Evolution of fractality in space plasmas of interest to geomagnetic activity
Author
dc.contributor.author
Muñoz Gálvez, Víctor
Author
dc.contributor.author
Domínguez, Macarena
Author
dc.contributor.author
Valdivia Hepp, Juan
Author
dc.contributor.author
Good, Simon
Author
dc.contributor.author
Nigro, Giuseppina
Author
dc.contributor.author
Carbone, Vincenzo
Admission date
dc.date.accessioned
2018-08-03T14:03:47Z
Available date
dc.date.available
2018-08-03T14:03:47Z
Publication date
dc.date.issued
2018
Cita de ítem
dc.identifier.citation
Nonlin. Processes Geophys., 25, 207–216, 2018
es_ES
Identifier
dc.identifier.other
10.5194/npg-25-207-2018
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/150638
Abstract
dc.description.abstract
We studied the temporal evolution of fractality for geomagnetic activity, by calculating fractal dimensions from the Dst data and from a magnetohydrodynamic shell model for turbulent magnetized plasma, which may be a useful model to study geomagnetic activity under solar wind forcing. We show that the shell model is able to reproduce the relationship between the fractal dimension and the occurrence of dissipative events, but only in a certain region of viscosity and resistivity values. We also present preliminary results of the application of these ideas to the study of the magnetic field time series in the solar wind during magnetic clouds, which suggest that it is possible, by means of the fractal dimension, to characterize the complexity of the magnetic cloud structure.
es_ES
Patrocinador
dc.description.sponsorship
FONDECYT
1110135
1110729
1130273
1080658
1121144
1161711
3160305
CONICYT
Becas-Chile
7513047
CEDENNA
US AFOSR grant
FA9550-16-1-0384