| DOI: | 10.1016/j.epsl.2018.07.006
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| Scopus记录号: | 2-s2.0-85050152344
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| 论文题名: | Hydrogen and helium ingassing during terrestrial planet accretion |
| 作者: | Olson P.; Sharp Z.D.
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| 刊名: | Earth and Planetary Science Letters
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| ISSN: | 0012821X
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| 出版年: | 2018
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| 卷: | 498 | | 起始页码: | 418
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| 结束页码: | 426
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| 语种: | 英语
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| 英文关键词: | Earth accretion
; gas transfer velocity
; helium ingassing
; hydrogen ingassing
; magma oceans
; nebular atmosphere
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| Scopus关键词: | Boundary layers
; Gravitation
; Helium
; Hydrogen
; Oceanography
; Solar power generation
; Boundary layer models
; Earth's accretion
; Gas transfer
; Magma ocean
; Nebular atmospheres
; Planetary interiors
; Surface pressures
; Terrestrial planets
; Earth atmosphere
; boundary layer
; helium
; hydrogen
; magma
; Mars
; planetary atmosphere
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| 英文摘要: | The amount of atmospheric gas absorbed into a planetary interior during formation depends on the temperature, pressure, composition, and dynamics of its atmosphere, along with the planet mass, its composition, rate of accretion, and the average age of its surface. We develop a boundary layer model for terrestrial planet ingassing during accretion that quantifies the amounts of hydrogen and helium dissolved into a global magma ocean from a hot, gravitationally captured nebular atmosphere in the first few million years of solar system history. Assuming that most of Earth's accretion occurred within the lifetime of its nebular atmosphere, one or more ocean masses of ingassed hydrogen are predicted if the surface pressure is high and the magma surface is young. In addition, Earth would have acquired hundreds of petagrams of helium-3 from the same nebular atmosphere. Our model predicts negligible hydrogen ingassing from a gravitationally captured nebular atmosphere on Mars, but shows that vast amounts of hydrogen ingassing – tens of ocean masses – are possible during the accretion of Super-Earth-sized terrestrial planets. © 2018 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/109736
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| Appears in Collections: | 影响、适应和脆弱性
气候变化事实与影响
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作者单位: | Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, United States
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| Recommended Citation: | |
Olson P.,Sharp Z.D.. Hydrogen and helium ingassing during terrestrial planet accretion[J]. Earth and Planetary Science Letters,2018-01-01,498
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