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Duration of Polar Activity Cycles and Their Relation to Sunspot Activity

✍ Scribed by V.I. Makarov; A.G. Tlatov; K.R. Sivaraman


Book ID
111538273
Publisher
Springer
Year
2003
Tongue
English
Weight
123 KB
Volume
214
Category
Article
ISSN
0038-0938

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The correlation between the size of polar coronal holes and sunspot numbers has been investigated for the last five solar cycles. The area of polar coronal holes over the period from 1939 to 1993 was derived from ground-based observations of the green coronal line at 530.3 nm (Fe xxv). Correlation a