Biological Research in the Siberian Arctic Seas in Summer–Autumn 2019 (Cruise of the R/V Professor Levanidov)     

Orlov  A. M.  Gorbatenko  K. M.  Benzik  A. N.  Rybakov  M. O.  Nosov  M. A.  Orlova  S. Yu. 《Oceanology》2021,61(2):295-296

Oceanology - The article presents the results of hydrobiological, ichthyological, trophological, acoustic, and genetic research aboard the R/V Professor Levanidov in the Chukchi, East Siberian,...  相似文献   

Specific features of the relativistic electron flux dynamics during the recovery phase of a magnetic storm on April 6, 2000     

M. F. Bakhareva  L. V. Tverskaya  K. G. Orlova 《Geomagnetism and Aeronomy》2011,51(3):299-304

The energy spectrum of electrons with energies of 0.8–6.0 MeV has been analyzed based on the data of the Express-A2 geostationary satellite and time variations in the fluxes of electrons with energies higher than 0.6 and 2 MeV (according to the GOES-10 satellite data) before and after a weak geomagnetic storm on April 9–10, 2002, which developed during the prolonged (about ten days) recovery phase of a strong magnetic storm on April 6, 2000. The effect of the secondary injection and acceleration caused by an intensification of substorm activity during a weak storm on the electron flux dynamics has been studied for the first time. The energy spectra and time variations in the electron flux dynamics before and after a weak storm have been described based on analytical solutions to the kinetic equation for the electron distribution function with regard to the stochastic acceleration and loss rates. It has been established that there were different acceleration and loss rates before and after the weak storm of April 9–10, 2000.  相似文献   

Strong historical earthquakes in the northwestern Issyk Kul’ basin (northern Tien Shan)     

A.M. Korjenkov  S.V. Abdieva  A.B. Dzhumabaeva  A.B. Fortuna  E. Mamyrov  E.A. Morozova  L.A. Orlova  P.S. Vakhrameeva 《Russian Geology and Geophysics》2011,52(9):1007-1015

The northern Tien Shan is the northern front of the Himalayan mountain belt, which resulted from the collision between the Indian and Eurasian Plates. This region encompasses the most active seismic zones of the orogen, which generated the strongest (M > 8) earthquakes. Since there are scarcely any written accounts, the only way to trace back strong earthquakes is the paleoseismologic method. Since 1984 we have been studying the northwestern Issyk Kul’ basin, where there are differently directed anticlines, which constitute the Kungei meganticline. Here, several active tectonic structures (faults, folds) are located, whose development was accompanied by strong earthquakes. Our field studies of 2008 in the Iiri-Taldybulak Valley, along the adyrs (foothills) of the Kungei-Ala-Too Range, revealed two unknown historical earthquakes. The first one, which occurred along the southern rupture in the late 7th century A.D., gave rise to a seismic scarp; the latter broke through the river floodplain and a tash-koro (ancient settlement). The second one, which occurred along the northern rupture in the late 9th century A.D., increased the height of the seismic scarp, existing on the Early Holocene and older terraces. Note that this region already records a strong seismic event around 500 A.D. Archeologic data have revealed one more strong earthquake, which took place in the 14th century A.D. Note that the above-mentioned strong seismic events are coeval with the decline of the nomadic cultures (Wusun, Turkic, Mogul) in the northern Tien Shan and Zhetysu (Semirech’e).  相似文献   

Indications of late medieval earthquakes in the Talas-Fergana Fault Zone,Tien Shan     

A. M. Korjenkov  S. V. Abdieva  V. S. Burtman  L. A. Orlova  D. Rust  A. Tibaldi 《Geotectonics》2013,47(6):485-494

A paleoseismological study in the Talas-Fergana Fault Zone of the Tien Shan was accompanied by age determination of ancient seismic events. The calibrated radiocarbon datings of recent and buried soils allowed us to recognize the fault segments reactivated during strong earthquakes that occurred in the 14th- 16th centuries A.D. The magnitude of the paleoseismological event in the 16th century was no lower than 7.0 and no lower than IX in seismic intensity.  相似文献   

Manganese content in stars of the galactic thick and thin disks     

T. I. Gorbaneva  T. V. Mishenina  L. F. Orlova 《Bulletin of the Crimean Astrophysical Observatory》2013,109(1):38-40

The manganese content was determined in the atmospheres of 50 F, G, and K dwarfs (?1.0 < [Fe/H] < 0.2) that belong to the galactic thick and thin disks. The observation data were obtained with ELODIE and SOPHIE echelle spectrometers with resolutions of R = 42000 and R = 75000, respectively, using the 1.93-meter telescope of the Haute Provence Observatory. The Mn content was determined under the LTE approximation by the synthetic spectrum approach with a detailed consideration of the superfine structure. The behavior of the Mn content with [Fe/H] in the galactic substructures was analyzed.  相似文献   

Topology of currents in the high-latitude magnetosphere and magnetospheric response to variations in solar wind parameters     

E. E. Antonova  I. P. Kirpichev  I. L. Ovchinnikov  K. G. Orlova  S. S. Rossolenko 《Geomagnetism and Aeronomy》2009,49(8):1172-1175

We consider a number of new approaches that arise when the topology of currents in the high-latitude magnetosphere is investigated. We note that the high correlation between magnetospheric processes and solar wind parameters is a well-known feature of the magnetospheric dynamics. The proposed explanations of the observed dependences run into difficulties related to the high level of observed turbulence in the magnetosheath and inside the magnetosphere. The topology of the high-latitude magnetosphere in the transition region from dipole magnetic field lines to those extending into the tail is also poorly known. We consider the topology of transverse magnetospheric currents using satellite measurements of the plasma pressure distribution. The currents of the nearest plasma sheet are shown to be closed inside the magnetosphere. The generation of field-aligned currents in Iijima and Potemra region currents 1 and large-scale magnetospheric convection are discussed.  相似文献   

Dynamics of mammoth (<Emphasis Type="Italic">Mammuthus primigenius</Emphasis> Blum.) populations of Asia and North America and its correlation with climatic changes in the Late Neopleistocene (45 000–9700 years BP)     

Ya. V. Kuzmin  L. A. Orlova  V. N. Dementiev 《Doklady Earth Sciences》2008,421(2):978-982

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Deep penetration of projectile material into the planet during the impact     

T. I. Orlova  V. V. Svetsov 《Earth, Moon, and Planets》1995,71(3):255-263

A mechanism through which water could be buried inside the Moon is found. If an icy comet strikes the planetary surface and a thin natural crack exists at the site of the impact, some amount of cometary material can penetrate deep into the ground. This happens due to peculiar features of hydrodynamic flow along the crack. Numerical simulations based on the free-Lagrangian method show that the amount of water buried under the crater is several percent of the original mass of the projectile.  相似文献   

Food supply and feeding of capelin (Mallotus villosus) of different size in the central latitudinal zone of the Barents Sea during intermediate and warm years     

Orlova  E. L.; Ushakov  N. G.; Nesterova  V. N.; Boitsov  V. D. 《ICES Journal of Marine Science》2002,59(5):968-975

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Definition of the Pechora basin geographical and hydrological characteristics using GIS technology     

E. V. Orlova 《Russian Meteorology and Hydrology》2008,33(4):253-258

This paper describes approaches to hydrological calculations using GIS technology by an example of the Pechora basin. A digital model of the river basin is applied to automatically outline watersheds of the river and its tributaries and to determine the areas and coordinates of the centers of drainage basins of hydrological posts. Original hydrological data are interpolated and hydrological characteristics are calculated. The calculated values are compared with the earlier published data obtained by traditional methods.  相似文献