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Multi-spacecraft tracing of turbulent boundary layer

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Bibliographic Details
Title:	Multi-spacecraft tracing of turbulent boundary layer
Authors:	Savin, S.¹, Zelenyi, L.¹, Maynard, N.², Sandahl, I.³, Kawano, H.⁴, Russell, C.T.⁵, Romanov, S.¹, Amata, E.⁶, Avanov, L.¹, Blecki, J.⁷, Buechner, J.⁸, Consolini, G.⁶, Gustafsson, G.⁹, Klimov, S.¹, Marcucci, F.⁶, Nemecek, Z.¹⁰, Nikutowski, B.⁸, Pickett, J.¹¹, Rauch, J.L.¹², Safrankova, J.¹⁰
Source:	Advances in Space Research. Dec2002, Vol. 30 Issue 12, p2821. 10p.
Subjects:	Magnetopause, Space vehicles
Abstract:	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. [Copyright &y& Elsevier]
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Database:	Engineering Source

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