Computer Science – Sound
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..739k&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 16, July 1989, p. 739-742.
Computer Science
Sound
28
Cyclotron Radiation, Electrostatic Waves, Oxygen, Rocket Sounding, Space Plasmas, Atmospheric Electricity, Conics, Electric Fields, Polar Substorms, Power Spectra
Scientific paper
A sounding rocket launched to 927 km apogee during an auroral substorm encountered regions of large quasi-static electric fields (not greater than 400 mV/m), ion conics (up to 700 eV maximum observed energy), and fluctuating electric fields near the oxygen cyclotron frequency. Since the fluctuating electric fields frequently exhibited spectral peaks just above the local oxygen cyclotron frequency, and since the fluctuating electric fields were linearly polarized, they are positively identified as electrostatic oxygen cyclotron waves (EOCW). The maximum amplitude of the EOCW was about 5 mV/m rms. The EOCW closely correlated with the presence of ion conics. Because of the relatively low amplitude of the EOCW and their relatively low coherence, it cannot be concluded that they are solely responsible for the production of the ion conics.
Arnoldy Roger
Garbe G.
Kintner Paul M.
Moore Thomas
Scales Wayne
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