DOI: 10.1002/2016GL070694
论文题名: Formation of the Sputnik Planum basin and the thickness of Pluto's subsurface ocean
作者: Johnson B.C. ; Bowling T.J. ; Trowbridge A.J. ; Freed A.M.
刊名: Geophysical Research Letters
ISSN: 0094-8543
EISSN: 1944-8274
出版年: 2016
卷: 43, 期: 19 起始页码: 10068
结束页码: 10077
语种: 英语
英文关键词: crater
; impact
; ocean
; Pluto
Scopus关键词: Gravitation
; Crater
; Gravity anomalies
; Impact
; Ocean
; Pluto
; Positive mass
; Sub-surface ocean
; Thermal evolution
; Oceanography
英文摘要: We simulate the formation of the large elliptical impact basin associated with Pluto's Sputnik Planum (SP; informal name). The location of SP suggests that it represents a large positive mass anomaly. To find the conditions necessary for SP to have a positive mass anomaly, we consider impacts into targets with a range of thermal states and ocean thicknesses. Assuming the basin evolves to its current-day configuration, we calculate the mass and gravity anomalies associated with SP. We find that SP can only achieve a large positive mass anomaly if Pluto has a more than 100 km thick salty ocean. This conclusion may help us better understand the composition and thermal evolution of Pluto. Furthermore, our work supports the hypothesis that SP basin has an impact origin. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991017394&doi=10.1002%2f2016GL070694&partnerID=40&md5=fc90ffb203fc9b55ff133c8f8d907ece
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9506
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth, Environmental and Planetary Sciences, Brown University, Providence, RI, United States
Recommended Citation:
Johnson B.C.,Bowling T.J.,Trowbridge A.J.,et al. Formation of the Sputnik Planum basin and the thickness of Pluto's subsurface ocean[J]. Geophysical Research Letters,2016-01-01,43(19).