Computer Science – Sound
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47..791p&link_type=abstract
(IUGG, IAGA, USAF, et al., International Symposium on Equatorial Aeronomy, 7th, Hong Kong, Mar. 22-29, 1984) Journal of Atmosphe
Computer Science
Sound
7
Daytime, E Region, Equatorial Atmosphere, Rocket Sounding, Space Plasmas, Equatorial Electrojet, Ionospheric Disturbances, Ionospheric Electron Density, Magnetohydrodynamic Stability, Vertical Distribution
Scientific paper
Three in situ rocket observations of electrostatic fluctuations which characterize the strong, mild, and weak day-time unstable E-region are compared. The fluctuations are analyzed in relation to the ambient electron density gradients, the measured or inferred drift velocities and, where possible, to simultaneous VHF backscatter radar measurements. Based on these parameters, the linear dispersion relation is solved to find the range of altitudes and wavenumbers for which the growth rate indicates that instability will occur. These computations are compared with actual observations of the irregularities. How well the linear growth rate predicts the altitude range of the unstable layer, and to what extent the regime of the unstable wavenumbers is reflected in the spectra of the irregularities, is shown. Overall, the agreement is good.
Brace Larry H.
Fejer Bela G.
Kelley Michael C.
Maynard Nelson C.
Pfaff Robert F.
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