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The escape mechanisms of the proto-atmosphere on terrestrial planets: "boil-off" escape, hydrodynamic escape and impact erosion
Wang Ziqi; Zhou You; Liu Yun
2022
Source PublicationActa Geochimica
Volume41Issue:4Pages:592–606
Abstract

Atmospheric escape is an essential process that affects the evolution of the proto-atmosphere. The atmospheric escape of early terrestrial planets was extremely rapid compared with the current scenarios, and the main atmospheric escape modes were also quite different. During the dissipation of the nebula disk, the primordial atmosphere experienced a brief but violent "boiling" escape, in which most of the primordial atmosphere was lost. After the nebula disk dissipates, hydrodynamic escape and impact erosion are the two most important mass-loss mechanisms for the proto-atmosphere. Hydrodynamic escape is a rapid atmospheric escape process caused by strong solar radiation, while impact erosion refers to the process in which small-large or giant impacts erode the proto-atmosphere. In the early solar system, there were other escape mechanisms, such as non-thermodynamic escape and Jeans escape, but it is generally believed that these mechanisms have relatively little impact. Here we systematically introduce the above-mentioned atmospheric escape mechanisms and then make some suggestions for the existing problems and future research for atmospheric escape models.

KeywordProto-Atmosphere primordial Atmosphere ‘‘boil-off’’ hydrodynamic Escape Impact Erosion
DOI10.1007/s11631-021-00515-w
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Indexed ByEI
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/13484
Collection矿床地球化学国家重点实验室
Affiliation1.State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
2.International Research Center for Planetary Science, College of Earth Sciences, Chengdu University of Technology, Chengdu, 610059, China
3.CAS Center for Excellence in Comparative Planetology, Hefei, 230026, China
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GB/T 7714
Wang Ziqi,Zhou You,Liu Yun. The escape mechanisms of the proto-atmosphere on terrestrial planets: "boil-off" escape, hydrodynamic escape and impact erosion[J]. Acta Geochimica,2022,41(4):592–606.
APA Wang Ziqi,Zhou You,&Liu Yun.(2022).The escape mechanisms of the proto-atmosphere on terrestrial planets: "boil-off" escape, hydrodynamic escape and impact erosion.Acta Geochimica,41(4),592–606.
MLA Wang Ziqi,et al."The escape mechanisms of the proto-atmosphere on terrestrial planets: "boil-off" escape, hydrodynamic escape and impact erosion".Acta Geochimica 41.4(2022):592–606.
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