DOI: 10.1029/2018JA025706
Scopus记录号: 2-s2.0-85052787321
论文题名: Recognition of Meteor Showers From the Heights of Ionization Trails
作者: Lukianova R. ; Kozlovsky A. ; Lester M.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 8 起始页码: 7067
结束页码: 7076
语种: 英语
英文关键词: height of meteor ablation
; meteor radar
; properties of meteoroids
; sporadic and shower meteors
英文摘要: Meteoroids constantly enter the Earth's atmosphere, collide with atmospheric molecules, and heat and ablate in the sufficiently dense atmospheric layers at heights between 70 and 110 km. It is still a problem to recognize properties of the meteor streams among the sporadic background. The meteor radar observations at Sodankylä Geophysical Observatory (67°22′N, 26°38′E, Finland) during 2008–2017 show that meteoroids of some showers produce ionization trails at altitudes noticeably exceeding those of sporadic meteors. Using the median height of meteor trails and corresponding upper and lower quartiles as a metric, we unambiguously distinguish all northern hemisphere meteor showers with a zenithal hourly rate larger than 12, namely, the Quadrantids, Lyrids, Eta Aquariids, Arietids (or/and Daytime Zeta Perseids), Perseids, Orionids, Leonids, and Geminids. Additionally, signatures of a possible meteor stream during 26–30 January were detected, although identification of this stream is still under question. This new analysis indicates that the origin of the shower meteor trails at higher altitudes is likely due to higher speed and probably lighter or less dense meteoroids belonging to the showers. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113403
Appears in Collections: 气候减缓与适应
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作者单位: Geophysical Center of Russian Academy of Science, Moscow, Russian Federation; Space Research Institute, Moscow, Russian Federation; Sodankylä Geophysical Observatory, Sodankylä, Finland; Department of Physics and Astronomy, University of Leicester, Leicester, United Kingdom
Recommended Citation:
Lukianova R.,Kozlovsky A.,Lester M.. Recognition of Meteor Showers From the Heights of Ionization Trails[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(8)