Physics
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9521059p&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Dec. 1, 1990, p. 21059-21067. Research supported by Aerospace Corp.
Physics
1
Artificial Clouds, Barium Ion Clouds, Ion Cyclotron Radiation, Plasma Waves, Space Plasmas, Doppler Radar, Field Aligned Currents, Night Sky, Radar Echoes, Very High Frequencies
Scientific paper
Plasma waves associated with two shaped-charge barium releases from Wallops Island (Virginia) on May 13, 1986 were investigated using a 50 MHz Doppler radar interferometer and a 138-MHz Doppler radar operated from Kennedy Space Center. During the first barium release, measurements showed the existence of short-lived coherent 3-m and 1-m waves centered near 30 Hz. The coherent 30-Hz radar echoes were very similar to some naturally occurring auroral radar echoes that are believed to be generated by resistive current-driven electrostatic ion cyclotron (EIC) waves. The 30-Hz waves seen by the two radars far above the release are interpreted as strong EIC waves generated by intense field-aligned currents associated with the barium stream acting like an MHD generator coupled to the ionosphere.
Djuth Frank T.
Kelley Michael C.
Noble Steve
Providakes Jason
Swartz Wesley E.
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