Computer Science – Sound
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989p%26ss...37..657v&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 37, June 1989, p. 657-667. Research supported by the Swedish Space Corp.
Computer Science
Sound
19
Atmospheric Composition, Polar Regions, Rocket Sounding, Sodium, Xenon Chloride Lasers, Mass Spectroscopy, Optical Radar, Rocket-Borne Instruments
Scientific paper
Na lidar observations indicate that at high latitudes in summer the neutral Na layer frequently attains a double-peaked structure. The main layer with a maximum near 90 km altitude is supplemented by a secondary, narrow layer near 95 km altitude. Results are presented concerning secondary sodium layers. It appears likely that the formation of secondary Na layers observed frequently above the lidar site is not solely a 'sodium phenomenon', but part of a more comprehensive layering process for metal atoms and ions. Na(+)/Na density ratios close to 0.5 near the peaks of both the main and secondary layers are derived.
Goldberg Richard A.
Stegman Jacek
von Zahn Ulf
Witt Georg
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