Search Publications

Dynamics and characteristics of electric-field structures in the auroral return current region observed by Cluster

André, M.; Buchert, S.; Kistler, L. M. +5 more

The temporal evolution and other characteristics of intense quasi-static electric fields in the return current region are discussed using Cluster observations. A narrow-scale, divergent electric field, the high-altitude signature of a positive U-shaped potential structure, was observed at the poleward edge of the central plasma sheet, close to mag…

Dispersive Alfvén Waves Observed by Cluster at the Magnetopause

Khotyaintsev, Y.; Stasiewicz, K.; Grzesiak, M.

We have analyzed ELF turbulence ∼0.03 - 10 Hz) observed by Cluster at the magnetopause layer during 120 multiple magnetopause crossings on a single event, December 31, 2000, 09-16 UT. Multiple crossings are produced by nonlinear, large amplitude surface waves at the magnetopause. Waves below the proton gyrofrequency fci ≈ 0.3 Hz) are identified as…