Physics
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.4116t&link_type=abstract
Journal of Geophysical Research, vol. 84, Aug. 1, 1979, p. 4116-4124.
Physics
3
Dawn Chorus, Earth Magnetosphere, Extremely Low Frequencies, Hiss, Longitude, Ogo-3, Ogo-5, Ogo-6
Scientific paper
Search coil magnetometer data obtained in the magnetosphere on Ogo 5 and Ogo 6 were studied for evidence of man-induced stimulation of the two dominant electromagnetic emissions, chorus and plasmaspheric hiss. Variability of chorus with geographic longitude and enhancements, onsets, and quantum jumps in chorus emissions at frequencies related to harmonics of the earth's transmission lines are discussed. The enhancement of weak emissions in the 340-360 deg dipole longitude region during quiet geomagnetic conditions is present only when ELF hiss is weak, and will not contribute to the non-adiabatic dynamics of radiation belt electrons. It is concluded that the data analyzed is consistent with a predominantly natural origin for chorus and plasmaspheric hiss, and that triggered waves do not play a major role in the non-adiabatic dynamics of geomagnetically trapped electrons.
Church S. R.
Mansergh Thorne Richard
Tsurutani Bruce T.
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