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DOI | 10.1029/2018GL081339 |
Natural Analogue Constraints on Europa's Non-ice Surface Material | |
Fox-Powell, Mark G.1; Osinski, Gordon R.2; Applin, Daniel3; Stromberg, Jessica M.3,4; Gazquez, Fernando1,5; Cloutis, Ed3; Allender, Elyse1; Cousins, Claire R.1 | |
2019-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:11页码:5759-5767 |
文章类型 | Article |
语种 | 英语 |
国家 | Scotland; Canada; Australia; Spain |
英文摘要 | Non-icy material on the surface of Jupiter's moon Europa is hypothesized to have originated from its subsurface ocean and thus provide a record of ocean composition and habitability. The nature of this material is debated, but observations suggest that it comprises hydrated sulfate and chloride salts. Analogue spectroscopic studies have previously focused on single-phase salts under controlled laboratory conditions. We investigated natural salts from perennially cold (<0 degrees C) hypersaline springs and characterized their reflectance properties at 100, 253, and 293 K. Despite similar major ion chemistry, these springs form mineralogically diverse deposits, which when measured at 100 K closely match reflectance spectra from Europa. In the most sulfate-rich samples, we find that spectral features predicted from laboratory salts are obscured. Our data are consistent with sulfate-dominated europan non-icy material and further show that the emplacement of endogenic sulfates on Europa's surface would not preclude a chloride-dominated ocean. |
英文关键词 | Europa planetary analogues near-infrared reflectance spectroscopy brines Arctic salts |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477616200015 |
WOS关键词 | AXEL-HEIBERG ISLAND ; EXPEDITION FJORD ; COLD SPRINGS ; OCEAN ; SALTS ; MARS ; TEMPERATURE ; WATER ; EARTH |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184079 |
专题 | 气候变化 |
作者单位 | 1.Univ St Andrews, Sch Earth & Environm Sci, Ctr Exoplanet Sci, St Andrews, Fife, Scotland; 2.Univ Western Ontario, Dept Earth Sci, Ctr Planetary Sci & Explorat, London, ON, Canada; 3.Univ Winnipeg, Dept Geog, Winnipeg, MB, Canada; 4.CSIRO Mineral Resources, Perth, WA, Australia; 5.Univ Almeria, Dept Geol & Biol, Almeria, Spain |
推荐引用方式 GB/T 7714 | Fox-Powell, Mark G.,Osinski, Gordon R.,Applin, Daniel,et al. Natural Analogue Constraints on Europa's Non-ice Surface Material[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(11):5759-5767. |
APA | Fox-Powell, Mark G..,Osinski, Gordon R..,Applin, Daniel.,Stromberg, Jessica M..,Gazquez, Fernando.,...&Cousins, Claire R..(2019).Natural Analogue Constraints on Europa's Non-ice Surface Material.GEOPHYSICAL RESEARCH LETTERS,46(11),5759-5767. |
MLA | Fox-Powell, Mark G.,et al."Natural Analogue Constraints on Europa's Non-ice Surface Material".GEOPHYSICAL RESEARCH LETTERS 46.11(2019):5759-5767. |
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