Physics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9719129b&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A12, p. 19,129-19,137.
Physics
15
Interplanetary Space, Magnetohydrodynamic Turbulence, Solar Wind Velocity, Traveling Waves, Energy Transfer, Kinetic Energy, Low Frequencies, Wave Propagation
Scientific paper
The role of local interplanetary sources in the evolution of low-frequency Alfvenic turbulence in solar wind was investigated by studying a solar wind region with high differential kinetic energy at different heliocentric distances inside 1 AU, with focus placed on large-scale fluctuations. Results of a detailed analysis, based on hourly averages of plasma and magnetic field data of Helios 2, indicated that, at least for the inner heliosphere, an established view that local sources of waves play a relevant role in driving the Alfvenic turbulence evolution is not realistic. It is proposed that such evolution, especially at large scales, is governed by interactions of the outward waves of solar origin with the wind structure.
Bavassano Bruno
Bruno Roberto
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