Active longitudes: Structure, dynamics, and rotation
作者： E.V. Ivanov
DOI: 10.1016/J.ASR.2007.02.093
关键词: Correlation analysis 、 Longitude 、 Reference frame 、 Sunspot 、 Meteorology 、 Geology 、 Geodesy 、 Rotation 、 Antipodal point 、 Equator
摘要: Abstract Greenwich data for 1879–2005 (cycles 12–23) are used to study the longitude distribution of sunspot group areas summed over a Carrington rotation s (CR) separately in southern and northern hemispheres. The zones active longitudes (AL) identified, their behaviour (location, shift, intensity variations) is analyzed time interval under consideration. In particular, we have studied two reference frames corresponding periods T = 27.2753 = 27.00 days. AL shown consist set individual narrow formation rotating rigidly with period ∼ 27.2753 days. lifetime exceeds significantly that sunspots may reach 15–20 rotations. Besides revealed migrate frame at different (greater smaller than Carrington) angular velocities. Quasi-biennial oscillations (QBO) total longitudinal sectors 1879–2004 using spectral correlation analysis methods. relationships between antipodal, symmetric about equator, adjoining analyzed.
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