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Plasma instabilities in meteor trails: 2-D simulation studies
2-D simulation studies Plasma instabilities
2017/3/22
Field-aligned plasma density irregularities detected as nonspecular echoes by radars
with large aperture-power products indicate the presence of plasma turbulence within
meteor trails. This paper pr...
Interpretation of non-specular radar meteor trails
radar meteor trails consistent features
2017/3/22
Radar data of non-specular meteor trails shows two
clear and consistent features: (1) non– specular meteor trails
are observed from a narrower altitude range than are head
echoes and (2) an approxi...
Radar observations of meteor trails, and their interpretation using Fresnel holography: a new tool in meteor science
meteor trails Fresnel holography meteor science
2009/2/27
A Fresnel transform technique has been developed at Adelaide to analyse radar meteor echoes detected in the transverse mode. The genesis for this technique was the study of the structure of the scatte...
Aspect sensitivity of VHF echoes from field aligned irregularities in meteor trails and thin ionization layers
VHF echoes meteor trails thin ionization layers
2009/2/25
The aspect sensitivity of VHF echoes from field aligned irregularities (FAI) within meteor trails and thin ionization layers is studied using numerical models. Although the maximum power is obtained w...
Dependence of radar signal strength on frequency and aspect angle of nonspecular meteor trails
radar signal strength frequency and aspect angle
2017/3/22
When a meteoroid penetrates Earth’s atmosphere, it forms a high-density ionized
plasma column immersed in the ionosphere between approximately 70 and 140 km
altitude. High-power, large-aperture (HPL...
Modelling high-power large-aperture radar meteor trails
Plasma instabilities Large-aperture radars
2017/3/22
Despite decades of research, many questions remain about the global flux of meteoroids at Earth, their influence on
the atmosphere, and their use as upper atmospheric diagnostics. We see high-power l...
Ablation of micrometeoroids between 70 and 130 km altitude in the atmosphere
creates plasma columns with densities exceeding the ambient ionospheric electron density
by many orders of magnitude. Den...