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Wave-number spectra and intermittency in the terrestrial foreshock region

Narita, Y., K. Glassmeier, and R. Treumann (2006), Wave-number spectra and intermittency in the terrestrial foreshock region, Physical Review Letters, 79(19).

Abstract
Wave-number spectra of magnetic field fluctuations are directly determined in the terrestrial foreshock region (upstream of a quasiparallel collisionless shock wave) using four-point Cluster spacecraft measurements. The spectral curve is characterized by three ranges reminiscent of turbulence: energy injection, inertial, and dissipation range. The spectral index for the inertial range spectrum is close to Kolmogorov’s slope, -5/3. On the other hand, the fluctuations are highly anisotropic and intermittent perpendicular to the mean magnetic field direction. These results suggest that the foreshock is in a weakly turbulent and intermittent state in which parallel propagating Alfvén waves interact with one another, resulting in the phase coherence or the intermittency.
BibTeX
@article{id909,
  author = {Y. Narita and K. Glassmeier and R. Treumann},
  journal = {Physical Review Letters},
  number = {19},
  title = {{Wave-number spectra and intermittency in the terrestrial foreshock region}},
  volume = {79},
  year = {2006},
}
EndNote
%0 Journal Article
%A Narita, Y.
%A Glassmeier, K.
%A Treumann, R.
%D 2006
%N 19
%V 79
%J Physical Review Letters
%T Wave-number spectra and intermittency in the terrestrial foreshock region
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Printed 21. Aug 2019 03:24