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1.
D. S. Drozdov F. M. Rivkin V. Rachold G. V. Ananjeva-Malkova N. V. Ivanova I. V. Chehina M. M. Koreisha Yu. V. Korostelev E. S. Melnikov 《Geo-Marine Letters》2005,25(2-3):81-88
A set of digital maps including geology, Quaternary sediments, landscapes, engineering-geological, vegetation, geocryological and the series of regional sources have been selected to characterize the Russian Arctic coast. Based on this data, new maps of engineering geocryological zoning and zoning of the coast with respect to the intensity of exogenous geological processes and risk of technogenic impacts have been generated at the scales of 1:4,000,000–1:8,000,000. These maps are a tool to assess the impact of industry on the Arctic coast of the country. 相似文献
2.
Comparison study data on the hydrochemical parameters, bacterio- and phytoplankton, and reduction–oxidation characteristics of two ponds in Krasnoyarsk are presented. These water bodies are of interest due to the fact that the ecosystems of these natural model objects respond to eutrophication in different ways. It is assumed that the reason for this difference is in the hydrophysical characteristics depending on the morphology of the basins of the water bodies rather than in the hydrochemical characteristics. 相似文献
3.
An original concept of salinization of coals at the peat bog generation stage is substantiated on the basis of on new data. The distribution of saline coals within coal and hydrocarbon basins has been revealed to be wider than it was previously assumed. The degree of salt enrichment of organic matter in coal is related to paleogeographic formation conditions of peat bogs that facilitated the penetration of sea waters (under conditions of paralic basins) or NaCl-rich solutions (related to wash-out of halogenic formations) into the coals. The initial salinization degree does not remain constant, because it is intimately related to superimposed processes leading to the desalinization of coals. The desalinization is controlled by the degree of coalification and realized under favorable tectonic and hydrogeological conditions. The paper presents a review of the current state of the elaboration of techniques for saline coal utilization that must meet requirements of economic and multipurpose utilization of raw material and environment protection. 相似文献
4.
V. V. Shashkin M. A. Tolstykh A. R. Ivanova E. N. Skriptunova 《Russian Meteorology and Hydrology》2017,42(9):554-563
The SL-AV atmospheric model version using hybrid vertical coordinates combies the advantages of sigma and isobaric coordinates. The formulation and discretization of model equations maintain the equivalency of the new model version to the basic sigma version in the special case, when hybrid coordinates coincide with sigma coordinates. The SL-AV model version with hybrid vertical coordinate is verified with medium-range weather forecasts. The decrease in the errors of predicted geopotential height and wind as compared to the sigma model version is demonstrated. The use of hybrid coordinates also leads to a certain increase in forecast skill scores for some meteorological parameters characterizing aviation significant weather. 相似文献
5.
Am 22. September 1987 wurde am Bulgarischen National Observatorium von ELST, IVANOVA und SHKODROV (1987) ein schnell bewegliches Objekt 17. Größe entdeckt. Durch internationale Zusammenarbeit konnte der Apollotyp-Asteroid 1987SB bis zum 15. Januar 1988 verfolgt werden. 相似文献
6.
N. Ivanova K. Belczynski J. M. Fregeau F. A. Rasio 《Monthly notices of the Royal Astronomical Society》2005,358(2):572-584
We study the evolution of binary stars in globular clusters using a new Monte Carlo approach combining a population synthesis code ( startrack ) and a simple treatment of dynamical interactions in the dense cluster core using a new tool for computing three- and four-body interactions ( fewbody ). We find that the combination of stellar evolution and dynamical interactions (binary–single and binary–binary) leads to a rapid depletion of the binary population in the cluster core. The maximum binary fraction today in the core of a typical dense cluster such as 47 Tuc, assuming an initial binary fraction of 100 per cent, is only ∼ 5–10 per cent. We show that this is in good agreement with recent Hubble Space Telescope observations of close binaries in the core of 47 Tuc, provided that a realistic distribution of binary periods is used to interpret the results. Our findings also have important consequences for the dynamical modelling of globular clusters, suggesting that 'realistic models' should incorporate much larger initial binary fractions than has usually been the case in the past. 相似文献
7.
S. A. Borysenko Yu. V. Sizonenko I. V. Luk’yanyk A. V. Ivanova A. D. Voitsekhovskaya T. P. Sergeeva A. V. Golovin 《Kinematics and Physics of Celestial Bodies》2011,27(2):92-97
Photometric measurements of photographic images of comet C/1987 P1 Bradfield have been carried out with a flat-bed scanner
equipped with a slide module. Lengthwise and transverse photometric profiles of the cometary plasma tail have been obtained.
Magnetic field induction and some other physical characteristics of the cometary plasma tail observed in November 1987 have
been estimated with the use of the diffusion model for a cometary tail by Shul’man and Nazarchuk (1968). It has been shown
that the scanned images of comets can be used for estimating the physical characteristics of cometary tails. 相似文献
8.
A. V. Ivanova V. L. Afanasiev P. P. Korsun A. R. Baranskii M. V. Andreev V. A. Ponomarenko 《Solar System Research》2012,46(4):313-319
The results of the photometric observations of comet 29P/Schwassmann-Wachmann 1 are analyzed. The comet demonstrates substantial activity at heliocentric distances larger than 5 AU, i.e., outside the water ice sublimation zone. The CCD images of the comet were obtained in wideband R filters at the 6-meter telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS) and at the 2-meter Zeiss-2000 telescope of the Peak Terskol Observatory. The processing of the images with special digital filters allowed the active structures (jets) to be distinguished in the dust coma of the comet. With the cross-correlation method, the rotation period of the cometary nucleus was determined as 12.1 ± 1.2 and 11.7 ± 1.5 days for the observations taken in December 2008, and February 2009, respectively. The probable causes of the difference in the estimates of the rotation period of the cometary nucleus obtained by different authors are discussed. 相似文献
9.
A. M. Zvyagintsev N. S. Ivanova I. N. Kuznetsova V. A. Lapchenko N. V. Tereb 《Russian Meteorology and Hydrology》2016,41(9):662-664
The review is compiled on the basis of the operation of the total ozone (TO) monitoring system in the CIS and Baltic countries that functions in the operational regime at the Central Aerological Observatory. The monitoring system uses the data from the national network equipped with M-124 filter ozonometers under methodological supervision of the Main Geophysical Observatory. The quality of the functioning of the entire system is under the operational control based on the observations obtained from the OMI satellite equipment (NASA, the United States). The basic TO observation data are generalized for each month of the second quarter of 2016 and for the quarter as a whole. The data of routine observations of surface ozone content carried out in the Moscow region and Crimea are also presented. 相似文献
10.
O. S. Ivanova 《Oceanology》2008,48(3):357-363
It was shown that the supply of high nutrient concentrations via the western part of the Bering Strait to the Chukchi Sea is mainly caused by the quasi-stationary cyclonic eddy located between the Chukchi Peninsula and St. Lawrence Island. A quantitative estimation of the nutrient supply via the Bering Strait was made. 相似文献