Physics
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jatp...56..735s&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 56, no. 6, p. 735-753
Physics
17
Earth Magnetosphere, Geomagnetic Pulsations, Hiss, Radio Emission, Very Low Frequencies, Whistlers, Geos Satellites (Esa), Periodic Variations, Satellite Observation
Scientific paper
A review of periodic and quasiperiodic (QP) very low frequency (VLF) emissions observed at ground-based stations and in the Earth's magnetosphere is presented. Emissions with periods below 10 s are divided into three main groups: periodic emissions, hisslers and pulsating hiss, while the quasiperiodic emissions with periods above 10 s are divided into two main groups: QP1, which are definitely related to geomagnetic pulsations, and QP2, which are not obviously related to them, based on ground observations. However, it is pointed out that all types of quasiperiodic emissions with periods over 10 s observed onboard satellites show some association with geomagnetic pulsations which suggests that both QP1 and QP2 can have similar mechanisms for their generation. Different approaches to the theoretical modeling of periodic and quasiperiodic emissions are discussed.
Hayakawa Masahiko
Sazhin Sergei S.
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