Computer Science – Sound
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.6861d&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 91, June 1, 1986, p. 6861-6870. Research supported by the Alexander S. On
Computer Science
Sound
23
Energetic Particles, Magnetic Storms, Plasma Layers, Satellite Sounding, Space Plasmas, Flux Quantization, International Sun Earth Explorer 1, International Sun Earth Explorer 2, Magnetospheric Instability
Scientific paper
Plasma sheet dynamics during substorms are studied by analyzing 461 cases of transient dropout events of the 1.5 and 6-keV particle fluxes detected by ISEE 1 and 2 satellites. The instruments for detecting low- and high-energy particles are described. The spatial distribution of flux dropout events, and the events' relationship to magnetospheric activity level are examined. Substorm events without observed flux dropout events are investigated. The data reveal that the flux dropout distribution is isotropic, between 12-23 earth radii, and is present in the entire nightside plasma sheet; and the substorms without flux dropout are more frequent near earth and magnetospheric flanks. It is observed that tailward of 12 earth radii the flux dropout events and substorms without flux dropout are similar. The Chao et al. (1977) MHD rarefaction wave propagation model and the Hones (1973, 1980) near-tail, X-type magnetic neutral line formation model are discussed and compared to the experimental data. It is noted that neither model explains the plasma sheet dynamics observed.
Dandouras Jannis
Parks George K.
Reme Henri
Saint-Marc A.
Sauvaud Jean-Andre
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