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Nonlinear plasma wave processes observed in the polar cusp

Błęcki, Jan; Wronowski, Roman; Parrot, Michel +1 more

We present observations of electric and magnetic field variations from proton (about few Hz) to electron cyclotron frequencies (about few kHz) obtained by STAFF instrument on Cluster satellites during two cusp crossings, at ∼6 R_E altitude, in September 2002. The cusp was identified by the presence of intensive fluxes of counter streamin…