Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NGEO2866 |
A multiple-impact origin for the Moon | |
Rufu, Raluca1; Aharonson, Oded1; Perets, Hagai B.2 | |
2017-02-01 | |
发表期刊 | NATURE GEOSCIENCE
![]() |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | The hypothesis of lunar origin by a single giant impact can explain some aspects of the Earth-Moon system. However, it is difficult to reconcile giant-impact models with the compositional similarity of the Earth and Moon without violating angular momentum constraints. Furthermore, successful giant-impact scenarios require very specific conditions such that they have a low probability of occurring. Here we present numerical simulations suggesting that the Moon could instead be the product of a succession of a variety of smaller collisions. In this scenario, each collision forms a debris disk around the proto-Earth that then accretes to form a moonlet. The moonlets tidally advance outward, and may coalesce to form the Moon. We find that sub-lunar moonlets are a common result of impacts expected onto the proto-Earth in the early Solar System and find that the planetary rotation is limited by impact angular momentum drain. We conclude that, assuming efficient merger of moonlets, a multiple-impact scenario can account for the formation of the Earth-Moon system with its present properties. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394121800010 |
WOS关键词 | FAST-SPINNING EARTH ; GIANT IMPACT ; FORMING IMPACT ; TERRESTRIAL PLANETS ; ISOTOPIC EVIDENCE ; LUNAR ROCKS ; MANTLE ; ACCRETION ; DIFFERENTIATION ; SIMULATIONS |
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/35108 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Weizmann Inst Sci, Dept Earth & Planetary Sci, IL-76100 Rehovot, Israel; 2.Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel |
推荐引用方式 GB/T 7714 | Rufu, Raluca,Aharonson, Oded,Perets, Hagai B.. A multiple-impact origin for the Moon[J]. NATURE GEOSCIENCE,2017,10(2). |
APA | Rufu, Raluca,Aharonson, Oded,&Perets, Hagai B..(2017).A multiple-impact origin for the Moon.NATURE GEOSCIENCE,10(2). |
MLA | Rufu, Raluca,et al."A multiple-impact origin for the Moon".NATURE GEOSCIENCE 10.2(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论