Correlation study of six solar activity indices in the cycles 21 – 23

Авторы: Bruevich E.A., Yakunina G.V.
Сборник: Sun and Geoshere Труды Международной конференции Fifth Workshop Solar Influences on Magnetosphere, Ionosphere and Atmosphere. Nessebar, Bulgaria, 3-7 June 2013.,
Том: 8
Год издания: 2013
Первая страница: 83
Последняя страница: 90
Аннотация: The correlation coefficients of the linear regression of six solar indices versus 10.7 cm radio flux F10.7 were analyzed in solar cycles 21, 22 and 23. We also analyzed the interconnection between these indices and F10.7 with the help of second order polynomials approximation. The indices we've studied in this paper are: relative sunspot numbers - SSN, 530.3 nm coronal line flux – F530, the total solar irradiance - TSI, Mg II 280 nm core-to-wing ratio UV-index, Flare Index – FI, and Counts of flares. In most cases the regressions of these solar indices versus F10.7 are close to the linear regression except near the minima and maxima of the 11-year solar activity cycles. For the linear regressions we found that the minimum values of correlation coefficients Kcorr (t) for the solar indices versus F10.7 and SSN occur twice during the 11-year cycle.
Добавил в систему: Бруевич Елена Александровна

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