Cluster observations of lower hybrid turbulence within thin layers at the magnetopause

Details Cluster observations of lower hybrid turbulence within thin layers at the magnetopause Cluster observations of lower hybrid turbulence within thin layers at the magnetopause

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3103804v&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 3, CiteID L03804

Physics

Plasma Physics

21

Magnetospheric Physics: Magnetopause, Cusp, And Boundary Layers, Magnetospheric Physics: Plasma Waves And Instabilities, Space Plasma Physics: Transport Processes, Space Plasma Physics: Turbulence

Scientific paper

We use data from the Cluster satellites to study waves in the frequency range of ~2-150 Hz at the magnetopause. In addition to broad band wave turbulence we identify lower hybrid drift waves and whistler waves. Wave amplitudes maximize within narrow current sheets that are associated with density gradients and electron beams and that can be the separatrices of the reconnection. The dispersion properties of lower hybrid drift waves are studied using interferometric measurements of electric field. A direct estimate of the wave role in the particle diffusion across the magnetopause shows that their importance is limited only to the narrow current sheet.

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