Computer Science – Sound
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984georl..11..511b&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 11, May 1984, p. 511-514.
Computer Science
Sound
27
Auroral Zones, Electric Pulses, Ionospheric Currents, Plasma Waves, Solitary Waves, Electric Field Strength, Electron Precipitation, Field Aligned Currents, Ionospheric Electron Density, Ionospheric Sounding, Rocket Sounding
Scientific paper
Two types of large electric field signatures, individual pulses and pulse trains, were observed on a sounding rocket launched into the afternoon auroral zone on January 21, 1982. The typical electric fields in the individual pulses were 50 mV/m or larger, aligned mostly parallel to B, and the corresponding potentials were at leat 100 mV (kT approximately 0.3 eV). A lower limit of 15 km/sec can be set on the velocity of these structures, indicating that they were not ion acoustic double layers. The pulse trains, each consisting of on the order of 100 pulses, were observed in close association with intense plasma frequency waves. This correlation is consistent with the interpretation of these trains as Langmuir solitons. The pulse trains correlate better with the intensity of the field-aligned currents than with the energetic electron flux.
Boehm M. H.
Carlson Carl W.
McFadden Johnjoe
Mozer Forrest S.
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