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  4. 中国科学院地球与行星物理重点实验室
On the structure of the Enceladus plume

文献类型：期刊论文

作者Fu, Menghao1,2,3; Gu, Hao4; Cui, Jun4,5,6; Xiao, Zhiyong4,6; He, Fei1,2,3; Wei, Yong1,2,3; Ren, Zhipeng1,2,3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2021-07-01
卷号504期号:4页码:6216-6222
关键词planets and satellites: atmospheres planets and satellites: individual: Enceladus
ISSN号0035-8711
DOI10.1093/mnras/stab1265
英文摘要The detection of a water-rich plume erupting from 'tiger stripes' near the Enceladus south polar region is an important discovery of geologically active satellites within the Solar system. In this work, we apply an analytical approach to model the plume structure, using as a diagnostic the CO2 distribution extracted from the Cassini Ion and Neutral Mass Spectrometer measurements made during the E14, E17, and E18 flybys. Special focus is placed on the modelling of the spike-like structures by including only sources with substantial contributions to the plume densities. Such a procedure reduces greatly the model complexity and helps to better constrain the source parameters. Both the model source rate and Mach number are found to vary considerably among different sources during the same flyby and also among different flybys for the same source, revealing a complicated spatio-temporal variability in the plume structure. Our analysis suggests a total escape rate of (1.0-7.1) x 10(26) s(-1) for CO2 and (2.4-6.6) x 10(28) s(-1) for H2O, in broad agreement with previous estimates. Of particular interest is our identification of a tentative correlation between the Mach number and thermal brightness, of which the latter is a tracer of the geological activity of the emission source. Such a relation should be able to provide more insights into the nature of geyser emission along the 'tiger stripes'.
WOS关键词NEUTRAL MASS-SPECTROMETER ; CASSINI ION ; TIDAL STRESSES ; ATMOSPHERE ; ERUPTIONS ; GEYSERS ; SATURN
资助项目B-type Strategic Priority Program - Chinese Academy of Sciences (CAS)[XDB41000000] ; Key Research Program - Institute of Geology & Geophysics, CAS[IGGCAS-201904] ; National Natural Science Foundation of China[42020301] ; National Natural Science Foundation of China[41525015] ; National Natural Science Foundation of China[41525016] ; National Natural Science Foundation of China[41774186] ; National Natural Science Foundation of China[41874179] ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies[D020105]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000661537200107
出版者OXFORD UNIV PRESS
资助机构B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; Key Research Program - Institute of Geology & Geophysics, CAS ; Key Research Program - Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; Key Research Program - Institute of Geology & Geophysics, CAS ; Key Research Program - Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; Key Research Program - Institute of Geology & Geophysics, CAS ; Key Research Program - Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; B-type Strategic Priority Program - Chinese Academy of Sciences (CAS) ; Key Research Program - Institute of Geology & Geophysics, CAS ; Key Research Program - Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies ; China's National Space Administration through the Pre-research Project on Civil Aerospace Technologies
源URL[http://ir.iggcas.ac.cn/handle/132A11/105052]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Gu, Hao
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Sun Yat Sen Univ, Sch Atmospher Sci, Planetary Environm & Astrobiol Res Lab PEARL, Zhuhai 519082, Guangdong, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ, Key Lab Lunar & Deep Space Explorat, Beijing 100012, Peoples R China
6.Chinese Acad Sci, Ctr Excellence Comparat Planetol, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Fu, Menghao,Gu, Hao,Cui, Jun,et al. On the structure of the Enceladus plume[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,504(4):6216-6222.
APA Fu, Menghao.,Gu, Hao.,Cui, Jun.,Xiao, Zhiyong.,He, Fei.,...&Ren, Zhipeng.(2021).On the structure of the Enceladus plume.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,504(4),6216-6222.
MLA Fu, Menghao,et al."On the structure of the Enceladus plume".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 504.4(2021):6216-6222.

入库方式： OAI收割

来源：地质与地球物理研究所

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