Computer Science
Scientific paper
Jun 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.conf...73z&link_type=abstract
Bern Univ., International Solar Wind 8 Conference, p. 73
Computer Science
Dynamic Characteristics, Helium Ions, Solar Wind, Solar Corpuscular Radiation, Plasma Dynamics, Kolmogorov Theory, Plasma Turbulence, Solar Wind Velocity
Scientific paper
We characterize the dynamic properties of He ions of the solar wind. Because of the non-negligible abundance and the significant fraction of momentum flux inherent in helium ions, this species has an influence on the state of turbulence. Especially, we analyze the helium dynamic properties of different solar wind types. After a discussion of the influence of measurement errors on the statistical analysis of He bulk velocities, we investigate the structure function dependency on the solar wind state. We find a self-similar sealing in the range of minutes to days with characteristic structure function slopes deviating from the canonical Kolmogorov values. For comparison with previous studies, we also analyze H structure functions of the same time periods and discuss differences of coinciding He and H structure functions in the framework of the concept of intermittency.
Bochsler Peter
von Steiger Rudolf
Zurbuchen Th.
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