Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NGEO2916 |
An ongoing satellite-ring cycle of Mars and the origins of Phobos and Deimos | |
Hesselbrock, Andrew J.1; Minton, David A.2 | |
2017-04-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The Martian moons Phobos and Deimos may have accreted from a ring of impact debris, but explaining their origin from a single giant impact has proven difficult. One clue may lie in the orbit of Phobos that is slowly decaying as the satellite undergoes tidal interactions with Mars. In about 70 million years, Phobos is predicted to reach the location of tidal breakup and break apart to form a new ring around the planet. Here we use numerical simulations to suggest that the resulting ring will viscously spread to eventually deposit about 80% of debris onto Mars; the remaining 20% of debris will accrete into a new generation of satellites. Furthermore, we propose that this process has occurred repeatedly throughout Martian history. In our simulations, beginning with a large satellite formed after a giant impact with early Mars, we find that between three and seven ring-satellite cycles over the past 4.3 billion years can explain Phobos and Deimos as they are observed today. Such a scenario implies the deposition of significant ring material onto Mars during each cycle. We hypothesize that some anomalous sedimentary deposits observed on Mars may be linked to these periodic episodes of ring deposition. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398162800012 |
WOS关键词 | HEMISPHERIC DICHOTOMY ; SYSTEM ; IMPACT ; DISK ; ACCRETION ; EVOLUTION ; DENSITY ; MOONS |
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/34695 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Purdue Univ, Dept Phys & Astron, 525 Northwestern Ave, W Lafayette, IN 47907 USA; 2.Purdue Univ, Dept Earth Atmospher & Planetary Sci, 550 Stadium Mall Dr, W Lafayette, IN 47907 USA |
推荐引用方式 GB/T 7714 | Hesselbrock, Andrew J.,Minton, David A.. An ongoing satellite-ring cycle of Mars and the origins of Phobos and Deimos[J]. NATURE GEOSCIENCE,2017,10(4). |
APA | Hesselbrock, Andrew J.,&Minton, David A..(2017).An ongoing satellite-ring cycle of Mars and the origins of Phobos and Deimos.NATURE GEOSCIENCE,10(4). |
MLA | Hesselbrock, Andrew J.,et al."An ongoing satellite-ring cycle of Mars and the origins of Phobos and Deimos".NATURE GEOSCIENCE 10.4(2017). |
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