Mathematics – Logic
Scientific paper
May 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.4005n&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 88, May 1, 1983, p. 4005-4014.
Mathematics
Logic
22
Auroral Zones, Dmsp Satellites, Geomagnetism, Interplanetary Magnetic Fields, Night Sky, Kp Index, Magnetospheric Instability, Plasma Layers, Solar Wind
Scientific paper
The size of the auroral oval varies dynamically in association with geomagnetic activity and with the interplanetary magnetic field (IMF). The present investigation can be regarded as an extension of studies conducted by Kamide and Winningham (1977), Gussenhoven et al. (1981), and Hardy et al. (1981). These investigators have reported on the relationship of the location of the auroral oval, as recorded by satellite borne electron spectrometers, with the intensity of the solar wind and magnetospheric electric fields. In the current investigation it is attempted to determine the most probable time scale of the auroral oval response to the IMF variations. Aurora imagery data for the nightside auroral oval recorded by three Defense Meteorological Satellite Program (DMSP) satellites are utilized. IMF data with high-time resolution are utilized to explain a detailed role of the solar wind parameters regarding changes in the auroral oval location at midnight.
Kamide Yohsuke
Nakai Hidekazu
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