岩石层—大气层—电离层耦合作为震前大气层和电离层短临事件的影响机制     

O.Molchanov  E.Fedorov  A.Schekotov  E.Gordeev  V.Chebrov  V.Surkov  A.Rozhnoi  S.Andreevsky  D.Iudin  S.Yunga  A.Lutikov  M.Hayakawa  P.F.Biagi  滕荣荣 《世界地震译丛》2009,(2):40-52

介绍了大气层和电离层震前现象机制的基本观念。简短回顾了观测结果后,我们得出结论：1．流体下层物质（气泡）向上迁移能导致近地表的热水／气体被逐出,并在强度弱化的地区引发地震;2．因此,气泡出现的时间和地点是随机的,但是地震、地球化学异常和前震（地震、SA和超低频电磁异常）是随机关联的;3．大气温度和密度扰动跟随着震前热水／气体释放,导致产生周期为6～60min的大气重力波（AGW）;4．地震引发的大气重力波能导致电离层扰动变化并导致大气层中地平线上无线电波传播、下部电离层低频波扰动和地面超低频辐射衰减的变化。  相似文献   

Method for detection of direction and speed of cloud propagation based on the structure of cloudiness self-radiation within the range of 8–13 μm     

M. I. Allenov  A. V. Artyukhov  V. N. Ivanov  N. D. Tret’yakov  V. O. Fedorov 《Russian Meteorology and Hydrology》2012,37(4):286-290

The method for determining the direction and speed of cloud propagation is presented. The method is based on the cloud field self-radiation within the range of 8?C13 ??m using an automated wide-panoramic scanning system for objective parameterization of the form and cloud amount during the day- and nighttime. The proposed method is based on pairwise comparison of neighboring frames and calculation of shift direction.  相似文献   

Sources of Eocene Magmatism in Western Kamchatka by the Geochemical and Sr–Nd–Pb Isotope Characteristics of Basites     

Fedorov  P. I.  Perepelov  A. B.  Kovalenko  D. V.  Dril  S. I.  Lobanov  K. V. 《Doklady Earth Sciences》2019,487(1):835-840

Doklady Earth Sciences - The isotope and geochemical characteristics of Eocene–Oligocene igneous rocks of Western Kamchatka were studied. It was shown that igneous rocks of the Eocene Kinkil...  相似文献   

Vertical structure of currents in the upper part of the continental slope of the Black Sea in the Region of Gelendzhik     

A.?N.?MorozovEmail author  A.?G.?Zatsepin  S.?B.?Kuklev  A.?G.?Ostrovskii  S.?V.?Fedorov 《Izvestiya Atmospheric and Oceanic Physics》2017,53(6):632-640

The results of a joint analysis of the synchronous-profile ensemble of density and current velocity measured using the autonomous moored Aqualog profiler at the Gelendzhik experimental site of the Shirshov Institute of Oceanology in 2013–2015 are presented. The distribution of probability density of current velocity by directions reveals the presence of two well-pronounced maxima in the southeastern and northwestern sectors at all depths of measurements, which confirms the bimodal direction of the currents in the study site. We consider in detail the vertical structure of the density stratification and the current velocity corresponding to the modes determined from the maximum of the probability density distribution of the current velocity by directions. The averaged profiles of the kinetic, potential, and total energies are given. The results of isopycnic averaging over the entire ensemble of profiles indicate that possible self-similarity exists in the dependence of the vertical distribution of density and kinetic energy.  相似文献   

The western part of the West Siberian petroleum megabasin: geologic history and structure of the basement     

K.S. Ivanov  V.A. Koroteev  M.F. Pecherkin  Yu.N. Fedorov  Yu.V. Erokhin 《Russian Geology and Geophysics》2009,50(4):365-379

On the basis of complex research into the western part of the West Siberian Plate, a new scheme of the structure-formation zones of its basement has been developed and a new geological map of its pre-Jurassic basement has been compiled. Ophiolites and other mafic-ultramafic complexes (fragments of the oceanic Earth's crust) were studied. The most complete Late Ordovician ophiolite complex comprising a melange of serpentinites, gabbroids, plagiogranites, and basalt with jasper interbeds lies in the Shaim area. Weakly altered spinel lherzolites were also examined there. The research has revealed not only Ordovician but also Devonian basalts as well as gabbroid complexes (392 Ma, Sm-Nd dating). The Paleozoic geodynamic history of the region was terminated with collision, which was accompanied by tectonic piling and the intrusion of granite plutons, metamorphism, and formation of new continental crust. These crucial events, which consolidated Paleozoic complexes throughout the vast area of the future West Siberian megabasin, date from the Early Permian. The composition, age, and nature of granitoid plutons in western West Siberia were studied, and isochrons and isotope characteristics were obtained, which give an insight into both the genesis and age of granite plutons and their subsequent transformations.  相似文献   

Geomagnetically Induced Currents and Space Weather: Pi3 Pulsations and Extreme Values of Time Derivatives of the Geomagnetic Field’s Horizontal Components     

N. V. Yagova  V. A. Pilipenko  E. N. Fedorov  A. D. Lhamdondog  Yu. P. Gusev 《Izvestiya Physics of the Solid Earth》2018,54(5):749-763

The problem of estimating the time derivatives of the horizontal components of the geomagnetic field and forecasting the probability of the occurrence of perturbations that exceed a given threshold level (the over-threshold perturbations) arises in the applications concerned with the geomagnetically induced currents (GICs). In this work, we consider the temporal and spatial structure of the Pi3 pulsations with quasi-periods of 10² to 10³ s during which the auroral and subauroral stations of the IMAGE network record over-threshold values in the derivatives of the meridional (along the longitudinal circle) B_X component and latitudinal (along the latitudinal circle) B_Y component. The extreme |dB_X/dt| values mainly develop against the background of the Pi3 pulsations with a complex frequency content, whereas the extreme |dB_Y/dt| values appear when the buildup (decay) phases of the bay-like disturbance associated with the evolution of a substorm coincide with the respective phases of the field of pulsations. The conditions under which the derivatives |dB_X/dt| and |dB_Y/dt| reach their over-threshold values are studied for subauroral latitudes by the technique of superposed epoch analysis. The extreme values of the derivatives most frequently occur during the main phase of moderate magnetic storms or beyond the storm—during high substorm activity under the conditions of a negative vertical component of the interplanetary magnetic field. The probability of the occurrence of over-threshold values increases at high amplitudes of the Pi3 pulsations and depends on their spectral content. The problem of analyzing and forecasting the over-threshold |dB_Y/dt| perturbations is complicated by the fact that the scale of the perturbations is small along the lines of latitude and large along the meridians. This can result in GIC excitation in the North–South oriented electric power lines by the geomagnetic perturbations localized within a narrow band in longitude which can be missed during the measurements.  相似文献   

Features of the Earth’s Solar Climate Changes in the Present Epoch     

Fedorov  V. M. 《Geomagnetism and Aeronomy》2020,60(7):993-998

Geomagnetism and Aeronomy - Calculated insolations of the Earth are analyzed. The main trends in the modern solar climate change are identified: increased latitudinal contrast and smoothed seasonal...  相似文献   

Sulfite-Reducing Clostridia and their Participation in Methane and Hydrogen Sulfide Formation in the Bottom Sediments of Water Objects and Streams of the ETR South     

Fedorov  Yu. A.  Gar&#;kusha  D. N.  Trubnik  R. G.  Morozova  M. A. 《Water Resources》2019,46(1):S85-S93

Water Resources - The article discusses the role of sulfite-reducing clostridia in methane and hydrogen oxide formation in bottom sediments. The examined materials have been accumulated in the...  相似文献   

Intensity of galactic cosmic rays in the early sun epoch     

Yu. I. Fedorov  B. A. Shakhov  Yu. L. Kolesnyk 《Kinematics and Physics of Celestial Bodies》2017,33(1):1-12

The process of heliospheric modulation of intensity of galactic cosmic rays is investigated by solving the transport equation. The spatial-energetic distribution of cosmic rays in the present epoch and in the past is analyzed. It is demonstrated that the particle density and the energy density of cosmic rays in the Solar System in the distant past were much lower than the corresponding current values. The cosmic ray intensity modulation in the early heliosphere was especially strong in the case of low-energy particles.  相似文献   

Cosmic-ray propagation in inhomogeneous large-scale magnetic fields: A pitch-angle diffusion and convection     

M. E. Katz  Yu. I. Fedorov  M. Stehlík 《Astrophysics and Space Science》1990,163(1):49-58

The CIV and SiIV resonance doublets of 43 Be stars are investigated. Measurements of the equivalent widths seem to reveal a correlation between the strenght of the lines and the projected rotational velocity (v sini). it is discussed whether this result indicate that the wind region is not spherically symmetric.  相似文献