globalchange  > 科学计划与规划
DOI: 10.1002/2015GL065306
论文题名:
On the escape of CH4 from Pluto's atmosphere
作者: Koskinen T.T.; Erwin J.T.; Yelle R.V.
刊名: Geophysical Research Letters
ISSN: 0094-9149
EISSN: 1944-8880
出版年: 2015
卷: 42, 期:17
起始页码: 7200
结束页码: 7205
语种: 英语
英文关键词: aeronomy ; Pluto and satellites
Scopus关键词: Extrasolar planets ; Aeronomy ; Dominant species ; Escape rate ; Exobase ; Mixing ratios ; Multi-species ; Satellites ; aerodynamics ; exobiology ; methane ; mixing ratio ; planetary evolution ; Pluto
英文摘要: We adapted a multispecies escape model, developed for close-in extrasolar planets, to calculate the escape rates of CH4 and N2 from Pluto. In the absence of escape, CH4 should overtake N2 as the dominant species below the exobase. The CH4 profile depends strongly on the escape rate, however, and the typical escape rates predicted for Pluto lead to a nearly constant mixing ratio of less than 1% below the exobase. In this case the CH4 escape rate is only 5-10% of the N2 escape rate. Observations of the CH4 profile by the New Horizons/ALICE spectrograph can constrain the CH4 escape rate and provide a unique test for escape models. ©2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84943362194&doi=10.1002%2f2015GL065306&partnerID=40&md5=70ece8553b2532e97b0bdcde1735aa5d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8765
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, United States

Recommended Citation:
Koskinen T.T.,Erwin J.T.,Yelle R.V.. On the escape of CH4 from Pluto's atmosphere[J]. Geophysical Research Letters,2015-01-01,42(17).
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