Quasi-periodic drift motions of meter-scale irregularities observed at the Chung-Li VHF radar

Details Quasi-periodic drift motions of meter-scale irregularities observed at the Chung-Li VHF radar Quasi-periodic drift motions of meter-scale irregularities observed at the Chung-Li VHF radar

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jastp..65..285h&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 65, Issue 3, p. 285-292.

Physics

Scientific paper

The observations of meter-scale, field-aligned irregularities made at the Chung-Li VHF radar are presented. Applying radar interferometry, the temporal and spatial variations of backscatter positions show the appearance of quasi-periodic (QP) drift motions, with wavelengths of about 10-15km, and wave frequencies close to the Brunt-Vaisala frequency. This periodicity also reflects the so-called QP echoes shown in the range-time-intensity (RTI) plots. In-beam images of scatters are also analyzed in this paper, results show that the scattering structures are mainly organized along wave fronts. But, in some cases, the quasi-point target scatters are responsible for the striations in the RTI plots.

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