| DOI: | 10.1029/2012GL054621
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| 论文题名: | Compositional effects in Titan's thermospheric gravity waves |
| 作者: | Cui J.; Lian Y.; Müller-Wodarg I.C.F.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9425
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| EISSN: | 1944-9156
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| 出版年: | 2013
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| 卷: | 40, 期:1 | | 起始页码: | 43
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| 结束页码: | 47
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| 语种: | 英语
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| Scopus关键词: | Compositional effects
; Density profile
; Internal gravity waves
; Ion neutral mass spectrometers
; Periodical structure
; Perturbation theory
; Phase angles
; Wave structures
; Upper atmosphere
; Gravity waves
; amplitude
; gravity wave
; hydrogen
; mass spectrometry
; methane
; periodicity
; planetary atmosphere
; Titan
; upper atmosphere
; wavelength
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| 英文摘要: | In Titan's upper atmosphere, the density profiles of several constituents (N2, CH4, H2, and 29N2) as measured by the Cassini Ion Neutral Mass Spectrometer show periodical structures which we interpret as internal gravity waves. Compositional effects are frequently seen in the data, in which the wave structures in different constituents show different amplitudes and phase angles. We use a simple linearized wave perturbation theory to explain the observations, emphasizing their role as a useful diagnostic of the basic wave parameters. For the T39 flyby, the datamodel comparison constrains typical wavelength to be ~150-500 km, typical wave period from the Brunt-Väisälä period of ~62 min up to ~6 h. Our calculations also illustrate that wave-induced diffusion is important for CH4 and H2. © 2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874928720&doi=10.1029%2f2012GL054621&partnerID=40&md5=13c6a6b0bc78cc81ac9ae0cac9c63a7f
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6689
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| Appears in Collections: | 气候减缓与适应
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作者单位: | School of Astronomy and Space Sciences, Nanjing University, Nanjing 210018, China
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| Recommended Citation: | |
Cui J.,Lian Y.,Müller-Wodarg I.C.F.. Compositional effects in Titan's thermospheric gravity waves[J]. Geophysical Research Letters,2013-01-01,40(1).
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