Mathematics – Probability
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9613943b&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Aug. 1, 1991, p. 13,943-13,952. Research supported by FAPESP and CNPq
Mathematics
Probability
55
Auroral Electrojets, Electron Precipitation, F Region, Ionospheric Electron Density, Magnetic Storms, Ion Production Rates, Ionosondes, Plasma Drift, Precipitation Particle Measurement
Scientific paper
Anomalous behavior observed during the geomagnetic storm is discussed to develop explanations of the mechanisms which contribute to the storm's morphology and characteristics. Ionosonde data and total electron content data are presented, emphasizing the probability of penetrating magnetospheric electric fields. The discussion focuses on the role of electric fields penetrating from high to low latitudes, the contribution of particle precipitation, and the importance of composition changes. The correlation of F-region peak density and height anomalies with marked variations in the H component of the magnetic field support the penetration of westward electric fields at equatorial and low latitudes. The topside ionosphere is theorized to have been compressed during the storm, and measurements of increased N(max) and an extra F1 layer suggest that particle precipitation generated an extra ionization source.
Abdu Mangalathayil Ali
Batista Inez S.
de Paula Eurico R.
Trivedi Nalin Babulal
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