排序方式: 共有38条查询结果,搜索用时 31 毫秒
1.
Aldar P. Gorbunov 《冰川冻土》2004,26(Z1):197-200
The coarse-detrital deposits have the properties of cold accumulation and maintenance of cold for a long time. Now, at some place where the mean annual temperature of air is positive, one even can get the permafrost by artificial formation of the burial mound. According to these properties, some lowenergy storehouses are built for various purposes. 相似文献
2.
Bubukin I. T. Rakut I. V. Agafonov M. I. Yablokov A. A. Pankratov A. L. Gorbunova T. Yu. Gorbunov R. V. 《Astronomy Reports》2021,65(7):598-614
Astronomy Reports - The feasibility of expanding the evaluation parameters was discussed when selecting the “Karadag” test site for the installation of millimeter-wave antennas based on... 相似文献
3.
Gorbunov M. E. Koval O. A. Mamontov A. E. 《Izvestiya Atmospheric and Oceanic Physics》2020,56(1):52-60
Izvestiya, Atmospheric and Oceanic Physics - The phase-screen (split-step) method is widely used for modeling wave propagation in inhomogeneous media. The method of plane phase screens is best... 相似文献
4.
A. R. Geptner T. A. Ivanovskaya E. V. Pokrovskaya S. M. Lyapunov A. T. Savichev A. V. Gorbunov N. V. Gor’kova 《Lithology and Mineral Resources》2007,42(5):453-476
Results of the mineral and chemical study of surface-altered hyaloclastites from the Theistareykir and Nämafjall geothermal zones, the North Iceland rift, are considered. The paper scrutinizes the composition of hydrothermally altered rocks mainly consisting of clay minerals related to the transformation of bedrock hyaloclastites. The clay minerals also make up slope talus or proluvial deltas around highlands. The major clay minerals in areas of the present-day fumarole activity are kaolinite and smectite, while the redeposited talus-proluvial sediments are mainly composed of smectites. The studied rocks contain framboids, globules, rods, and other structures with morphology and size similar to those of mineralized bacteria. The local concentration of Ag in proluvial deposits is attributed to the intense bacterial activity. It is supposed that elevated contents of some trace elements could be related to an intense microbiotic influence. 相似文献
5.
Yu. G. Safonov G. I. Gorbunov A. A. Pek A. V. Volkov T. M. Zlobina G. G. Kravchenko E. P. Malinovsky 《Geology of Ore Deposits》2007,49(5):343-371
The current status of investigations of the structure of ore fields and deposits in Russia is considered. The importance of traditional lines of research in this field and the great body of information acquired is emphasized. The changes in ideas of geodynamic and tectonic crustal evolution have made it necessary to alter concepts of the geological and structural position of ore fields and deposits. New challenges are caused by these changes and progress in the knowledge of ore deposits and the depth of their formation, as well as geodynamic, tectonophysical, and hydrodynamic processes in ore-bearing crustal blocks. The results of hydrodynamic modeling of deposit formation controlled by deeply penetrating fault zones are discussed. Various relationships between hydrodynamic and structural factors in ore formation are considered. 相似文献
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7.
V.B. Polyakov S.D. Mineev G. Hu D.A. Khramov V.E. Gorbunov 《Geochimica et cosmochimica acta》2005,69(5):1287-1300
Oxygen isotope equilibrium fractionation constants (β18O-factors) of cassiterite were evaluated on the basis of heat capacity and X-ray resonant (Mössbauer spectroscopy and X-ray inelastic scattering) data.The low-temperature heat capacity of cassiterite was measured in the range from 13 to 340 K using an adiabatic calorimeter. Results of measurements of two samples agree very closely but deviate more than 5% from previous heat capacity data used for calculation of thermodynamic functions. The temperature dependence of heat capacity was treated using the modern version of the Thirring expansion, and the appropriate temperature dependence of the vibrational kinetic energy was found.Measurements of temperature-dependent Mössbauer parameters of cassiterite were conducted in the range from 300 to 900 K. The attempt to describe Mössbauer fraction and the second order Doppler (SOD) shift on the basis of the Debye model failed. The first term of the Thirring expansion of the Mössbauer SOD shift agrees with that calculated from the Sn sublattice vibration density of states (VDOS) obtained via synchrotron X-ray scattering. Based on this agreement we calculated the kinetic energy of the cassiterite Sn sublattice from VDOS.From the kinetic energy of the total cassiterite crystalline lattice and its Sn sublattice, β18O-factors of cassiterite were computed in the temperature range 300-1500 K by the method of Polyakov and Mineev (2000). Appropriate polynomials, which are valid at temperatures above 400 K, are the following:
8.
Yu. A. Gorbunov L. N. Dyment S. M. Losev S. V. Frolov 《Russian Meteorology and Hydrology》2008,33(9):594-599
A brief characteristic of the Arctic ice cover discontinuities (ICD) is given. Their practical importance for vessels operating in this region as well as necessity of forecasting such indicators as the prevailing disposition of discontinuities and location of zones of their formation and closure are noted. The forecasting technique is based on the method of complex analogs. A summary of forecasts produced for the Arctic navigation areas since 1991 is provided. It is shown, that recent upgrading of the original methodology allowed to produce forecasts in on-line mode, to present digital maps of the forecast data, and to transfer them directly to the vessel’s automated workplace. A number of practical examples are presented for illustrating the navigation efficiency if forecast and actual ICD data are used. The results of forecast verification are given. 相似文献
9.
Atkin E. V. Bulatov V.L. Vasiliev O. A. Voronin A. G. Gorbunov N. V. Grebenyuk V. M. Dorokhov V. A. Karmanov D. E. Kovalev I.M. Kudryashov I. A. Kurganov A.A. Merkin M. M. Panov A.D. Podorozhny D. M. Polkov D. A. Porokhovoi S. Yu. Sveshnikova L. G. Tkachev L.G. Tkachenko A. V. Turundaevskiy A. N. Filippov S. B. Shumikhin V. V. 《Astronomy Reports》2019,63(1):66-78
Astronomy Reports - Some results of studies of cosmic rays obtained during the NUCLEON space experiment in 2015–2017 are presented. This experiment was intended for direct measurements of the... 相似文献
10.
Nazarova L. B. Razjigaeva N. G. Diekmann B. Grebennikova T. A. Ganzey L. A. Belyanina N. I. Arslanov K. A. Kaistrenko V. M. Gorbunov A. O. Kharlamov A. A. Golovatyuk L. V. Syrykh L. S. Subetto D. A. Lisitsyn A. P. 《Doklady Earth Sciences》2019,486(1):494-497
Doklady Earth Sciences - Results of a paleolimnological investigation of a well-dated lake sediment section from Shikotan Island (Southern Kurils) showed that from ca 8.0 to 5.8 cal ka BP a warm... 相似文献