.точки доступа:
Farrugia, C.J.; Erkaev, N.V.; Еркаев, Николай Васильевич; Vogl, D.F.; Biernat, H.K.; Oieroset, M.; Lin, R.P.; Lepping, R.P.

[Text] / D. F. Vogl [et al.] // Nonlinear Process Geophys. - 2001. - Vol. 8: 25th General Assembly of the European-Geophysical-Society (APR, 2000, NICE, FRANCE), Is. 3. - P167-174. - Cited References: 16 . - ISSN 1023-5809РУБ Geochemistry & Geophysics + Meteorology & Atmospheric Sciences

Аннотация: Taking into account the pressure anisotropy in the solar wind, we study the magnetic field and plasma parameters downstream of a fast shock, as functions of upstream parameters and downstream pressure anisotropy. In our theoretical approach, we model two cases: a) the perpendicular shock and b) the oblique shock. We use two threshold conditions of plasma instabilities as additional equations to bound the range of pressure anisotropy. The criterion of the mirror instability is used for pressure anisotropy P (perpendicular to)/P (parallel to) 1. Analogously, the criterion of the fire-hose instability is taken into account for pressure anisotropy P-perpendicular to/P-parallel to 1. We found that the variations of the parallel pressure, the parallel temperature, and the tangential component of the velocity are most sensitive to the pressure anisotropy downstream of the shock. Finally, we compare our theory with plasma and magnetic field parameters measured by the WIND spacecraft.


Доп.точки доступа:
Vogl, D.F.; Biernat, H.K.; Erkaev, N.V.; Еркаев, Николай Васильевич; Farrugia, C.J.; Muhlbachler, S.

[Text] / D. F. Vogl [et al.] // PLANETARY MAGNETOSPHERES. Ser. ADVANCES IN SPACE RESEARCH : ELSEVIER SCIENCE BV, 2001. - Vol. 28: D3 1/C3 3 Symposium of COSPAR Scientific Commission D held at the 33rd COSPAR Scientific Assembly (JUL, 2000, WARSAW, POLAND), Is. 6. - P851-856, DOI 10.1016/S0273-1177(01)00503-8. - Cited References: 12 . - ISBN 0273-1177РУБ Engineering, Aerospace + Astronomy & Astrophysics + Geosciences, Multidisciplinary + Meteorology & Atmospheric Sciences

Аннотация: In this paper we report on the variations of the magnetic field strength and the plasma parameters across a fast shock as functions of upstream Alfven Mach numbers and pressure anisotropy downstream of the shock. In our study we consider an oblique shock where the angle between the magnetic field vector and the normal vector upstream of the shock is chosen to be 45degrees. We further use two threshold conditions of plasma instabilities as additional equations to bound the range of the pressure anisotropy, p(perpendicular to)/p(\\), i.e., the criterion of the mirror instability and that of the fire-hose instability. We found that the variations of the parallel pressure, the parallel temperature, as well as the tangential component of the velocity are most sensitive to the pressure anisotropy downstream of the shock, whereas the variations of the plasma density, the normal velocity, the magnetic field strength, and perpendicular pressure and temperature with respect to the magnetic field show much less pronounced dependence on the anisotropy. (C) 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.


Доп.точки доступа:
Vogl, D.F.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.; Muhlbachler, S.; Farrugia, C.J.

[Text] / V. M. Belolipetsky, S. N. Genova // Int. J. Comput. Fluid Dyn. - 1998. - Vol. 10, Is. 2. - P151-158, DOI 10.1080/10618569808961681. - Cited References: 6 . - ISSN 1061-8562РУБ Mechanics + Physics, Fluids & Plasmas

Аннотация: The erection of large hydroelectric power stations leads to appreciable changes in hydrothermal and ice river regimes both above and below the hydroscheme. The river regime change affects the adjacent areas ecology. To estimate completely the ecologic effect of designed and already constructed hydroelectric power stations, it is necessary to determine the hydrothermal and ice river regime changes. As a methodical basis for the construction of a set of computer algorithms, a method of splitting by physical processes and the module principle has been used. Among the hydro-ice-thermics problems of rivers and water reservoirs are the following: the determination of the temperature regime of a water reservoir, an investigation of stratified flows in a weakly-running water reservoir; an investigation of a hydrothermal river regime; an investigation of ice cover edge dynamics in the downstream of a river. For every problem, mathematical models of different levels of complication and computer programs have been worked out.

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Держатели документа:
Russian Acad Sci, Ctr Comp, Siberian Div, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
Krasnoyarsk State Tech Univ, Krasnoyarsk, Russia
ИВМ СО РАН

Доп.точки доступа:
Belolipetskii, V.M.; Белолипецкий, Виктор Михайлович; Genova, S.N.; Генова, Светлана Николаевна

/ Y. A. Ponomareva, E. A. Ivanova // Contemp. Probl. Ecol. - 2016. - Vol. 9, Is. 5. - P582-589, DOI 10.1134/S1995425516050115 . - ISSN 1995-4255
Аннотация: Based on a daily examination of phytoplankton in the Yenisei River downstream of the Krasnoyarsk Hydroelectric Power Station (HPS) within a 4-year period, the ratio between living and dead cells is estimated and the size fractions of phytoplankton are described. It is found that, despite the certain negative effects of passing through the turbine blades of the high-head dam, high current speed, and influence of water discharges from the HPS, living algae cells dominate over dead ones in the water column of the studied reach of the Yenisei River during almost the entire year, except for several dates in late autumn and winter. It is shown that microphytoplankton (20–64 ?m in size) and nanophytoplankton (2–20 ?m), which make up 83% of the total algae count, pass through the turbine blades of the HPS and mostly remain undamaged, with the fraction of living cells varying from 21% in the winter period to 96% in the spring–summer period. © 2016, Pleiades Publishing, Ltd.

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Держатели документа:
Siberian Federal University, pr. Svobodny 79, Krasnoyarsk, Russian Federation
Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/44, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ponomareva, Y. A.; Ivanova, E. A.

[Текст] : научное издание / Юлия Андреевна Пономарева, Полина Владимировна Постникова // Вестник Томского государственного университета. Биология. - 2017. - № 38. - С. 167-182, DOI 10.17223/19988591/38/10 . - ISSN 1998-8591
   Перевод заглавия: Temporal dynamics of structural and functional characteristics of the Yenisei river phytoplankton downstream of the Krasnoyarsk hydroelectric power station
Аннотация: Представлены результаты изучения формирования фитопланктонного сообщества и флуоресцентных характеристик вод в условиях сброса высоконапорной Красноярской ГЭС. Сезонные и межгодовые изменения фитопланктона оценивали на основе численности и биомассы клеток фитопланктона, а также концентрации хлорофилла а. Выявлены закономерности сезонных сукцессий и межгодовых вариаций структурно-функциональных характеристик фитопланктона. Обнаружено, что основу флористического списка в реке Енисей составляют диатомовые водоросли (66% от общего видового состава), преобладающие в планктоне во все сезоны года. Наибольший вклад в общую численность и биомассу фитопланктона вносят нанофитопланктон (2-20 мкм) и микрофитопланктон (20-64 мкм). В комплекс доминантов вранневесенний период входили Diatoma vulgare Bory и Hannaea arcus (Ehrb.) Patr., в летний - Aulacoseira islandica (O. Mull.) Sim. и Cyclotella radiosa (Grun.) Lemm., позднелетний - Fragilaria crotonensis Kitt. Вместе с тем на фоне увеличивающегося видового разнообразия и интенсивного развития водорослей в весенне-летний период отмечен спад концентрации хлорофилла а. Установлено, что во все рассматриваемые годы пики численности и биомассы фитопланктона приходятся на июнь за счет колониальных диатомовых водорослей, попадающих в нижний бьеф со стоком из верхнего бьефа.
The Yenisei River is the biggest waterway in Siberia. In the second half of the 20th century, the Yenisei River was overlapped by dams, and it deeply damaged the natural hydrological, hydrochemical and hydrobiological regimes of the river. As a result of constructing the Krasnoyarsk hydroelectric power station, a significant river component - phytoplankton, which occupies the central place in the formation of the aquatic ecosystem - has changed downstream of the river. In the river, phytoplankton is formed from phytoperiphyton and allochthonous algae, including phytoplankton species of upstream reservoirs. Therefore, knowledge of transformation laws of phytoplankton species composition, which occurs during the regulation of the river flow and formation of reservoirs, may contribute to the development of ideas about changing the aquatic communities. The aim of this research was to explore the formation of phytoplankton under the conditions of water discharge in the Krasnoyarsk HPS and to study chlorophyll a concentration. We collected phytoplankton samples at a distance of 34 km below the Krasnoyarsk HPS (55°59'1.8"N, 92°47'13.4"E) in 2008-2014 and analyzed them according standard hydrobiological methods (See Table). In 2012-2014, we measured fluorescent water characteristics along with the study of algae. We took the nomenclature for algae considering taxonomic transformations according to the system adopted by the International algae database (http://www.algaebase.org). A quantitative processing of phytoplankton samples was conducted daily, species composition and biomass of algae was determined weekly. In size, algae cells were differentiated according to Rainey. The degree of complexity of phytoplankton communities was determined calculating the Shannon species diversity index (by biomass). The dominant algae included species making the main contribution into the total phytoplankton biomass. In 20122014, along with the study of algae, we determined chlorophyll а concentration by fluorimetric method, weekly (See Fig. 3). We collected and processed a total of 2453 qualitative and quantitative phytoplankton samples for the period of study; 89 samples to determine chlorophyll а content. Altogether, we found 99 species, kinds and forms of algae from 6 groups in the river phytoplankton. In the Yenisei River, diatoms, which predominate in plankton in all seasons, are characterized by the maximum number of species. There is a certain sequence in the appearance of dominant algae. From late April to late May, Diatoma vulgare Bory and Hannaea arcus (Ehrb.) Patr. were recorded in quantities, in June -Aulacoseira islandica (O. Mull.) Sim., in July - Cyclotella radiosa (Grun.) Lemm., in August - Fragilaria crotonensis Kitt. (See Fig. 1). Upstream of the Krasnoyarsk reservoir A. islandica had a dominant position in nephotic cold layer in June, in July and August - C. radiosa; F. crotonensis was a subdominant. It is known that deep water discharge through the dam (18-40 м) is specific for the Krasnoyarsk reservoir. This causes the flow of algae over the dam. In general, the dynamics of the total number and the total biomass of phytoplankton had the form of unimodal curve within the year (with a peak in June) (See Fig. 2). Nanophytoplankton (2-20 mkm) and microphytoplankton (20-64 mkm) made the biggest contribution to the total biomass of phytoplankton. We recorded peaks of number and biomass of phytoplankton in June in all years in question. We found that the percentage of chlorophyll content per phytoplankton biomass unit had seasonal variations and increased in winter (See Fig. 5). It is known, that the concentration of chlorophyll a depends on dimensional structure of phytoplankton. In spring and summer, the domination of algae cells with bigger volumes in phytoplankton caused a decrease in chlorophyll а concentration.

РИНЦ

Держатели документа:
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Пономарева, Юлия Андреевна; Ponomareva Yulia A.; Постникова, Полина Владимировна; Postnikova Polina V.

[Текст] : доклад, тезисы доклада / Ю. А. Пономарева, И. Г. Прокопкин, П. В. Белолипецкий // Водные и экологические проблемы Сибири и Центральной Азии : труды III Всероссийской научной конференции с международным участием. - Барнаул : Б. и., 2017. - Т. 1. - С. 171-179 . - ISBN 978-5-9909722-1-6
   Перевод заглавия: Influence oF Krasnoyarsk hydropower station discharge rate on dynamics of phytoplankton population downstream the dam
Аннотация: В результате многолетних натурных наблюдений определены факты влияния повышенной скорости сброса воды через шлюзы плотины Красноярской ГЭС на динамику фитопланктона р. Енисей ниже плотины. Высказано предположение, что механизм влияния данного фактора заключается в следующем: повышенный сброс воды изменяет температуру воды реки в нижнем бьефе, что в свою очередь влияет на динамику численности фитопланктона. Справедливость данного предположения подтверждается данными 2008-2016 гг. Полученные результаты могут быть применены для составления прогнозов динамики фитопланктона в нижнем бьефе в следующие временные периоды.
Using multiyear measurements, we investigated the influence of high flow rates at Krasnoyarsk hydropower station (Krasnoyarsk HPS) on the phytoplankton population of Yenisei River downstream the dam. We propose the hypothesis that flow rate variations change water temperature, which is influencing the phytoplankton dynamics. This hypothesis is verified by measurements conducted in 2008-2016. The results obtained can be used for the forecast of phytoplankton dynamics downstream the dam.

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Источник статьи

Держатели документа:
Институт биофизики
Институт вычислительного моделирования СО РАН

Доп.точки доступа:
Пономарева, Ю.А.; Ponomareva Y.A.; Прокопкин, И.Г.; Prokopkin I.G.; Белолипецкий, П.В.; Belolipetsky P.V.; ВОДНЫЕ И ЭКОЛОГИЧЕСКИЕ ПРОБЛЕМЫ СИБИРИ И ЦЕНТРАЛЬНОЙ АЗИИ(2017 ; 28.08 - 01.09 ; Барнаул)
Нет сведений об экземплярах (Источник в БД не найден)

[Text] : доклад, тезисы доклада / V. M. Belolipetsky, P. V. Belolipetsky, S. N. Genova // 15th International Conference on Environmental Science and Technology (CEST 2017) : proceedings of the 15th International Conference on Environmental Science and Technology (CEST 2017). - Rhodes : Global Network for Environmental Science and Technology, 2017. - Ст. 00727
Аннотация: Mathematical model was developed for simulation of Krasnoyarsk hydropower station (HPS) intake regime influence on ice and water temperature downstream of the dam. Current reservoir vertical temperature profile and water temperatures of downstream river were used for the verification of the model. Using this model we estimated influence of stratification, withdrawal position and discharge on temperature of water inflow into HPS. It was estimated that changeover to upper-layer intake from current deep-layers intake allows to increase water temperature of Yenisey at Krasnoyarsk city on 6-8 C at summer period

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Источник статьи

Держатели документа:
Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science

Доп.точки доступа:
Belolipetsky, V.M.; Belolipetsky, P.V.; Genova, S.N.; 15th International Conference on Environmental Science and Technology (CEST 2017)(2017 ; 31.08 - 02.09 ; Rhodes)
Нет сведений об экземплярах (Источник в БД не найден)

[Text] : доклад, тезисы доклада / Yu. Ponomareva, I. Prokopkin, P. Belolipetsky // 15th International Conference on Environmental Science and Technology (CEST 2017) : proceedings of the 15th International Conference on Environmental Science and Technology (CEST 2017). - Rhodes : Global Network for Environmental Science and Technology, 2017. - Ст. 00728
Аннотация: Using multiyear measurements, we investigated the influence of high flow rates at Krasnoyarsk hydropower station (Krasnoyarsk HPS) on the phytoplankton population of Yenisei River downstream of the dam. We propose the hypothesis that flow rate variations are changing water temperature, which is influencing on phytoplankton dynamics. This hypothesis is verified by measurements of 2008-2016 years. Found relationships could be used for preparation of prognosis of the phytoplankton dynamics downstream of the dam.

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Источник статьи

Держатели документа:
Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences
Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Sciences

Доп.точки доступа:
Ponomareva, Yu.; Prokopkin, I.; Belolipetsky, P.; 15th International Conference on Environmental Science and Technology (CEST 2017)(2017 ; 31.08 - 02.09 ; Rhodes)
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[Текст] : статья / А. В. Андрианова, О. Э. Якубайлик, Ю. В. Шанько // Российский журнал биологических инвазий. - 2018. - Т. 9, № 3. - С. 2-19 . - ISSN 1996-1499
   Перевод заглавия: Modern data on the spacious distribution of the baikal amphipods in the enisey river and their visualization in the geoinformational web-system

УДК

574.625

574.587

595.371

Аннотация: Представлены результаты экспедиционных гидробиологических исследований, проведённых в 2015-2016 гг. в нескольких зонах русла р. Енисей от истока до устья. Данная работа посвящена про- странственной динамике сообщества амфипод, в котором лидирующие позиции занимают виды - вселенцы из оз. Байкал, распространившиеся через р. Ангару не только вниз, но и вверх по течению р. Енисей. Выявлено 8 видов амфипод, среди них два представителя нативной фауны ( Pontoporeia affinis и Gammarus sp. ) и 6 байкальских эндемиков. На всём протяжении реки среди гаммарид коли- чественно доминировал Gmelinoides fasciatus, второе место занял Philolimnogammarus viridis. Лишь в низовье и дельте Енисея лидирующие позиции перешли к P. affinis - представителю эстуарно- реликтового комплекса организмов, эндемику дельты Енисея. Байкальские эндемики активно засе- лили участок ниже Саяно-Шушенского водохранилища, особенно в зонах массового распростране- ния макрофитов. Основным вектором распространения байкальских эндемиков в Енисее является саморасселение через р. Ангару, замеченное исследователями еще в XIX в. Для G. fasciatus дополни- тельным стимулом роста численности ниже и выше Красноярской ГЭС стала его преднамеренная интродукция в Красноярское водохранилище в конце 1960-х гг. с целью обогащения кормовой базы. Натурализации Ph. viridis на участке Верхнего Енисея способствовала, вероятно, случайная интро- дукция. Наблюдается дивергенция экологических ниш у G. fasciatus и Ph. viridis в Енисее: доминант предпочитает заиленные песчано-галечные биотопы со спокойным скоростным режимом; субдоми- нант склонен к каменисто-галечным грунтам, омываемым быстрым течением. За последние 15 лет возросла плотность и доля амфипод в зообентосе на участке Ангара - Подкаменная Тунгуска. Ре- зультаты гидробиологических исследований оформлены в виде геопространственной базы данных на геопортале, который предоставляет возможности визуализации информации в виде интерактив- ных тематических карт и обеспечивает возможность прямого доступа к данным через картографи- ческие веб-сервисы из современных ГИС.
The results of hydrobiological studies of expeditions, conducted in 2015-2016 in several zones of the Yenisei River from its head to the mouth, are presented. This work deals with the spatial dynamics of the amphipod community, in which the leading positions are occupied by invaders from Baikal. The invaders spread through the river Angara not only downstream, but also upstream the Yenisei. Eight species of amphipods were identified, and there were two representatives of native fauna ( Pontoporeia affinis and Gammarus sp.) and six Baikal endemics among them. Throughout the river, Gmelinoides fasciatus dominated quantitatively among the gammarids, Philolimnogammarus viridis took the second place. Only in the lower reaches and in the delta of the Yenisei the leading positions were surrendered to Pontoporeia affinis - a representative of the estuary-relic complex of organisms. Baikal endemics populated actively the Upper Yenisei section below the Sayano-Shushensky hydroelectric power station (HPS), especially in the areas of massive macrophyte distribution. The main vector of Baikal endemics spreading in the Yenisei is self- colonization through the river Angara, noticed by researchers in the 19th century. For G. fasciatus, its intentional introduction into the Krasnoyarsk Reservoir in the late 1960s with the aim of increasing the food supply was an additional stimulus for the growth of the population below and above the Krasnoyarsk HPS. Naturalization of Ph. viridis in the Upper Yenisei section was probably contributed by an accidental introduction. There is a divergence of ecological niches in G. fasciatus and Ph. viridis in the Yenisei: the dominant prefers silty sand-and-shingle biotopes with a calm speed rate; the subdominant tends to prefer stony-pebble bottom washed by a rapid current. Over the last 15 years, the density and proportion of crustaceans in the zoobenthos have increased in the Angara - Podkamennaya Tunguska section. The results of hydrobiological studies have been designed in the form of geospatial database in the geoportal, which gives the possibility to visualize information as interactive thematic maps and which provides the direct access to data via web mapping services from the modern GIS software.

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Держатели документа:
Институт вычислительного моделирования СО РАН
НИИ Экологии рыбохозяйственных водоёмов
Сибирский Федеральный университет

Доп.точки доступа:
Андрианова, А.В.; Andrianova A.V.; Якубайлик, О.Э.; Yakubaylik O.E.; Шанько, Ю.В.; Shan'ko Y.V.

[Текст] : статья / Николай Яковлевич Шапарев, Юрий Иванович Шокин // Вычислительные технологии. - 2018. - Т. 23, № 6. - С. 107-114, DOI 10.25743/ICT.2018.23.6.010 . - ISSN 1560-7534
   Перевод заглавия: Modelling of summertime hydrothermal regime in the downstream pool of Krasnoyarsk hydroelectric power station
Аннотация: Предлагается модель летнего гидротермического режима р. Енисей в нижнем бьефе Красноярской ГЭС на основе детерминированного подхода. На теплообмен воды с окружающей средой влияют следующие физические процессы: поглощение водой прямой и рассеянной солнечной радиации; поглощение поверхностью воды тепловой инфракрасной радиации (ТИР), исходящей из атмосферы; излучение поверхностью воды ТИР; испарительный и конвективный теплообмен. Результаты моделирования сравниваются с температурными данными, полученными с гидропостов.
Here we consider the summertime hydrothermal regime in a 124-km river occurring within the interval (reach) downstream of the Krasnoyarsk HPP on July 3, 2016 based on the deterministic modelling approach. The reach area is divided by 4 cross-section lines (0.5, 40, 77, 124 km) with gauging stations at the first, second and forth section lines to measure water temperature. Temperature measurements at the gauging stations are taken at time (at hour 08:00 and 20:00). Water temperature at the first gauging station was 7.2^∘ C and remained constant during the time period under consideration. To carry out mathematical simulation by analogy with other authors, we use the Fourier equation. We have proposed a simple model for simulating summertime hydrothermal regime of a river based on calculation of water temperature in a coordinate system moving with water. The physically based estimation of water heat budget takes into account absorption of solar radiation by water surface, emission and absorption of atmospheric thermal infrared radiation (TIR) by water, convective heating of water as well as heat loss due to evaporative processes. The temporal fluctuation pattern of direct and scattered solar radiation depends on the zenith angle and atmospheric absorption. The dominant water heating factor is solar radiation during the daytime and atmospheric TIR at night. Emits TIR defined by the Stefan-Boltzmann law. Water temperatures 124 km downstream of the Krasnoyarsk HPP on the Yenisei River computed using the proposed model with consideration of morphometric characteristics are close to the recorded temperatures observed at the gauging stations, which proves that the deployed physical-mathematical model providing an adequate description of the actual hydrothermal processes. Our spatial-temporal analysis has revealed no diurnal fluctuations of water temperature, which we attribute to the fact that “cold” water leaving the dam enters the “warm” surrounding environment providing a permanent source of water heating.

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Держатели документа:
Институт вычислительного моделирования СО РАН
Институт вычислительных технологий СО РАН
Сибирский федеральный университет

Доп.точки доступа:
Шапарев, Николай Яковлевич; Shaparev Nikolay Yakovlevich; Шокин, Юрий Иванович; Shokin Yuriy Ivanovich

/ N. Y. Shaparev, Y. I. Shokin, O. E. Yakubailik // IOP Conference Series: Earth and Environmental Science : Institute of Physics Publishing, 2018. - Vol. 211: International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems, ENVIROMIS 2018 (5 July 2018 through 11 July 2018, ) Conference code: 143586, Is. 1, DOI 10.1088/1755-1315/211/1/012022 . -
Аннотация: The summertime hydrothermal regime of the Yenisei River downstream of the Krasnoyarsk hydroelectric power plant is modeled using a remote sensing and deterministic approach. The Fourier equation is used, and the following physical processes contributing to the heat exchange between the water and the surroundings are taken into consideration: the absorption of direct and scattered solar radiation by water, the absorption of downwelling thermal infrared radiation (TIR) from the atmosphere by water surface, TIR back from the water surface, the convection of heat and the heat loss due to evaporation of water. A clear-skies river thermal regime under no wind condition is studied at 32-km downstream the power plant, and the obtained results are compared against remote sensing data. © Published under licence by IOP Publishing Ltd.

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Держатели документа:
Institute of Computational Modelling of the Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/44, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny pr., 79., Krasnoyarsk, 660041, Russian Federation
Institute of Computational Technologies of the Siberian Branch of the Russian Academy of Sciences, Academician M.A. Lavrentiev avenue, 6., Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Shaparev, N. Y.; Shokin, Y. I.; Yakubailik, O. E.

/ A. Andrianova // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2018. - Vol. 18: 18th International Multidisciplinary Scientific Geoconference, SGEM 2018 (2 July 2018 through 8 July 2018, ) Conference code: 142896, Is. 3.1. - P203-210, DOI 10.5593/sgem2018/3.1/S12.027 . -
Аннотация: Yenisei River is the main Siberian river, it is one of the seven largest rivers in the world and it is the most high-water river in Russia. It is known that the emergence of large hydraulic structures causes a prolonged, and sometimes irreversible, destabilization of aquatic ecosystems. The construction of Krasnoyarsk hydroelectric power station (HPS) caused global changes in hydrological, hydrochemical and hydrobiological regimes in the Yenisei River. The Yenisei River in the downstream of the HPS does not freeze in winter over 100-300 km from the dam. Hydropower engineering has caused global changes in Yenisei’s zoobenthos, especially in the HPS downstream. The stoneflies and blackflies have almost disappeared from the benthic fauna, the density and number of caddisflies and mayflies species have significantly decreased. Quantitative characteristics of zoobenthos in the area from the dam to the Angara’s estuary have greatly increased: quantity – by more than 2 times, biomass – by 5 times. The growth of indicators is determined, firstly, by the spread of Gammaridae from Lake Baikal through the Angara river upstream of the Yenisei, while their proportion in the total zoobenthos biomass increased by 10 times. This work is devoted to the spatial dynamics of Baikal endemic amphipods in the Yenisei, which spread far beyond the Baikal not only downstream, but also upstream. The results of expedition hydrobiological studies, conducted in 2015-2016 in several zones of the Yenisei River from its head to the mouth, are presented. Throughout the river, Gmelinoides fasciatus quantitatively dominated among the Gammaridae, Philolimnogammarus viridis took the second place. Only in the lower reaches and in the delta of the Yenisei the leading positions were transferred to Pontoporeia affinis-a representative of the estuary-relic complex of organisms. Baikal endemics actively populated the Upper Yenisei section below the Sayano-Shushensky hydroelectric power station, especially in the areas of massive macrophyte distribution. There is a divergence of ecological niches in G. fasciatus and Ph. viridis in the Yenisei: the dominant prefers silty sand-and-shingle biotopes with a calm speed rate; the subdominant tends to prefer stony-pebble bottom washed by a rapid current. Over the past 15 years, the density and proportion of crustaceans in the zoobenthos have increased in the Angara-Podkamennaya Tunguska section. © SGEM2018 All Rights Reserved.

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Держатели документа:
Institute of Computational Modeling of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Scientific Research Institute of Ecology of Fishery Reservoirs, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Andrianova, A.

[Текст] : статья / Ю. А. Пономарева, И. Г. Прокопкин // Вода: химия и экология. - 2018. - № 10-12. - С. 36-42 . - ISSN 2072-8158
   Перевод заглавия: The influence of Krasnoyarsk hydropower station flow rate on the temperature regime and the amount of phytoplankton downstream of the dam
Аннотация: В результате многолетних натурных наблюдений определены факты влияния повышенной скорости сброса воды через шлюзы плотины Красноярской ГЭС на динамику фитопланктона р. Енисей ниже плотины. Высказано предположение, что механизм влияния данного фактора заключается в следующем: повышенный сброс воды изменяет температуру воды реки в нижнем бьефе, что в свою очередь влияет на динамику численности фитопланктона. Справедливость данного предположения подтверждается данными 2008-2016 гг. Установлено, что во все рассматриваемые годы, пики численности и биомассы фитопланктона приходятся на июнь за счет диатомовых водорослей, попадающих в нижний бьеф со стоком из верхнего бьефа. Полученные результаты могут быть применены для составления прогнозов динамики фитопланктона в нижнем бьефе в следующие временные периоды.
Using multiyear measurements, we investigated the influence of high flow rates at Krasnoyarsk hydropower station (Krasnoyarsk HPS) on the phytoplankton population of Yenisei River downstream of the dam. We propose the hypothesis that flow rate variations are changing water temperature, which is influencing on phytoplankton dynamics. This hypothesis is verified by measurements of 2008-2016 years. The peaks of number and biomass of phytoplankton were recorded in June in all years in question due to the flow of diatoms from the upstream of the dam. Found relationships could be used for preparation of prognosis of the phytoplankton dynamics downstream of the dam.

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Держатели документа:
Институт биофизики СО РАН - обособленное подразделение «Федеральный исследовательский центр «Красноярский научный центр Сибирского отделения Российской академии наук»
Институт вычислительного моделирования СО РАН - обособленное подразделение «Федеральный исследовательский центр «Красноярский научный центр Сибирского отделения Российская академия наук»

Доп.точки доступа:
Пономарева, Ю.А.; Ponomareva Yu.A.; Прокопкин, И.Г.; Prokopkin I.G.

[Текст] : доклад, тезисы доклада / Н. Я. Шапарев, Ю. И. Шокин, О. Э. Якубайлик // = Международная конференция и школа молодых ученых по измерениям, моделированию и информационным системам для изучения окружающей среды: ENVIROMIS-2018 / International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems: ENVIROMIS-2018 (2018 ; 05.06 - 11.07 ; Томск) : Томский центр научно-технической информации . - ISBN 978-5-89702-441-4
   Перевод заглавия: Research of hydrothermal regime in the Krasnoyarsk hydroelectric power station downstream by mathematical modeling and remote sensing

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Держатели документа:
Институт вычислительного моделирования СО РАН, ФИЦ КНЦ СО РАН
Институт вычислительных технологий СО РАН
Сибирский федеральный университет

Доп.точки доступа:
Шапарев, Н.Я.; Shaparev N.Ya.; Шокин, Ю.И.; Shokin Yu.I.; Якубайлик, О.Э.; Yakubailik O.E.; International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems: ENVIROMIS-2018(2018 ; 05.06 - 11.07 ; Томск)
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