Mathematics – Logic
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2385l&link_type=abstract
Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2385-2400.
Mathematics
Logic
36
Auroral Irradiation, Diffuse Radiation, Radio Auroras, Satellite-Borne Photography, Electron Precipitation, Geomagnetism, Ionospheric Electron Density, Magnetic Equator, Magnetic Storms, Magnetohydrodynamic Stability, Meteorological Satellites, Nocturnal Variations, Plasma Layers, Polar Regions, Surface Waves
Scientific paper
A description is presented of the first observation of large scale undulations in the equatorward boundary of the diffuse aurora by pictures of global auroral displays in the afternoon-evening sector. These observations are made by a broad band scanning radiometer on the Defense Meteorological Satellite Program (DMSP) satellites. Attention is given to four periods during which the equatorward boundary of the diffuse aurora is undulated. Three of these are taken in the southern polar region and one in the northern polar region. The duration of the undulations is considered along with geomagnetic and interplanetary conditions. All undulations are found to occur during the period of a geomagnetic storm near the peak development of the storm-time ring current. All are accompanied by substorm patterns of discrete auroras.
Ismail Syed
Lui Anthony Tat Yin
Meng Ching I.
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