Dispersive Pc1 bursts observed by Freja

Journal Article · Mon Aug 15 00:00:00 EDT 1994 · Geophysical Research Letters

DOI:https://doi.org/10.1029/94GL01584· OSTI ID:28546

Mursula, K; Braeysy, T; Rasinkangas, R; Tanskanen, P ^[1]; Blomberg, L G; Lindqvist, P A; Marklund, G T ^[2]

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1. Univ. of Oulu (Finland)
2. Royal Institute of Technology, Stockholm (Sweden)

The authors report on observation of electromagnetic ion cyclotron waves (Pc1 pulsations) by the Freja satellite on November 18, 1992. These observations are coincident with ground based observation of such pearl like Pc1 pulsations extending over a 12 hour period. This is the first observation by a satellite above the ionosphere of such phenomena. The wave pulsations were observed to come in 10 to 25 second pulses, and to be clearly dispersive in nature. Two spectral bands were observed in all Pc1 pearls. In the longer bursts, the authors observed time differences between the two distinct spectral bands.

• OSTI ID: 28546
• Journal Information: Geophysical Research Letters, Vol. 21, Issue 17; Other Information: PBD: 15 Aug 1994
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ION PLASMA WAVES
REMOTE SENSING
TIME DEPENDENCE
ELECTROMAGNETIC PULSES
SATELLITES
EARTH MAGNETOSPHERE