Intermittent turbulence , noisy fluctuations and wavy 1 structures in the Venusian magnetosheath and wake

نویسندگان

  • Z. Vörös
  • T. L. Zhang
  • M. P. Leubner
  • M. Delva
چکیده

Recent research has shown that distinct physical regions in 3 the Venusian induced magnetosphere are recognizable from the variations 4 of strength of the magnetic field and its wave/fluctuation activity. In this pa-5 per the statistical properties of magnetic fluctuations are investigated in the 6 Venusian magnetosheath and wake regions. The main goal is to identify the 7 characteristic scaling features of fluctuations along Venus Express (VEX) tra-8 jectory and to understand the specific circumstances of the occurrence of dif-9 ferent types of scalings. For the latter task we also use the results of mea-10 surements from the previous missions to Venus. Our main result is that the 11 changing character of physical interactions between the solar wind and the 12 planetary obstacle is leading to different types of spectral scaling in the near-13 Venusian space. Noisy fluctuations are observed in the magnetosheath, wavy 14 structures near the terminator and in the nightside near-planet wake. Multi

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تاریخ انتشار 2009