Density waves in Titan's upper atmosphere
文献类型：期刊论文
| 作者 | Cui, J.1,2 ; Yelle, R. V.3; Li, T.4; Snowden, D. S.3; Mueller-Wodarg, I. C. F.5
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
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| 出版日期 | 2014 |
| 卷号 | 119期号:1页码:490-518 |
| 关键词 | titan thermosphere gravity wave |
| 英文摘要 | Analysis of the Cassini Ion Neutral Mass Spectrometer data reveals the omnipresence of density waves in various constituents of Titan's upper atmosphere, with quasi-periodical structures visible for N-2, CH4,N-29(2), and some of the minor constituents. The N-2 amplitude lies in the range of approximate to 4%-16%with a mean of approximate to 8%. Compositional variation is clearly seen as a sequence of decreasing amplitude with increasing scale height. The observed vertical variation of amplitude implies significant wave dissipation in different constituents, possibly contributed by molecular viscosity for N(2)but by both molecular viscosity and binary diffusion for the others. A wave train with near horizontally propagating wave energy and characterized by a wavelength of approximate to 730km and a wave period of approximate to 10h is found to best reproduce various aspects of the observations in a globally averaged sense. Some horizontal and seasonal trends in wave activity are identified, suggesting a connection between the mechanism driving the overall variability in the background atmosphere and the mechanism driving the waves. No clear association of wave activity with magnetospheric particle precipitation can be identified from the data. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000333028600043 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6551]  |
| 专题 | 国家天文台_月球与深空探测研究部 |
| 作者单位 | 1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Lunar & Deep Space Explorat, Beijing, Peoples R China 3.Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA 4.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China 5.Univ London Imperial Coll Sci Technol & Med, Dept Phys, London, England |
| 推荐引用方式 GB/T 7714 | Cui, J.,Yelle, R. V.,Li, T.,et al. Density waves in Titan's upper atmosphere[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2014,119(1):490-518. |
| APA | Cui, J.,Yelle, R. V.,Li, T.,Snowden, D. S.,&Mueller-Wodarg, I. C. F..(2014).Density waves in Titan's upper atmosphere.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,119(1),490-518. |
| MLA | Cui, J.,et al."Density waves in Titan's upper atmosphere".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 119.1(2014):490-518. |
入库方式： OAI收割
来源：国家天文台
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