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Examination of the solar cycle variation of foF2 by using solar flare index for the cycle 21
Date
1998-01-01
Author
Ozguc, A
Tulunay, Yurdanur
Atac, T
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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For solar cycle 21 (1976 - 1986) the variation of monthly mean values of noon-time foF2 at Slough, Rome, and Manila are examined by using solar flare index and geomagnetic Ap index. A single regression analysis for dependence of foF2 on solar flare index shows better matching: Moreover, less hysteresis effect is seen when we use solar flare index instead of other solar indices. Thus, for making prediction, one needs to take into account just the solar flare index and not the solar flare index and geomagnetic Ap index simultaneously. (C) 1998 COSPAR, Published by Elsevier Science Ltd. All rights reserved.
URI
https://hdl.handle.net/11511/51510
Journal
SOLAR-TERRESTRIAL RELATIONS: PREDICTING THE EFFECTS ON THE NEAR- EARTH ENVIRONMENT
DOI
https://doi.org/10.1016/s0273-1177(97)01114-9
Collections
Graduate School of Natural and Applied Sciences, Article