The response of thunderstorm VLF radio noise to solar activity according to observations in Yakutsk     

V. I. Kozlov  V. A. Mullayarov  R. R. Karimov 《Geomagnetism and Aeronomy》2009,49(8):1296-1298

The relation between the long-term variations in the thunderstorm VLF radio noise intensity and solar activity in 1979–2006 has been studied. The sunspot number (the Wolf number) was used as a parameter characterizing solar activity. The intensity of VLF noise registered in Yakutsk characterizes thunderstorm activity in Eastern Siberia (0100–0500 UT) and in the African thunderstorm center (1300–1700 UT). Using the results of a correlation analysis, it has been found that thunderstorm activity in Eastern Siberia and in the African world centre is in antiphase with a change in the sunspot number. The highest anticorrelation coefficients between solar activity and thunderstorm discharge intensity were obtained for thunderstorms in Eastern Siberia. In this case the maximal correlation coefficients (R = −0.59 and −0.75) were obtained for the average monthly values of the VLF radio noise intensity in August, measured at 0400 UT and 1600 UT, respectively.  相似文献   

Origin of corundum rocks of the Belomorian mobile belt: Evidence from noble gas isotope geochemistry     

E. Yu. Akimova  E. N. Kozlov  K. I. Lokhov 《Geochemistry International》2017,55(11):1000-1009

The noble gas isotopic composition is studied in gas-liquid microinclusions from minerals of the corundum-bearing and host rocks of the Khitoostrov occurrence, North Karelia. It was established for the first time that fluid participating in the formation of rocks with anomalous oxygen isotopic composition is devoid of an atmospheric component, while helium and neon show significant fractionation relative to argon. The formation of rocks with extremely light oxygen isotope composition was related to the effect of endogenous fluid.  相似文献   

Absolute Calibration of the MTVZA-GY Microwave Radiometer Atmospheric Sounding Channels     

Uspensky  A. B.  Asmus  V. V.  Kozlov  A. A.  Kramchaninova  E.  Streltsov  A. M.  Chernyavsky  G. Ya.  Cherny  I. V. 《Izvestiya Atmospheric and Oceanic Physics》2017,53(9):1192-1204

Izvestiya, Atmospheric and Oceanic Physics - The microwave MTVZA-GY imager/sounder is one of the key instruments onboard the Meteor-M N2 satellite (launched in July, 2014). The MTVZA-GY data...  相似文献   

Platinum group element mineralization of the Svetly Bor and Veresovy Bor clinopyroxenite–dunite massifs,Middle Urals,Russia     

S. Yu. Stepanov  K. N. Malitch  A. V. Kozlov  I. Yu Badanina  A. V. Antonov 《Geology of Ore Deposits》2017,59(3):244-255

The new data for the geology and mineralogy of the platinum group element (PGE) mineralization related to the chromite–platinum ore zones within the dunite of the Svetly Bor and Veresovy Bor massifs in the Middle Urals are discussed. The geological setting of the chromite–platinum ore zones, their platinum content, compositional and morphological features of the platinum group minerals (PGM) are compared to those within the Nizhny Tagil massif, the world standard of the zonal complexes in the Platinum Ural belt. The chromite–platinum orebodies are spatially related to the contacts between differently granular dunites. Majority of PGM are formed by Pt–Fe alloys that are close in terms of stoichiometry to isoferroplatinum (Pt₃Fe), and associated with Os–Ir alloys, Ru–Os and Ir–Rh sulfides, and Ir–Rh thiospinels of the cuproiridsite–cuprorhodsite–ferrorhodsite solid solution. The tetraferroplatinum (PtFe)–tulameenite (PtFe_0.5Cu_0.5) solid solution and Pt–Cu alloys belong to the later PGM assemblage. The established features of the chromite–platinum ore zones testify to the highly probable identification of the PGE mineralization within the dunite of the Svetly Bor and Vesesovy Bor massifs and could be used in prospecting and exploration for platinum.  相似文献   

Simultaneous observations of the natural electromagnetic emission in the ELF-VLF range at Kamchatka and in Yakutia during the solar eclipse of August 1, 2008     

G. I. Druzhin  V. N. Uvarov  V. A. Mullayarov  V. I. Kozlov  A. A. Korsakov 《Geomagnetism and Aeronomy》2010,50(2):211-218

The effect of the solar eclipse that occurred on August 1, 2008, on the level of the natural electro-magnetic emission signals in the ELF-VLF range, simultaneously observed at Kamchatka and in Yakutsk, and the variations in the amplitude and phase of signals from the VLF radiostations, registered in Yakutsk, has been considered. The VLF radiostations in Krasnodar, Novosibirsk, and Khabarovsk successively emitted signals at frequencies of 11 905, 12 649, and 14 880 Hz. Based on the observations of the signals from these radiostations, it has been established that the signal amplitudes and phases increased by 3–5% and 30°–45° when the signals crossed the lunar shadow region. The synchronous registration of the ELF-VLF noise emission indicated that a bay-like increase and the following decrease in the emission to the background level was observed at both receiving points during the eclipse from ∼1000 to 1130 UT. This effect was registered at frequencies of 0.6–5.6 kHz in Yakutsk and at lower (30–200 Hz) and higher (2.5–11 kHz) frequencies at Kamchatka. In this case the noise emission intensity maximum was observed when the lunar shadow maximally approached the registration point. At higher frequencies, the emission maximum was observed simultaneously at both points (at 1100 UT) but with a delay relative to the maximum at lower frequencies. The possible causes of the appearance of the solar eclipse effects in the natural ELF-VLF emission are considered.  相似文献   

Rare-earth elements as indicators of ore sources and the degree of differentiation and ore potential of rare-metal granite intrusions (eastern Transbaikalia)     

V.D. Kozlov 《Russian Geology and Geophysics》2009,50(1):29-42

The meteoritic-material-normalized REE patterns of rare-metal granite intrusions of the ore-bearing Kukul'bei complex (J2–J3), eastern Transbaikalia, were studied. It is shown that the intrusions were initially enriched in granitophile volatiles and trace elements (rare metals), i.e., this phenomenon is not related to the differentiation of their parental magma chambers. On the differentiation of the Kukul'bei rare-metal intrusions, the REE contents decrease in passing from granites of the main intrusive phase (MP) to late leucocratic differentiates (muscovite and amazonite granites), the differentiates become more enriched in granitophile elements, and their rare-metal contents drastically increase as compared with the MP granites. The ore-bearing bodies of muscovite and amazonite granites have extremely low REE contents and the highest contents of granitophile (including ore-forming) elements.The REE patterns of the Kukul'bei intrusive differentiates are not universal among rare-metal intrusions. By the example of highly ore-bearing rare-metal granite intrusions of the Erzgebirge, Central Europe, it has been established that their late deep-seated differentiates (ultrarare-metal lithionite-zinnwaldite Li-F-granites) accompanied by highly productive Sn-W mineralization concentrate both granitophile elements and REE (particularly HREE). Among the studied Transbaikalian rare-metal intrusions of the Kukul'bei complex, only the differentiates of the most ore-bearing Sherlovaya Gora intrusive system belong to the above type. The analysis of the REE patterns of the Kukul'bei granites confirmed the earlier conclusions on the low ore potential of the rare-metal mineralization of the studied intrusive complex.  相似文献   

Multidimensional Data Analysis in the Assessment of Ice-Jam Formation in River Basins     

Kozlov  D. V.  Kuleshov  S. L. 《Water Resources》2019,46(2):152-159

Water Resources - The analysis and evaluation of the factors that have an effect on the frequency of ice jams and the characteristics of the accompanying floods have been shown to remain an...  相似文献   

Critical analysis of active methods of ozone layer recovery     

S. Z. Bekker  A. P. Doronin  S. I. Kozlov 《Geomagnetism and Aeronomy》2017,57(5):630-636

A critical analysis is given for various methods for recovery of the ozone layer of the Earth: the emission of alkane gases, the destruction of freons by laser IR radiation and with microwave discharge, exposure to laser UV radiation and electric discharge in the atmosphere, the use of solar radiation, laser infrared radiation, and gamma rays, and the creation of an artificial formation at high altitudes that shields the solar radiation dissociating ozone. The optimal methods are discussed in terms of their effectiveness, economic costs, and environmental consequences. These include the use of gamma rays sources, electric discharge in the atmosphere, and microwave breakdown.  相似文献   

Optical Phenomena Observed upon Some Launches of Russian Rockets     

S. I. Kozlov  S. Sh. Nilolaishvili  Yu. V. Platov 《Geomagnetism and Aeronomy》2018,58(1):135-141

In this paper, unusual optical phenomena observed in our country and abroad upon launches of Russian rockets are discussed and interpreted: they are regarded as the aftereffects of sunlight scattering by gas-dust clouds created by rocket fuel combustion products in different modes of engine operation. The results of instrumental observations of the clouds can be used to study physical processes in the upper atmosphere.  相似文献   

Ethnic processes in the USSR     

V.I Kozlov 《Geoforum》1972,3(1):47-53

The article characterizes the multinational composition of the population of the USSR and the processes of ethnic consolidation and mutual rapprochement of nationalities which are taking place here. This latter process is illustrated by data on the linguistic situation.  相似文献