Hibbingite and Its Manganoan Variety from Metamorphosed Pentlandite–Putoranite Ores at Deep Levels of the Oktyabrskoe Deposit,Norilsk Ore Field     

Spiridonov  E. M.  Belyakov  S. N.  Ivanova  Yu. A.  Egorov  K. V.  Korotaeva  N. N.  Naumov  D. I.  Yapaskurt  O. V. 《Geology of Ore Deposits》2022,64(7):495-502

Geology of Ore Deposits - Hibbingite, siderite, and their manganoan varieties replacing magnetite and associated sulfides are widespread in tectonized and metamorphosed pentlandite–putoranite...  相似文献   

Ozone content over the Russian Federation in the third quarter of 2015     

A. M. Zvyagintsev  N. S. Ivanova  G. M. Kruchenitskii  I. N. Kuznetsova  V. A. Lapchenko 《Russian Meteorology and Hydrology》2015,40(11):772-775

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Auroral electron precipitation when the trapped radiation region collapsed during the main phase of the geomagnetic storm of May 15, 2005     

L. V. Tverskaya  B. V. Marjin  M. V. Teltsov  T. A. Ivanova 《Geomagnetism and Aeronomy》2009,49(6):750-754

The simultaneous measurements of the boundary of the trapped radiation region, where auroral electrons precipitate, on the Meteor-3M satellite (the circular polar orbit at an altitude of ∼1000 km) and the westward electrojet dynamics during the main phase of a strong (Dst = −263 nT) magnetic storm that occurred on May 15, 2005, are analyzed. At the end of the first hour of the storm main phase, the nightside boundary of the trapped radiation region and the peak of the precipitating electron fluxes with a energies of ∼1 keV shifted toward the Earth to L ∼ 3. The westward electrojet center approached the same L shell. Near the boundary of the trapped radiation region, the auroral electron spectrum had the shape of typical inverted V. The differential spectrum maximum shifted to an energy of ∼100 eV, when the latitude decreased by ∼1°. The nightside boundary of the trapped radiation region, the electron precipitation equatorward boundary, and the westward electrojet center are compared with the known empirical dependences of the position of these structures on the Dst variation amplitude.  相似文献   

Multidisciplinary Investigation of the Transform Fault Zones Doldrums and Vema during Cruise 45 of the R/V “Akademik Nikolaj Strakhov”     

Ivanova  E. V.  Skolotnev  S. G.  Borisov  D. G.  Demidov  A. N.  Bich  A. S.  Gippius  F. N.  Gryaznova  A. S.  Dobroliubova  K. O.  Zinger  T. F.  Korshunov  D. M.  Levchenko  O. V.  Mashura  V. V.  Muccini  F.  Nemchenko  N. V.  Peyve  A. A.  Pertsev  A. N.  Sani  K.  Sanfilippo  A.  Simagin  N. V.  Sokolov  S. Yu.  Ferrando  C.  Chamov  N. P.  Shakhovskoy  I. B.  Sholukhov  K. N. 《Oceanology》2020,60(3):424-426

Oceanology - Herein we provide information on the integrated geological, geophysical, sedimentological, paleoceanographic, hydrophysical and biological investigations in the Central Atlantic during...  相似文献   

Investigation of the Modern Lateral Sedimentation on the Argentine Continental Slope during Cruise 79 of the R/V Akademik Mstislav Keldysh     

Ivanova  E. V.  Borisov  D. G.  Murdmaa  I. O.  Belyaev  N. A.  Zinger  T. F.  Nemchenko  N. V.  Simagin  N. V.  Sipko  A. A.  Shulga  N. A. 《Oceanology》2020,60(6):869-871

Oceanology - Herein we provide information on the sedimentological and paleoceanographic research on the Argentine Patagonian continental slope during cruise 79 of the R/V Akademik Mstislav Keldysh...  相似文献   

Study of Seamounts and Contourite Systems of the Central and South Atlantic during Cruise 43 of the R/V <Emphasis Type="Italic">Akademik Ioffe</Emphasis>     

S. G. Skolotnev  E. V. Ivanova  I. O. Murdmaa  A. A. Peyve  D. G. Borisov  S. M. Isachenko  E. V. Blinova  T. F. Zinger  V. A. Kravtsov  E. A. Ovsepyan  E. A. Seitkalieva  M. O. Ulyanova  D. T. Fidaev 《Oceanology》2018,58(4):621-623

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Three-dimensional model for generation of the mean solar magnetic field     

T. S. Ivanova  A. A. Ruzmaikin 《Astronomische Nachrichten》1985,306(4):177-186

A three-dimensional (non-axisymmetric) model for the solar mean magnetic field generation is studied. The sources of generation are the differential rotation and mean helicity in the convective shell. The system is described by two equations of the first order in time and the fourth order in space coordinates. The solution is sought for in the form of expansion over the spherical function Y_n^m. The modes of different m are separated. A finite-difference scheme similar to the Peaceman-Rachford scheme is constructed so to find coefficients of the expansion depending on the time and radial coordinates. It is shown that a mode with a smaller azimuthal number m is primarily excited. The axisymmetric mode m = o describes the 22 year solar cycle oscillations. The modes of m o have no such periodicity, the oscillate with a period of rotation of the low boundary of the solar convective shell, The solutions which are symmetric relative to the equator plane are excited more easily compared with the antisymmetrical ones. The results obtained are confronted to the observational picture of the non-axisymmetric large-scale solar magnetic fields.  相似文献   

Ozone content over the Russian Federation in the third quarter of 2009     

A. M. Zvyagintsev  N. S. Ivanova  G. M. Kruchenitskii  I. N. Kuznetsova  A. A. Artamonova 《Russian Meteorology and Hydrology》2009,34(11):770-773

The review is compiled based on the results of the operation of the total ozone (TO) monitoring system in the CIS and Baltic countries, functioning in the operational regime at the Central Aerological Observatory (CAO). The monitoring system uses the data from the national network of type M-124 filter ozonometers under control of the Main Geophysical Observatory (MGO); the proper operation of the entire system is under an operational control from observations with the OMI satellite (US NASA) equipment. Basic TO observations data for each month of the third quarter of 2009 and for the quarter as a whole are generalized. Results of regular observations of the surface ozone content carried out by the CAO in the Moscow park zone are considered; they characterize to a great extent the air quality in the surface layer of the Moscow region.  相似文献   

Analysis of formation and forecast of spring snowmelt flood runoff in forest and forest-steppe basins of Siberian rivers     

D. A. Burakov  O. I. Ivanova 《Russian Meteorology and Hydrology》2010,35(6):421-431

Popov’s infiltration-capacitive model of the spring runoff, including the computation of the runoff losses due to evaporation in the period of snow melting and losses due to evaporation and absorption in the period of exhaustion of the sheet inflow into the channel net, is used. Equations to forecast the spring snowmelt flood runoff, taking account of the frozen soil melting, are derived. The method of estimation of their parameters on the base of the joint use of linear regression and optimization methods is realized. It is demonstrated that factors of the autumn moistening and freezing of soils of basins in the beginning of winter influence the spring runoff losses. The integrated index of the initial state of the basin, taking account of mentioned factors, is proposed.  相似文献   

Investigation of tropopause characteristics in the polar zone with the use of radio sounding data at Barrow station     

A. R. Ivanova 《Russian Meteorology and Hydrology》2010,35(3):168-174

Characteristics of the thermal tropopause are computed and analyzed on the base of 18-year series (1990–2007) of radio sounding data at Barrow station. The seasonal and interannual variability of tropopause height and temperature values, as well as of the relative humidity and wind speed at this level are investigated. Investigation of the tropopause “contrast” value, which defines the tropopause as the separating layer, is carried out. It is shown that during the period under review the tropopause has become stronger pronounced, mainly due to the temperature lapse rate increase in the lower stratosphere.  相似文献