Study of Geoelectrical Responses to Space Weather Anomalies: Auroral Latitudes,Yenisei-Khatanga Regional Trough     

Sokolova  E. Yu.  Marshalko  E. E.  Kozyreva  O. V.  Kupriyanov  I. S.  Epishkin  D. V.  Pilipenko  V. A.  Slinchuk  G. E.  Yakovlev  D. V.  Yakovlev  A. G. 《Izvestiya Physics of the Solid Earth》2022,58(5):670-689

Izvestiya, Physics of the Solid Earth - Abstract—The paper presents the results of analysis of the geoelectric (telluric) field variability during the Earth’s magnetic field...  相似文献   

Variations in the near-ground electric field at high latitudes and the potential drop across the polar cap during morning polar substorms     

N. G. Kleimenova  O. V. Kozyreva  M. Kubicki  S. Michnowski 《Geomagnetism and Aeronomy》2011,51(3):394-401

This paper studies time variations in the near-ground atmospheric electric field (Ez) at the geomagnetic latitude of 74° (Hornsund observatory) during polar substorms. Ez variations are compared with those in the potential drop across the polar cap (Up), according to SuperDARN radar observations. It is found that in the morning sector, time variations in Ez are strongly driven by time variations in the electrojet and almost do not depend on time variations in Up, which is presumably due to the penetration of the electric field of the electrojet into tropospheric altitudes.  相似文献   

The Cyclical Structure of the Isotopic Diagram of a Lithalsa and Its Radiocarbon Age,Sentsa River Valley,Eastern Sayan     

Vasil’chuk  Yu. K.  Vasil’chuk  J. Yu.  Alexeyev  S. V.  Budantseva  N. A.  Alexeyeva  L. P.  Vasil’chuk  A. C.  Kozyreva  Ye. A.  Svetlakov  A. A. 《Doklady Earth Sciences》2019,489(2):1456-1460

Doklady Earth Sciences - This paper reports on the nature and history of the mineral-rich frost heave mounds—lithalsas—developed on the first terrace of the Sentsa River in Okinsky...  相似文献   

Morning polar substorms and variations in the atmospheric electric field     

N. G. Kleimenova  O. V. Kozyreva  M. Kubicki  S. Michnowski 《Geomagnetism and Aeronomy》2010,50(1):48-57

The effects of morning magnetospheric substorms in the variations in near-Earth atmospheric electricity according to the observations of the electric field vertical component (E _z ), at Hornsund polar observatory (Spitsbergen). The E _z, data, obtained under the conditions of fair weather (i.e., in the absence of a strong wind, precipitation, and fog), are analyzed. An analysis of the observations indicated that the development of a magnetospheric substorm in the Earth’s morning sector is as a rule accompanied by positive deviations in E _z, independently of the Hornsund location: in the polar cap or at its boundary. In all considered events, Hornsund was located near the center of the morning convection vortex. In the evening sector, when Hornsund fell in the region of evening convection vortex, the development of a geomagnetic substorm was accompanied by negative deviations in E _z., It has been concluded that the variations in the atmospheric electric field E _z), at polar latitudes, observed during the development of magnetospheric substorms, result from the penetration of electric fields of polar ionospheric convection (which are intensified during a substorm) to the Earth’s surface.  相似文献   

Photometric light curves and physical paramters of the eclipsing binary systems IT Cas,CO Cep,AI Hya with possible apsidal motions     

Kh. F. Khaliullin  V. S. Kozyreva 《Astrophysics and Space Science》1989,155(1):53-69

Multi-colourWBVR photoelectric observations of the eclipsing binaries IT Cas, CO Cep, and AI Hya were carried out. The photometric elements and the absolute parameters of the orbits and components were obtained. The valuation of the angular rate of the apsidal motion of AI Hya based on the comparison of our observations with the previous photoelectric light curve of this system was derived.  相似文献   

ELF polar chorus and magnetic storms     

N. G. Kleimenova  O. V. Kozyreva 《Geomagnetism and Aeronomy》2007,47(3):336-342

The data of continuous observations of ELF emissions (polar chorus) at South Pole Antarctic observatory (Φ = ?74.02°) for 1997–1999 and during the superstrong magnetic storms of October and November 2003 are analyzed. It has been established that an increase in polar chorus is as a rule observed during the initial and recovery phases of a magnetic storm at positive values of the IMF vertical component (IMF B _z > 0). Under such conditions, South Pole is located in the region of closed field lines. It has been found that the generation of polar chorus at South Pole abruptly ceases during the storm main phase after the IMF B _z southward turning and beginning of an intense substorm in the nightside auroral zone, probably, because this observatory appears in the region of projection of the open magnetosphere due to the expansion of the polar cap.  相似文献   

The eclipsing binary system with an eccentric orbit V1176 Cas=GSC 4513 2537     

V. S. Kozyreva  A. V. Kusakin  T. Krajci  J. Menke  G. V. Komissarova 《Astrophysics》2013,56(1):19-25

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Apsidal motion in the eclipsing binary system V 451 Ophiuchi     

Kh. F. Khaliullin  V. S. Kozyreva 《Astrophysics and Space Science》1984,106(1):93-101

MulticolourWBVR photoelectric observations of the eclipsing binary V 451 Oph were carried out, and a highly accurate light curve was obtained. The angular velocity of the orbital rotation, =2.1 deg yr^–1, and the apsidal motion constantk ₂=0.0045 are given.  相似文献   

Two genetic types of sericitolites in the near-Polar Urals     

I. V. Kozyreva  I. V. Shvetsova  Ya. E. Yudovich 《Doklady Earth Sciences》2007,413(2):354-357

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Unusual spatial-temporal dynamics of geomagnetic disturbances during the main phase of the extremely strong magnetic storm of November 7–8, 2004     

O. V. Kozyreva  N. G. Kleimenova  T. A. Kornilova  K. Kauriste  J. Manninen  A. Ranta 《Geomagnetism and Aeronomy》2006,46(5):580-592

The spatial dynamics of geomagnetic variations and pulsations, auroras, and riometer absorption during the development of the main phase of the extremely strong magnetic storm of November 7–8, 2004, has been studied. It has been indicated that intense disturbances were observed in the early morning sector of auroral latitudes rather than in the nighttime sector, as usually takes place during magnetic storms. The unusual spatial dynamics was revealed at the beginning of the storm main phase. A rapid poleward expansion of disturbances from geomagnetic latitudes of 65°–66° to 74°–75° and the development of the so-called polar cap substorm with a negative bay amplitude of up to 2500 nT, accompanied by precipitation of energetic electrons (riometer absorption) and generation of Pi2–Pi3 pulsations, were observed when IMF B _z was about ?45 nT. The geomagnetic activity maximum subsequently sharply shifted equatorward to 60°–61°. The spatial dynamics of the westward electrojet, Pi2–Pi3 geomagnetic pulsations, and riometer absorption was similar, which can indicate that the source of these phenomena is common.  相似文献