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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.39 [2010] >
IJRSP Vol.39(1) [February 2010] >
| Title: | Mesospheric sodium over Gadanki during Geminid meteor shower 2007 |
| Authors: | Lokanadham, B
Chandra, N Rakesh
Rao, S Vijaya Bhaskara
Raghunath, K
Yellaiah, G |
| Keywords: | Geminid meteor shower
Mesospheric sodium |
| Issue Date: | Feb-2010 |
| Publisher: | CSIR |
| PACS No.: | 96.30.Za; 92.60.hc |
| Abstract: | Resonance LIDAR system at Gadanki has been
used for observing the mesospheric sodium during the night of 12-13 Dec 2007
when the peak activity of Geminid meteor shower occurred. Geminid meteor shower
is observed along with the co-located MST radar in the altitude range 80-110
km. Sodium density profiles have been obtained with a vertical resolution of
300 m and a temporal resolution of 120 s with sodium resonance scattering LIDAR
system. The sodium layers were found to exist in the altitude range 90-100 km.
The enhanced Geminid meteor rates were recorded with the co-located MST radar
in the same altitude range. The sodium concentration in the atmospheric
altitude of ~93 km is estimated to be 2000 per cc where the meteoric
concentration of Geminid is maximum and reduced to around 800 on the non
activity of Geminid. These observations showed that the sodium levels in the
E-region are found to be increasing during meteor shower nights at least by a
factor of two. |
| Page(s): | 7-10 |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.39(1) [February 2010]
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