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| Titel |
Global variation of meteor trail plasma turbulence |
| VerfasserIn |
L. P. Dyrud, J. Urbina, J. T. Fentzke, E. Hibbit, J. Hinrichs |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 29, no. 12 ; Nr. 29, no. 12 (2011-12-16), S.2277-2286 |
| Datensatznummer |
250017145
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| Publikation (Nr.) |
 copernicus.org/angeo-29-2277-2011.pdf |
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| Zusammenfassung |
| We present the first global simulations on the occurrence of meteor trail
plasma irregularities. These results seek to answer the following questions:
when a meteoroid disintegrates in the atmosphere, will the resulting trail
become plasma turbulent? What are the factors influencing the development of
turbulence? and how do these trails vary on a global scale? Understanding
meteor trail plasma turbulence is important because turbulent meteor trails
are visible as non-specular trails to coherent radars. Turbulence also
influences the evolution of specular radar meteor trails; this fact is
important for the inference of mesospheric temperatures from the trail
diffusion rates, and their usage for meteor burst communication. We provide
evidence of the significant effect that neutral atmospheric winds and
ionospheric plasma density have on the variability of meteor trail evolution
and on the observation of non-specular meteor trails. We demonstrate that
trails are far less likely to become and remain turbulent in daylight,
explaining several observational trends for non-specular and specular meteor
trails. |
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