Multifractal and chaotic properties of solar wind at MHD and kinetic domains

Alberti T., Consolini G., Carbone V., Yordanova E., Marcucci M. F., De Michelis P.

IV - Geofisica e fisica dell'ambiente
GSSI Ex ISEF - Aula D - Lunedì 23 h 15:00 - 19:00
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Turbulence, intermittency, and self-organized structures in space plasmas can be investigated by using a multifractal formalism mostly based on the canonical structure function analysis. Here, the Empirical Mode Decomposition (EMD) method is firstly used to investigate timescale fluctuations of the solar-wind magnetic-field components; then, by exploiting the local properties of fluctuations, the structure function analysis is used to gain insights into the scaling properties of both inertial and dissipative ranges. Results show that while the inertial range dynamics can be described in a multifractal framework, the dissipative range dynamics is well described by using a monofractal approach.

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