Publication
Title
Long-term changes of polar activity of the Sun
Author
Abstract
We discuss long-time changes of polar activity of the Sun using the new observational data sets in the optical range during 1872-2001. A study of the secular and cycle variations of the magnetic activity at the high-latitude regions is the main goal that includes polar magnetic field reversals during 1872-2001 and secular changes of the duration of polar activity cycles. The secular increase of the area of polar zones during the minimum activity in the last 120 years and as consequence a decrease of coronal temperature of the Sun in the high-latitude zones during the last 50 years. Correlation between the polar cycles of CaII-K bright points with the Wolf sunspot numbers cycles, W(t), and the 22-year polar magnetic cycles of CaII-K bright points at the high latitudes during 1905-1995 is discussed.
Language
English
Source (journal)
Solar physics. - Dordrecht
Source (book)
1st International Symposium on Space Climate, JUN 20-23, 2004, Oulu, FINLAND
Publication
Dordrecht : Springer, 2004
ISSN
0038-0938
Volume/pages
224:1(2004), p. 49-59
ISI
000228849200005
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
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 09.09.2017
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