Computer Science – Sound
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jatp...54..683r&link_type=abstract
(E-region irregularities; Selected Papers from the 23rd URSI General Assembly, Prague, Czechoslovakia, Aug. 28-Sept. 5, 1990. A9
Computer Science
Sound
22
Auroras, E Region, Earth Magnetosphere, Plasma Waves, Rocket Sounding, Doppler Effect, Eiscat Radar System (Europe), Molecular Ions, Oxygen Ions, Statistical Analysis, Wave Packets, Wave Propagation
Scientific paper
The ROSE campaign 1988/1989 was a combined effort of ROcket and Scatter Experiments to further investigate the dynamics and the structure of the auroral E-region. This paper presents rocket-borne dc and ac electric field measurements. It concentrates on the evaluation of low frequency fluctuations around 25 Hz which dominated the wave activity at about 100 km altitude. A statistical analysis of the observed field structure led to a simplified model wave field. Destabilized plasma waves are assumed to propagate in a cone perpendicular to the earth's magnetic field, according to theory, and grow to a maximum amplitude. Many of such 'fundamental waves' randomly distributed in space and time interfere and may create localized 'wave packets'. The resulting field structure exhibits the observed individual field variations as well as their statistics.
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