Документы 71 - 80 из 113
71.

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.

72.

Количество страниц: 2 с.

Evidence of the Psi geomagnetic pulsations burst excitation as the direct response to the solar wind pressure pulses : [тезисы докладов] / S. I. Solovyev, A. V. Moiseyev, D. G. Baishev, K. Yumoto, M. Engebretson // Physics of auroral phenomena : 24 annual seminar, 27 February - 2 March 2001. – 2001. – P. 48.

73.

Количество страниц: 1 с.

Sources of excitation and damping of PC5 geomagnetic pulsations during the magnetic storms of october 29-31, 2003 influence of the solar wind and auroral electrojets : [тезисы докладов] / Solovyev S. I., Moiseyev A. V., Du A., Engebretson M., Newitt L. R. // International symposium on Solar Extreme Events of 2003 : programme and abstract book. – Москва : УНЦ ДО, 2004. – P. 59.

74.

Количество страниц: 2 с.

Evolution of ionospheric current systems for the geomagnetic impulse SI/SC by the magnetometer global network data : [тезисы докладов] / S. I. Solovyev, A. V. Moiseyev, M. Engebretson, K. Yumoto // Physics of auroral phenomena : 24 annual seminar, 27 February - 2 March 2001. – 2001. – P. 36.

75.

Количество страниц: 4 с.

Geomagnetic sudden impulse characteristics in dependence of the IMF orientation / S. I. Solovyev, A. V. Moiseyev, M. Engebretson, K. Yumoto, A. Du // Physics of auroral phenomena : proceedings of the 29th annual seminar, Apatity, 27 February – 3 March 2006. – 2007. – P. 116-119.

76.

Количество страниц: 1 с.

Sources of excitation and damping of PC5 geomagnetic pulsations during the magnetic storms of october 29-31, 2003 influence of the solar wind and auroral electrojets : [тезисы докладов] / Solovyev S. I., Moiseyev A. V., Mullayarov V. A., Du A., Engebretson M., Newitt L. R. // International symposium on Solar Extreme Events of 2003 : programme and abstract book. – Москва : УНЦ ДО, 2004. – P. 60.

77.

Количество страниц: 4 с.

Analysis of the global magnetosphere-ionosphere response to solar wind dynamic pressure variations under the negative IMF Bz has been performed. It is shown that an increase in the dynamic pressure leads to a double response of the ionospheric currents and aurora, i.e. simultaneously (within the accuracy of 1 min) and ~5-7 min afterward. Thereby, the eastward and westward convective electrojets are enhanced in the evening and morning sectors respectively, followed by the intensification of the westward current in the near midnight and evening sectors. The intensification of the electrojets is followed by extension of the diffuse precipitation zone and its high latitude boundary movement to the pole and to the east in the midnight-to-morning sector. In our case, no poleward or westward extension of aurora before midnight is observed. The disturbance triggered by a dynamic pressure increase may be considered as a convection disturbance associated with reconstruction of the DP2 current system.

Magnetosphere-ionosphere response to magnetosphere compression by the solar wind / S. I. Solovyev, A. V. Moiseyev, K. Yumoto, M. Engebretson // Physics of auroral phenomena : proceedings of the 26th annual seminar, 25 - 28 February 2003. – 2003. – P. 41-44.

78.

Количество страниц: 2 с.

Magnetospheric-ionospheric response to variations in the solar wind dynamic pressure during positive IMF Bz and a sharp change of IMF By direction : [тезисы докладов] / S. I. Solovyev, A. V. Moiseyev, K. Yumoto, M. Engebretson, A. Du // Physics of auroral phenomena : 29th annual seminar, 27 February – 3 March 2006 : abstracts. – 2006. – P. 36.

79.

Количество страниц: 4 с.

The character of geomagnetic and auroral response to solar wind dynamic pressure variation and the dynamics of particles injected into the magnetosphere / S. I. Solovyev, A. V. Moiseyev, K. Yumoto, M. Engebretson, A. Du // Physics of auroral phenomena : proceedings of the 29th annual seminar, Apatity, 27 February – 3 March 2006. – 2007. – P. 112-115.

80.

Количество страниц: 5 с.

В течение 2009-2016 гг. на территории с границами 40-80° N, 60-180° E проанализированы вариации грозовой активности, представленной количеством грозовых разрядов по данным Всемирной грозолокационной сети WWLLN. Выделены две области с повышенным уровнем грозовой активности: западный очаг (48-60° N и 60-90° E), восточный очаг (40-55° N и 110-140° E). Плотность грозовых разрядов в этих областях в 10-100 раз превышает плотность разрядов на окружающих территориях. Сравнение вариаций суточного количества грозовых разрядов и потока радиоизлучения Солнца на волне 10.7 см показало слабую линейную корреляцию между ними: коэффициент корреляции от -0.55 до 0.86 для западного региона и от -0.78 до 0.39 для восточного за все летние сезоны. На возрастающей ветви 24-го солнечного цикла происходит пространственное перераспределение количества грозовых разрядов между восточным и западным регионами высокой грозовой активности. В максимумах солнечного цикла и на его спадающей ветви перераспределения становятся не настолько ярко выраженными как во время возрастающей ветви.
We analyze variations of lightning activity presented by the lightning stroke number obtained by the World Wide Lightning Location Network (WWLLN) within the territory with boundaries 40-80° N and 60-180° E in 2009-2016. There are two regions with high lightning activity: western (48-60° N, 60-90° E) and eastern (40-55° N, 110-140° E). The lightning stroke density in these regions is 10-100 times higher than that in surrounding areas. The comparison between daily variations of lightning stroke number and the 10.7 cm solar radio flux shows no correlation: the linear correlation coefficient varied from -0.55 to 0.86 in the western region and from -0.78 to 0.39 in the eastern region during all summer seasons. During the ascending phase of solar cycle 24, there was a spatial lightning redistribution between the western and eastern regions of high lightning activity. During peaks of the solar cycle and its descending phase, the redistribution was not so pronounced as that during the ascending phase.

Tarabukina, L. D. Spatial and temporal distribution of lightning strokes over North Asia and its comparison with solar activity variations in 2009-2016 = Пространственно-временное распределение грозовых разрядов по территории северного региона Азии и его сравнение с солнечной активностью в 2009-2016 гг. / L. D. Tarabukina, V. I. Kozlov // Солнечно-земная физика = Solar-Terrestrial Physics. – 2017. – Т. 3, N 2 : 13-я российско-китайская конференция по космической погоде. – С. 70-74.
DOI: 10.12737/22602