The green corona data: 1947-1976, revisited

Storini, M. and Sykora, J. (1997) The green corona data: 1947-1976, revisited. Il nuovo cimento C, 20 C (6). pp. 923-932. ISSN 1826-9885

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Re-examining a continuous monthly data set for the green-line corona brightness, covering February 1947 to September 1976, we have found that practically no delay exists between the trends of the green-line coronal intensity in the equatorial and middle-latitude belts at the beginning of solar activity cycle No. 20, while a previous cycle (No. 19) shows a sudden increase in the corona intensity brightness at middle latitudes followed by a delayed one at the equatorial belts, supporting recent findings on even-odd solar cycle differences observed in the half-yearly green corona database (1943-1993). The north-south asymmetry in the hemispheric solar activity is not involved in this phenomenon.

Item Type: Article
Additional Information: Paper presented at the VII Cosmic Physics National Conference, Rimini, October 26-28, 1994.
Uncontrolled Keywords: Corona; coronal loops, streamers, and holes; conference proceedings
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 09 Feb 2018 10:38
Last Modified: 09 Feb 2018 10:38

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