Jagath Kumar, V. R. ; Sanyasi Raju, P. T. ; Ramachandra Rao, B. (1967) Relation between magnetic activity and spread-F at Kodaikanal Journal of Atmospheric and Terrestrial Physics, 29 (12). pp. 1669-1672. ISSN 0021-9169
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002191...
Related URL: http://dx.doi.org/10.1016/0021-9169(67)90124-9
Abstract
The correlation between night time values of spread-F indices, magnetic K-indices and h'maxF values for Kodaikanal are examined for a half solar cycle. Cross correlograms for spread-F indices and magnetic K-indices show that the variations of occurrence of spread-F echoes lag behind the variations of K-index by a period varying from zero in the sunspot maximum period to 5 days in the sunspot minimum period. A similar effect is observed between h'maxF variations and K-index variations but with lesser delay. A strong positive correlation is observed between spread-F indices and h'maxF values without any time lag throughout the half solar cycle.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 33024 |
| Deposited On: | 21 Mar 2011 13:44 |
| Last Modified: | 10 Jun 2011 04:30 |
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