Forecasting geomagnetic activity |
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| Authors: | R P Kane |
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| Institution: | (1) Instituto de Pesquisas Espaciais-INPE, C.P. 515, 12201 São José dos Campos, SP, Brasil |
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| Abstract: | A study of the daily, monthly and annual values of the geomagnetic activity indexAp for 1932 onwards and of the annualaa indices for 1868 onwards indicated that their variations had large random components. Long-term predictions were not possible from time-series extrapolations. |
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| Keywords: | geomagnetic activity Ap indices aa indices |
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