Computer Science – Sound
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982rarlr..28..457i&link_type=abstract
Radio Research Laboratories, Review (ISSN 0033-801X), vol. 28, June 1982, p. 457-470. In Japanese, with abstract in English.
Computer Science
Sound
Helium Ions, Ionospheric Composition, Ionospheric Ion Density, Ionospheric Sounding, Japanese Spacecraft, Satellite Sounding, Annual Variations, Diurnal Variations, Hydrogen Ions, Kp Index, Mass Spectrometers, Solar Activity
Scientific paper
Ionospheric composition data sensed by a Bennett ion mass spectrometer on-board the ISS-b spacecraft were used to characterize the diurnal, latitudinal, and seasonal variations in the ion composition. The data were gathered in the August 1978 to December 1979 interval, a period of maximum solar activity. The midlatitude trough structure was consistently represented by the H(+) and He(+) latitudinal profiles, and appeared deeper at night than during the day. A deeper equatorial depression of He(+) was also observed at night, while seasonal variations of the same ions, which displayed the winter bulge structure, disappeared at night. The midlatitude trough dependence on the Kp index was statistically defined from latitudinally invariant H(+) profiles.
Iwamoto Iwao
Sagawa Eiichi
Suitz T.
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