Publication
Title
Secular variation of 1.3-year latitude oscillations of magnetic zone boundaries during 1915-2000
Author
Abstract
We have computed and analyzed the average latitude per solar rotation of 36 zone boundaries of the large-scale magnetic field, which have been detected by Ha filaments and prominences during 1915-2000. We have found two types of the latitude oscillations of the zone boundaries with the quasi-periods of about 1.3 and 2.3-years (17 and 30 solar rotations). We consider that 1.3-year latitude periodicity of the filament bands connected with the same oscillations at the tachocline (Komm et al. (2000), Howe et al. (2001)). We have found the secular variation or an increase of a period of about 1.3-year oscillations from 1.1 year in 1915 up to 1.4 year in 2000. Second type of the latitude oscillations is about 2.3-year that concerns to quasi-biennial cycle. Properties of 1.3 and 2.3-year latitude oscillations of the filament bands during 1915-2000 are discussed.
Language
English
Source (journal)
Solar Variability: from core to outer frontiers, vols 1 & 2
Source (book)
10th European Solar Physics Meeting, SEP 09-14, 2002, PRAGUE, CZECH REPUBLIC
Publication
2002
ISBN
92-9092-816-6
Volume/pages
506(2002), p. 173-176
ISI
000181080400040
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 03.01.2013
Last edited 13.07.2017
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