Multi-spacecraft tracing of turbulent boundary layer

S. Savin, L. Zelenyi, N. Maynard, I. Sandahl, H. Kawano, C. T. Russell, S. Romanov, E. Amata, L. Avanov, J. Blecki, J. Buechner, G. Consolini, G. Gustafsson, S. Klimov, F. Marcucci, Z. Nemecek, B. Nikutowski, J. Pickett, J. L. Rauch, J. SafrankovaA. Skalsky, V. Smirnov, K. Stasiewicz, P. Song, J. G. Trotignon, Yu Yermolaev

研究成果: Contribution to journalArticle査読

31 被引用数 (Scopus)

抄録

Multi-spacecraft tracing of the high latitude magnetopause (MP) and boundary layers and Interball-1 statistics indicate that: (a) The turbulent boundary layer (TBL) is a persistent feature in the region of the cusp and 'sash', a noticeable part of the disturbances weakly depends on the interplanetary magnetic field By component; TBL is a major site for magnetosheath (MSH) plasma penetration inside the magnetosphere through percolation and local reconnection. (b) The TBL disturbances are mainly inherent with the characteristic kinked double-slope spectra and, most probably, 3-wave cascading. The bi-spectral phase coupling indicates self-organization of the TBL as the entire region with features of the non-equilibrium multi-scale and multi-phase system in the near-critical state. (c) We've found the different outer cusp topologies in summer/winter periods: the summer cusp throat is open for the decelerated MSH flows, the winter one is closed by the distant MP with a large-scale (-several Re) diamagnetic 'plasma ball' inside; the MP; the 'ball' is filled from MSH through patchy merging rather than large-scale reconnection. (d) A mechanism for the energy release and mass inflow is the local TBL reconnection, which operates at the larger scales for the average anti-parallel fields and at the smaller scales for the nonlinear fluctuating fields; the latter is operative throughout the TBL. The remote from TBL anti-parallel reconnection seems to happen independently.

本文言語英語
ページ(範囲)2821-2830
ページ数10
ジャーナルAdvances in Space Research
30
12
DOI
出版ステータス出版済み - 12 2002

All Science Journal Classification (ASJC) codes

  • 航空宇宙工学
  • 天文学と天体物理学
  • 地球物理学
  • 大気科学
  • 宇宙惑星科学
  • 地球惑星科学(全般)

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