Magnetosheath Plasma Turbulence and Its Spatiotemporal Evolution as Observed by the Cluster Spacecraft

Journal Article · Fri May 23 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.205003· OSTI ID:21132448

Yordanova, E; Vaivads, A; Andre, M; Buchert, S C; Voeroes, Z ^[1]

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1. Swedish Institute of Space Physics, Uppsala (Sweden) and Space Research Institute, Sofia (Bulgaria)

We study the plasma turbulence, at scales larger than the ion inertial length scale, downstream of a quasiparallel bow shock using Cluster multispacecraft measurements. We show that turbulence is intermittent and well described by the extended structure function model, which takes into account the spatial inhomogeneity of the cascade rate. For the first time we use multispacecraft observations to characterize the evolution of magnetosheath turbulence, particularly its intermittency, as a function of the distance from the bow shock. The intermittency significantly changes over the distance of the order of 100 ion inertial lengths, being increasingly stronger and anisotropic away from the bow shock.

• OSTI ID: 21132448
• Journal Information: Physical Review Letters, Vol. 100, Issue 20; Other Information: DOI: 10.1103/PhysRevLett.100.205003; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANISOTROPY
EVOLUTION
MAGNETOSHEATH
PLASMA
SHOCK WAVES
STRUCTURE FUNCTIONS
TURBULENCE