Intermittency and extended self-similarity in the solar wind turbulence

Details Intermittency and extended self-similarity in the solar wind turbulence Intermittency and extended self-similarity in the solar wind turbulence

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.conf...82b&link_type=abstract

Consiglio Nazionale delle Ricerche, International Solar Wind 8 Conference, p. 82

Physics

Solar Wind, Magnetohydrodynamic Flow, Intermittency, Magnetohydrodynamic Turbulence, Interplanetary Medium, Scaling Laws, Space Plasmas, Velocity Distribution, Solar Wind Velocity, Satellite Observation, Fractals, Hypotheses, Wind Measurement, Velocity Measurement

Scientific paper

Using the satellite measurements of the velocity field in the interplanetary plasma. we present some analysis which show the presence of a self-similar intermittent state in the solar wind turbulence. We used the so called Extended Self-Similarity hypothesis, which is well visible in the solar wind turbulence, showing convincing evidences for the presence of universal anomalous scaling laws. Through the Extended Self-Similarity we are able to calculate the scaling exponents of the velocity structure functions with very small uncertainties, and we show that these scaling exponents are in very good agreement with the multifractal models describing intermittency in magnetohydrodynamic flows.

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