Temporal evolution of fractality in the Earth's magnetosphere and the solar photosphere
Author
dc.contributor.author
Domínguez, Macarena
Author
dc.contributor.author
Muñoz, Víctor
Author
dc.contributor.author
Valdivia Hepp, Juan
Admission date
dc.date.accessioned
2018-12-20T14:14:22Z
Available date
dc.date.available
2018-12-20T14:14:22Z
Publication date
dc.date.issued
2014
Cita de ítem
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Journal of Geophysical Research: Space Physics, Volumen 119, Issue 5, 2018, Pages 3585-3603
Identifier
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21699402
Identifier
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10.1002/2013JA019433
Identifier
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https://repositorio.uchile.cl/handle/2250/155114
Abstract
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The study of complexity in two aspects of the magnetic activity in the Sun-Earth system is presented. We compare the temporal evolution of the magnetic fluctuations in the Earth's magnetosphere and the spatial distribution of the magnetic field in the solar photosphere, by calculating fractal dimensions from the data. It is found that the fractal dimension of the Dst data decreases during magnetic storm states and is well correlated with other indexes of solar activity, such as the solar flare and coronal indexes. This correlation holds for individual storms, full-year data, and the complete 23rd solar cycle. The fractal dimension from solar magnetogram data also correlates well with both the Dst index and solar flare index, although the correlation is much more clear at the larger temporal scale of the 23rd solar cycle, showing a clear increase around solar maximum. Key Points Calculation of fractal dimension of Dst series and solar photosphere Evolution of fractal dimensions Correlat