Abstract Details
| Name: Dr. K. CHENNA REDDY Affiliation: Osmania University Conference ID: ASI2018_785 Title : A study on variation of meteor count and echo detection heights during solar cycle 23 and24 Authors and Co-Authors : B Premkumar and G Yellaiah Department of Astronomy, Osmania University, Hyderabad - 500 007 Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : Many meteoroids ablate and form an ionised trail that can be detected by radar techniques. With the wide-beam VHF radar technique, meteor trails can be detected in space and time, and also be possible to determine their mean height distribution precisely. The meteoroid ablation heights are useful in obtaining the information about the seasonal and long term variation of atmospheric density and other parameters. In this study, we examined the relationship between variation of meteor trail detection height and solar activity during the solar cycle 23-24, from the peak altitude of the sporadic meteor echoes observed at two meteor radar stations, Thumba (8.5oN, 77oE), India and Kototabang (0.2oS, 100.3oE), Indonesia. We observed that the solar activity influences the meteor ablating heights, during the solar maxima, meteor peak detection height rise to higher altitudes, of the order to 2 km. Here, we also reported the long term patterns of the meteor count rate at two different latitudes, the long term trend of decreasing meteor count is in good agreement with the sunspot number. |