Physics
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998georl..25.3779h&link_type=abstract
Geophysical Research Letters, Volume 25, Issue 20, p. 3779-3782
Physics
10
Ionosphere, Ionosphere: Ionospheric Dynamics, Ionosphere: Ionospheric Irregularities, Ionosphere: Midlatitude Ionosphere
Scientific paper
In this paper we present the characteristics of mid-latitude irregularities first observed with the 52 MHz Chung-Li radar. Intense type-1 echoes with Doppler velocities of about 270 m/s (slightly smaller than the nominal ion-acoustic wave speed of 360 m/s) in the height range from 103.1 km to 104.5 km lasted for about 2 minutes. The range-time variations of sequential power spectra indicate that the patch of type-1 irregularities moved toward the radar at a rate of about 42 m/s. The zonal drift motions of the type-1 and type-2 irregularities obtained from an interferometry technique showed that the irregularities drifted eastward with an average speed of 84 m/s.
Chu Y.-H. Y.-H.
Huang Chien-Ming
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