globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068547
论文题名:
Geophysical controls of chemical disequilibria in Europa
作者: Vance S.D.; Hand K.P.; Pappalardo R.T.
刊名: Geophysical Research Letters
ISSN: 0094-9674
EISSN: 1944-9405
出版年: 2016
卷: 43, 期:10
起始页码: 4871
结束页码: 4879
语种: 英语
英文关键词: Europa ; habitability ; hydrothermal ; life ; microfracture ; serpentinization
Scopus关键词: Oceanography ; Orbits ; Oxidants ; Silicate minerals ; Temperature ; Volcanoes ; Europa ; Habitability ; Hydrothermal ; Life ; Micro-fracture ; Serpentinization ; Moon
英文摘要: The ocean in Jupiter's moon Europa may have redox balance similar to Earth's. On Earth, low-temperature hydration of crustal olivine produces substantial hydrogen, comparable to any potential flux from volcanic activity. Here we compare hydrogen and oxygen production rates of the Earth system with fluxes to Europa's ocean. Even without volcanic hydrothermal activity, water-rock alteration in Europa causes hydrogen fluxes 10 times smaller than Earth's. Europa's ocean may have become reducing for a brief epoch, for example, after a thermal-orbital resonance ∼2 Gyr after accretion. Estimated oxidant flux to Europa's ocean is comparable to estimated hydrogen fluxes. Europa's ice delivers oxidants to its ocean at the upper end of these estimates if its ice is geologically active, as evidence of geologic activity and subduction implies. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971283749&doi=10.1002%2f2016GL068547&partnerID=40&md5=c77dedc86e463ec3bd3f4c2102ebdf23
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10637
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: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States

Recommended Citation:
Vance S.D.,Hand K.P.,Pappalardo R.T.. Geophysical controls of chemical disequilibria in Europa[J]. Geophysical Research Letters,2016-01-01,43(10).
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