Výsledky vyhledávání - "O. S. Yakovchouk"

Particle precipitation: How the spectrum fit impacts atmospheric chemistry

Autor: J. M. Wissing, Holger Nieder, Miriam Sinnhuber, O. S. Yakovchouk

Publikováno v: Journal of Atmospheric and Solar-Terrestrial Physics. 149:191-206

Particle precipitation causes atmospheric ionization. Modeled ionization rates are widely used in atmospheric chemistry/climate simulations of the upper atmosphere. As ionization rates are based on particle measurements some assumptions concerning th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5ab6b19ac072b636bb338ac4851483b1
https://doi.org/10.1016/j.jastp.2016.04.007

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Solar proton events in solar activity cycles 21–24

Autor: Yu. I. Logachev, E. I. Daibog, O. S. Yakovchouk, Leonid Lazutin, V. N. Ishkov, G. M. Surova, I. E. Petrenko, G. A. Bazilevskaya, Leonty I. Miroshnichenko, E. V. Vashenyuk, M. N. Nazarova

Publikováno v: Bulletin of the Russian Academy of Sciences: Physics. 79:573-576

It is shown that the number of solar proton events (SPEs) with proton energies (E) higher than 10 and 100 MeV in the current solar cycle (cycle 24) differs slightly from the number of the same events in earlier cycles (cycles 21–23), even though so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e331aaebaf9bf62d03b695d252fb69f8
https://doi.org/10.3103/s1062873815050135

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A comparison of proton activity in cycles 20–23

Autor: M. N. Nazarova, G. A. Bazilevskaya, Yu. I. Logachev, V. N. Ishkov, Leonid Lazutin, O. S. Yakovchouk, Leonty I. Miroshnichenko, E. I. Daibog, E. V. Vashenyuk, I. E. Petrenko, A. G. Stupishin, G. M. Surova

Publikováno v: Geomagnetism and Aeronomy. 55:277-286

The solar proton singularities in cycles 20–23 were compared. For such a comparison, it is of special importance to present information about solar proton events (SPEs) uniformly. The Katalog working group, including representatives of different in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d39b3dcbd51ef6647c470bc079814b78
https://doi.org/10.1134/s0016793215030135

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Influence of heliospheric and geomagnetic activity on the dynamics of the relativistic electron fluxes in the Earth’s outer radiation belt around the minimum of the solar activity in 2008–2010

Autor: Igor Veselovsky, O. S. Yakovchouk, Yu. S. Shugay, Irina Myagkova

Publikováno v: Geomagnetism and Aeronomy. 54:558-567

The relativistic electron flux in the Earth’s outer radiation belt generally decreased by almost three orders of magnitude during the minimum of cycle 23 in 2009. Such a behavior was possibly caused by very low geomagnetic activity during an extrem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e4e532dc4c95b7cd371892cd43cb11d2
https://doi.org/10.1134/s001679321405017x

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Comparative analysis of recurrent high-speed solar wind streams influence on the radiation environment of near-earth space in April–July 20101

Autor: Irina Myagkova, O. S. Yakovchouk, Igor Veselovsky, Yu. S. Shugay

Publikováno v: Solar System Research. 47:127-140

This paper analyzes variations of flux of relativistic and subrelativistic electrons in the outer radiation belt of the Earth caused by the arrival of recurrent high-speed streams of solar wind during three consecutive solar rotations. The period fro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fde731b1fb4ac1ff0c92c72a4a4fe584
https://doi.org/10.1134/s0038094613020068

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Dynamics of the energy spectra of solar proton events observed in solar cycle 23

Autor: Irina Myagkova, O. S. Yakovchouk, Igor Veselovsky

Publikováno v: Solar System Research. 46:220-242

The proton energy spectra I(E, t) as functions of time were obtained and analyzed in the energy range of a few tens of MeV on the basis of GOES observations of proton enhancements during solar cycle 23. The energy spectra were approximated by power-l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::630d9a06fc9ed2152bfc0090850a6dcb
https://doi.org/10.1134/s0038094612030033

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Does sunspot number calibration by the 'magnetic needle' make sense?

Autor: O. S. Yakovchouk, Ilya Usoskin, Kalevi Mursula

Publikováno v: Journal of Atmospheric and Solar-Terrestrial Physics. 71:1717-1726

It has been suggested recently that early sunspot numbers should be re-calibrated and significantly corrected using the observed daily range of the geomagnetic declination (so-called rY values). The suggested “correction” method makes an a priori

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00367781afbf731bf53ff4631081c790
https://doi.org/10.1016/j.jastp.2008.04.017

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Extremely strong geomagnetic storm of September 2–3, 1859, according to the archived data of observations at the Russian network

Autor: O. S. Yakovchouk, N. G. Ptitsyna, Igor Veselovsky, M. I. Tyasto

Publikováno v: Geomagnetism and Aeronomy. 49:153-162

A retrospective analysis of the Russian magnetic observations of the Carrington event that occurred on September 2–3, 1859, has been performed. The conclusion has been made that this event was caused by the series of three recurrent eruptive solar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38a132105a31fa63cb36aa61601a7b4b
https://doi.org/10.1134/s0016793209020030

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