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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.39 [2010] >
IJRSP Vol.39(3) [June 2010] >
| Title: | MST radar observations of meteor showers and trail induced irregularities in the ionospheric E–region |
| Authors: | Chandra, N Rakesh
Yellaiah, G
Rao, S Vijaya Bhaskara
GeethaRamKumar, R |
| Keywords: | Meteor shower
Perseid meteor shower
Leonid meteor shower
Geminid meteor shower
E-region irregularities |
| Issue Date: | Jun-2010 |
| Publisher: | CSIR |
| PACS No.: | 96.30.Za; 94.20.Vv; 94.20.dg |
| Abstract: | The Doppler spectra of amplitude variations for meteor trails and
sporadic–E layers have simultaneously been recorded with MST radar at Gadanki
during the active periods of Perseid, Leonid and Geminid meteor showers in
2007. The variations of the activities of the radar meteors during the shower
periods and the occurrences of E–region irregularities as observed with MST
radar are presented in this paper. It has been noticed that the discrete strata
of sporadic–E occurring in the altitude range 95–110 km during these shower
periods with maximum percentage of occurrence on the nights of peak activities
of these meteor showers. The close inspection of radar meteor data reveal the
generation of faint Type-1 echo during the peak active period of the Geminid
shower with reduced Doppler velocities by 20% at the altitude of 91 km and are
found to be imbedded in the strong Type–2. The radar data of meteors are also
used to retrieve the temperatures of MLT region. |
| Page(s): | 138-143 |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.39(3) [June 2010]
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