Продолжая использовать данный сайт, Вы даете согласие на обработку файлов cookie, пользовательских данных (сведения о местоположении; тип и версия ОС; тип и версия браузера; тип устройства и разрешение его экрана; источник откуда пользователь перешел на сайт; с какого сайта или по какой рекламе; язык ОС и браузера; какие страницы открывает и на какие кнопки нажимает пользователь; IP-адрес) в целях функционирования сайта и проведения статистических исследований и обзоров. Если вы не хотите, чтобы Ваши данные обрабатывались, Вы должны покинуть данный сайт.
Документы 21 - 30 из 49
По заглавию По автору По году издания
21.
Обложка
Авторы:
Solovyev Stepan Ivanovich, Boroyev Roman Nikolaevich, Moiseyev Aleksey Vladimirovich, Du A., Yumoto Kiyohumi
Заглавие: Evolution of geomagnetic perturbations and aurora dynamics during the strong magnetic storms events

Количество страниц: 4 с.

Evolution of geomagnetic perturbations and aurora dynamics during the strong magnetic storms events / S. I. Solovyev, R. N. Boroev, A. V. Moiseyev, A. Du, K. Yumoto // Physics of auroral phenomena : proceedings of the 32nd annual seminar, Apatity, 3 – 6 March 2009. – 2010. – P. 41-44.

Подробнее
22.
Обложка
Авторы:
Makarov George Afanasyevich, Baishev Dmitriy Gavrilievich, Moiseyev Aleksey Vladimirovich, Solovyev Stepan Ivanovich, Pilipenko V. A., Engebretson Mark, Yumoto Kiyohumi
Заглавие: High-latitude peculiarities of the geomagnetic SI impulse propagation meridional velocity during sharp decrease of solar wind density

Количество страниц: 4 с.

The geomagnetic manifestation of sudden impulse (SI) caused by a sharp decrease of the solar wind dynamic pressure due to the plasma density reduction is considered. The observational data of the magnetometer world network have been analysed. The propagation velocities of the SI signal in the meridional direction by using data of the horizontal component of geomagnetic field in the high-latitude region have been calculated. It is found that at a sharp decrease of the solar wind density the meridional propagation of the SI signal is in the northern direction. In this case, on the day side the propagation velocity is constant but there is a tendency of its increasing in the MLT morning sector. It has been established that the meridional propagation velocity of the SI signal at a sharp decrease of the solar wind density depends on the geomagnetic latitude, i.e. with the rise of latitude the velocity in the auroral zone decreases and in the polar cap it increases.

High-latitude peculiarities of the geomagnetic SI impulse propagation meridional velocity during sharp decrease of solar wind density / G. A. Makarov, D. G. Baishev, A. V. Moiseyev, S. I. Solovyev, V. A. Pilipenko, M. J. Engebretson, K. Yumoto // Proceedings of the Fifth International Conference on Substorms : 16-20 May 2000 Congress Centre of the Arctic and Antarctic Research Institute, St. Petersburg, Russia. − Noordwijk, Netherlands : European Space Agency, 2000. − P. 523-526.

Подробнее
23.
Обложка
Авторы:
Solovyev Stepan Ivanovich, Boroyev Roman Nikolaevich, Moiseyev Aleksey Vladimirovich, Du A., Yumoto Kiyohumi
Заглавие: Dependence of High-Latitude and Low-Latitude Geomagnetic Disturbances on Solar Wind Parameters during the Magnetic Storm of November 7-8, 2004

Количество страниц: 4 с.

By global geomagnetic observation data the variations of intensity and dynamics of auroral electrojets, low-latitude disturbances at latitudes ~10-55°, SYM-H and studied. It is shown that positive values of SYM-H and Dst or the decrease of their negative values correspond to the growth period of Pd. The enhancement of magnetic field depression at latitudes Ф'~10-30° with the maximum ∆H in the evening sector is observed at negative values of IMF Bz and is accompanied by the enhancement of auroral electrojets in all temporal sectors and their southward shift. The maximum values of Dst ~-400 nT correspondent to the most intensity of western (eastern) electrojet in the midnight (evening) sector with a current center at the lowest latitudes. The possible sources of Dst and SYM-H variations are discussed.

Dependence of High-Latitude and Low-Latitude Geomagnetic Disturbances on Solar Wind Parameters during the Magnetic Storm of November 7-8, 2004 / S. I. Solovyev, R. N. Boroyev, A. V. Moiseyev, A. Du, K. Yumoto // Solar Extreme Events Fundamental Science and Applied Aspects Nor-Amberd, Armenia 26-30 September 2005 : proceedings of the Second International Symposium / edited by A. Chilingarian and G. Karapetyan. − Erevan : Cosmic Ray Division, Alikhanyan Physics Institute, 2006. − P. 104-106.

Подробнее
24.
Обложка
Авторы:
Moiseyev Aleksey Vladimirovich, Solovyev Stepan Ivanovich, Yumoto Kiyohumi, Engebretson Mark
Заглавие: Characteristics of negative sudden geomagnetic impulses: Comparison with the sudden geomagnetic impulse caused by the growth of the solar wind dynamic pressure

Количество страниц: 2 с.

Characteristics of negative sudden geomagnetic impulses: Comparison with the sudden geomagnetic impulse caused by the growth of the solar wind dynamic pressure : [тезисы докладов] / A. V. Moiseyev, S. I. Solovyev, K. Yumoto, M. Engebretson // Physics of auroral phenomena : 30th annual seminar, 27 February – 2 March 2007 : abstracts. – 2007. – P. 34-35.

Подробнее
25.
Обложка
Авторы:
Moiseyev Aleksey Vladimirovich, Solovyev Stepan Ivanovich, Engebretson Mark, Yumoto Kiyohumi
Заглавие: Dependence of distribution of the sudden impulse ionospheric currents on IMF orientation during growth periods of the solar wind dynamic pressure

Количество страниц: 2 с.

Dependence of distribution of the sudden impulse ionospheric currents on IMF orientation during growth periods of the solar wind dynamic pressure : [тезисы докладов] / A. V. Moiseyev, S. I. Solovyev, K. Yumoto, M. Engebretson // Physics of auroral phenomena : 26th annual seminar, 25-28 February 2003 : abstacts. – 2003. – P. 24.

Подробнее
26.
Обложка
Авторы:
Solovyev Stepan Ivanovich, Boroyev Roman Nikolaevich, Moiseyev Aleksey Vladimirovich
Заглавие: On the relation between the SYM-H and Dst- indices during the development of magnetic storm

Количество страниц: 4 с.

The Dst-index obtained by hourly average values of the magnetic field at four stations located in various longitudinal sectors at latitudes Φ′≈20-30° is the index of magnetic field depression at low latitudes during the magnetic storm periods. Recently for the characteristics of magnetic field depression the SYM-H index has been used. It is obtained from 1 min data of the magnetic field at ~10 stations, located mainly at latitudes Φ′≈40-50° [1]. It is considered in [2-4] that the SYM-H index is an analog of Dst but with a better temporal resolution. As shown in [5], during super magnetic storms with Dst variation ≥ 400 nT, the SYM-H variations can considerably differ from Dst behavior and thus the SYM-H index is not always an analog of Dst. In this paper the relation between the Dst and SYM-H variations for magnetic storms of different intensity, with Dst varying from ~ -50 nT to -450 nT is investigated.

Solovyev, S. I. On the relation between the SYM-H and Dst- indices during the development of magnetic storm / S. I. Solovyev, R. N. Boroyev, A. V. Moiseyev // Physics of auroral phenomena : proceedings of the 28 th annual seminar, 1-4 March 2005. – 2005. – P. 48-51.

Подробнее
27.
Обложка
Авторы:
Khalipov Victor Lavrentievich, Galperin Yury Ilyich, Stepanov Alexander Egorovich, Bondar Elena Dmitrievna
Заглавие: Formation of polarization jet during injection of ions into the inner magnetosphere

Количество страниц: 4 с.

Long-lasting ground based measurements of a polarization jet (PJ) by the latitudinal chain of ionospheric stations in Yakutia (3 < L < 5; MLT = UT + 9 h) and by 5 subauroral Russian stations were analyzed. A number of cases were found when PJ was recorded simultaneously with energetic ion observations by AMPTE/CCE and INTERBALL 2. The data comparison shows that at least in the considered cases of strong magnetic substorms, PJ was accompanied by strong injection of ions with the energy of ~20-50 keV and intensity of ~10 cm-² c-¹ sr-¹keV-¹. Close to the injection region in the near midnight sector no ion dispersion was observed, but in the evening sector nose events were detected. In accordance with the mechanism suggested by Southwood and Wolf (JGR, 1978, 83, 5227) PJ was observed near the equatorial boundary of energetic ion penetration into the magnetosphere. Measurements by ionosonds at different longitudes show that the westward velocity of the frontt of PJ development is close to the gradient drift velocity of 20 keV ions (forming nose events). Thus, the physical mechanism of PJ formation due to energetic ion injection during a strong substorm burst is experimentally confirmed. Satellite measurements show that in the near midnight sector energetic ions reach the shell L=3.0 in 20-30 minutes after a substorm commencement with AE>500 nT.

Formation of polarization jet during injection of ions into the inner magnetosphere / V. L. Khalipov, Yu. I. Galperin, A. E. Stepanov, E. D. Bondar // Physics of auroral phenomena : proceedings of the 25th annual seminar, Apatity, 26 February – 1 March 2002. – 2002. – P. 43-46.
DOI: 10.1016/S0273-1177(03)00016-4

Подробнее
28.
Обложка
Авторы:
Skryabin Nikolay Georgievich, Samsonov Sergey Nikolaevich, Plotnikov Igor Yakovlevich
Заглавие: Influence of Jupiter on cosmic ray intensity variations

Количество страниц: 4 с.

Galactic cosmic ray (GCR) diffusion in interplanetary space depends in a certain way on the degree of regularity of the interplanetary magnetic field (IMF). The sector IMF structure is manifested in inhomogeneous GCR distribution in the heliosphere. In parallel with the usual sectors associated with solar activity, one should take into account the sectors, which are caused by the Jupiter activity. It is known that the Jupiter is a powerful regular source of high-energy electrons (0.2-40 MeV), the density of which, on the average, is many times higher than that of solar cosmic rays. The high-energy electrons are systematically registed with the 399-day period in the near-Earth space. According to estimations of the particle energy density their flux is sufficient to decrease the magnetic field in the Jovian sector and can due to corresponding large-scale inhomogeneity in the GKL distribution. Hereby, we present the evidences that the GCR diffusion is noticeably stronger in the sector where there are Jovian electrons. By data on periodic passage of those sectors near the Earth, we have treated neutron monitor data using the superposed epoch technique. The day of the Earth and Jupiter opposition is taken as a zero epoch. At large statistical data (9925 days) it is found that the GCR intensity in that period increases with an amplitude near 1%. The groud effect is manifested with the period of 399 days and its maximum time is in a certain way shifted relative to the planet opposite moment.

Skryabin, N. G. Influence of Jupiter on cosmic ray intensity variations / N. G. Skryabin, S. N. Samsonov, I. Ya. Plotnikov // Physics of auroral phenomena : proceedings of the 25th annual seminar, Apatity, 26 February – 1 March 2002. – 2002. – P. 137-139.

Подробнее
29.
Обложка
Авторы:
Baishev Dmitriy Gavrilievich, Velichko Vitaly Andreevich, Antonova Elizaveta Evgenievna, Gromova Lyudmila Ivanovna, Stepanova Marina Vladimirovna, Kovrazhkin Rostislav Alekseevich, Bosqued Jean-Michel
Заглавие: Splitting of auroral electrojets: ground-based and satellite data

Количество страниц: 3 с.

Splitting of auroral electrojets: ground-based and satellite data / D. G. Baishev, V. A. Velichko, E. E. Antonova, L. I. Gromova, M. V. Stepanova, R. A. Kovrazhkin, J. M. Bosqued // Physics of auroral phenomena : proceedings of the 26th annual seminar, 25 - 28 February 2003. – 2003. – P. 9-11.

Подробнее
30.
Обложка
Авторы:
Sokolov Vasiliy Dmitrievich, Danilov A. A., Samsonov Sergey Nikolaevich
Заглавие: Dependence of semi-diurnal variation of auroral absorption on a geomagnetic disturbance

Количество страниц: 4 с.

From data of riometer observations from 1986 to 1993 at stations of Kotelny Island, Tixie Bay and Zhigansk the semi-diurnal variations of occurrence frequency of auroral absorption and their dependence on geomagnetic activity have been determined. It has been found that the phase of semi-diurnal variation maximum is systematically shifted to earlier hours with the rise of geomagnetic disturbance. The reason of this experimental fact is discussed.

Sokolov, V. D. Dependence of semi-diurnal variation of auroral absorption on a geomagnetic disturbance / V. D. Sokolov, A. A. Danilov, S. N. Samsonov // Physics of auroral phenomena : proceedings of the 26th annual seminar, 25 - 28 February 2003. – 2003. – P. 91-94.

Подробнее