Observational evidence of high-altitude meteor trail from radar interferometer
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(Published version)
Date
2014
Authors
Li, G.
Ning, B.
Wan, W.
Reid, I.
Hu, L.
Yue, X.
Younger, J.
Dolman, B.
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Journal article
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Geophysical Research Letters, 2014; 41(19):6583-6589
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Guozhu Li, Baiqi Ning, Weixing Wan, I. M. Reid, Lianhuan Hu, Xinan Yue, J. P. Younger and B.K. Dolman
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Abstract
Whether radar meteor echoes occur at high altitudes (above ~130 km) in the Earth's atmosphere is a long-standing question within the meteor radar community. Using observations from the Sanya VHF coherent radar interferometer during 11 July to 10 August 2013, we have found a new class of range-spread high-altitude meteor trail echoes (HAMEs), some of which appeared at ~170 km altitude lasting more than 10 s. A statistical analysis on the local time dependence of the identified HAME events shows a maximum around 00–04 LT. The results imply that there could be much more meteor mass input due to meteoroid sputtering at high altitudes in the Earth's atmosphere than previously thought.
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© 2014 American Geophysical Union. All rights reserved