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- W1207570855 abstract "The K index indicates the level of magnetic perturbation with respect to the normal diurnal variation. Usually K is taken manually from magnetograms, and the involved operations are consequently rather subjective. When data are available in digital form, it is possible to derive the K index automatically, using computer algorithms. This work applies a new combined technique based on both fractal and harmonic analyses. While the latter is often used in K determination, the former provides a substantially novel approach. One year (1989) of K observations at L'Aquila observatory has been used as a basis for comparison between hand and computer estimations of K. Agreements which have been found are comparable with those expected from two different operators" @default.
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- W1207570855 date "1992-08-01" @default.
- W1207570855 modified "2023-09-27" @default.
- W1207570855 title "Automatic K scaling by means of fractal and harmonic analysis" @default.
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