Evolution of fractality in magnetized plasmas
Abstract
Abstract. We studied the temporal evolution of fractality for geomagnetic activity, by calculating fractal dimensions from Dst data and from an MHD shell model for a 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. Results suggest that the fractal dimension is able to characterize the complexity of the magnetic cloud structure.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 07, 2017
- Source ID
- 10.5194/npg-2017-47
Entities
People
- Giuseppina Nigro
- Juan Alejandro Valdivia
- Macarena Domínguez
- Simon W. Good
- Vincenzo Carbone
- Víctor Muñoz
Organizations
- Air Force Office of Scientific Research
- CONICYT
- National Fund for Scientific and Technological Development