Physics
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.217..525o&link_type=abstract
In ESA Achievements of the Intern. Magnetospheric Study (IMS) p 525-528 (SEE N85-24544 14-46)
Physics
Hiss, International Magnetospheric Study, Isis Satellites, Plasmasphere, Very Low Frequencies, Dawn Chorus, Diurnal Variations, Extremely Low Frequencies, Nocturnal Variations, Whistlers
Scientific paper
Antarctic plasmaspheric hiss observed by ISIS satellites is discussed. The ELF hiss observed in the mid and low-latitude ionosphere is plasmaspheric hiss which propagates down to the ionosphere from the equatorially outer plasmasphere bouncing back and forth via lower hybrid resonance reflections between the plasmaspheric hemispheres. The latitudinal variation of the dayside chorus frequency observed by ISIS satellites is close to that of one half of the equatorial electron gyrofrequency. This implies that the dayside chorus in the midlatitude ionosphere is the magnetospheric chorus propagating from the dayside magnetosphere. The nightside chorus frequency shows no significant latitudinal variation. The VLF saucer occurs relatively near, below or above, the satellite in the polar topside ionosphere, and it propagates as whistlers at large wave normal angles to the geomagnetic field lines.
Nakamura Yoshifumi
Ondoh Tadanori
Watanabe Shin
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