Statistics – Computation
Scientific paper
Aug 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988p%26ss...36..833z&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 36, Aug. 1988, p. 833-839. Research supported by the Takeda Science Foundatio
Statistics
Computation
3
Longitude, Wave Propagation, Whistlers, Asymmetry, China, Electron Density (Concentration), Exosphere, Japan, Latitude
Scientific paper
The longitudinal effect of whistler propagation properties in the Chinese and Japanese meridian planes is studied using ray-tracing computations of nonducted propagation for the realistic nighttime density models at these meridian planes as deduced from satellite density measurements. A cross-over geographic latitude of 28 deg is found. A few degrees below this latitude, the ionospheric transmission condition of the downgoing whistlers in the Northern Hemisphere is easily satisfied in the Chinese meridian plane (geographic latitude = 114 deg E), whereas above this latitude the Japanese meridian plane (130 deg E) is more suitable for the ionospheric transmission. It is suggested that this longitudinal asymmetry results from the combined effect of the difference in the negative latitude gradient of the electron density in these two meridian planes and in the longitude gradient. Comparison with other studies of nighttime whistlers shows good agreement.
Hayakawa Masahiko
Xu Jin-Shi
Zhou H. B.
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