The Observations of Meteor Trail Made with Chung-Li VHF Radar

  • Author(s): Yen-Hsyang Chu and Tson-Ron Chian
  • DOI: 10.3319/TAO.1990.1.2.175(A)
  • Keywords:
  • Citation: Chu, Y.-H. and T.-R. Chian, 1990: The observations of meteor trail made with Chung-Li VHF radar. Terr. Atmos. Ocean. Sci., 1, 175-191, doi: 10.3319/TAO.1990.1.2.175(A)
Abstract

Chung-Li VHF radar is a low power (average transmitted power is only 3.6 kw) and small aperture (physical antenna area is 4800 m2) coherent ST radar. This radar can effectively observe the mesospheric meteor events if the appropriate radar parameters are set. In this paper, some results of meteor events observed over Taiwan area by Chung-Li VHF radar (operating frequency is 52 M Hz) are obtained. We find that the height distribution of meteor trial is between 80 km and 120 km, and the peak value is occurred at about 93 km. There is a remarkably diurnal variation in the appearance of meteor event, maximum at the morning hour and minimum around the dusk. The average life time of the meteor trial is about 0.35 s. Furthermore, the diffusive coefficients in the meteor zone, calculated from the information of life time of meteor tail, are also estimated and between 0.1 m2 s-1 to 1 m2 s-1. These results are quite consistent with the others' observations.

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