| DOI: | 10.1002/2014GL063013
|
| 论文题名: | Possible evidence for a methane source in Enceladus' ocean |
| 作者: | Bouquet A.; Mousis O.; Waite J.H.; Picaud S.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8888
|
| EISSN: | 1944-8619
|
| 出版年: | 2015
|
| 卷: | 42, 期:5 | | 起始页码: | 1334
|
| 结束页码: | 1339
|
| 语种: | 英语
|
| 英文关键词: | Clathrate
; Enceladus
; Methane
|
| Scopus关键词: | Methane
; Trapped ions
; Clathrate
; Clathrate formation
; Enceladus
; Hydrothermal reaction
; Ion and neutral mass spectrometers
; South polar region
; Statistical thermodynamic modeling
; Subglacial lakes
; Oceanography
; clathrate
; hot spot
; mantle plume
; mass spectrometry
; methane
; thermodynamics
|
| 英文摘要: | The internal ocean of Enceladus can be expected to present conditions favorable to the trapping of volatiles in clathrates. This process could influence the eventual composition of the ocean and therefore of the plumes emitted by the south polar region. Here we used a statistical thermodynamic model to assess which species detected in the plumes by the Cassini-Ion and Neutral Mass Spectrometer experiment are trapped in clathrates. We treated Enceladus' internal ocean as a terrestrial subglacial lake with a mixture of dissolved volatiles indicated by plume gas measurements. We find that the conditions for clathrate formation are met in this ocean, except above 20 km or in hypothetical hot spots. The formation of multiple guest clathrates depletes methane below plume levels, suggesting that clathrates eventually dissociate (releasing methane) in the fissure that connects the ocean to the surface or that another mechanism (such as hydrothermal reactions) is compensating by adding methane into the ocean. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925862439&doi=10.1002%2f2014GL063013&partnerID=40&md5=04fb20cab669eba944a3e57fe33fafc4
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8504
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX, United States
|
| Recommended Citation: | |
Bouquet A.,Mousis O.,Waite J.H.,et al. Possible evidence for a methane source in Enceladus' ocean[J]. Geophysical Research Letters,2015-01-01,42(5).
|
|
|